Very bad battery performance! - Galaxy Tab 7.7 General

Hi all! I just get my galaxy tab 7.7 wifi only and I am very disapoited with the battery. It lost 1% each 4 minutes with just normal surfing ( screen brighness 30%) . By ipad 2 I lost 1% each 10 minutes and the screen is biger, brighter.!!! Any suggestion?
Ps: im stanby is ok. 2% for 10 hours.
Sent from my GT-P6810

Perhaps some background process? Try factory reset
Sent from my GT-P6800 using Tapatalk

just found this out a couple of minutes ago if you are using a search engine use bgoog.com aka black google it uses a black background so you can minimize use of the amoled screen and reduce battery consumption hope that helps you
black baground webpages tend to use less power than a white background
as for me battery life is better overall from my old galaxy tab p1000

Yep, I have a lot of black background applications as well and battery life is superb compared to my 6-month-old p1000, just be sure to properly cycle your battery from time to time to minimize battery degrade

My experience is that I get about 8.5 to 9 hours of screen time on a single charge with wifi turned on all the time. That's about one percent loss every five minutes.
I had heard that the iPad is rated as a ten hour battery but it seems that you have been very lucky and got a unit giving you nearly 17 hours of screen time. That's incredible and anything is going to seem like a disappointment after that.
If your unit is new you may find the battery life improves over time a little bit but I wouldn't expect much more than nine hours with wifi on all the time. The adverts claim ten hours and one review site managed twelve but I don't know if that is just looping a movie or if wifi was on at the same time.
Anyway, 8 hours is enough for me
Sent from my GT-P6800 using XDA App

Thank you all. I will try a factory reset then. My battery status now is 65% with 2hours 28 min screen on with only surfing web :-(
Anyone has factory test service running in background?
Sent from my GT-P6810

seVIIen said:
Thank you all. I will try a factory reset then. My battery status now is 65% with 2hours 28 min screen on with only surfing web :-(
Anyone has factory test service running in background?
Sent from my GT-P6810
Click to expand...
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i think you may have an app thats running in the backfround that doesnt exit even when not in use had the same problem before with my old p1000 i thought i had a lemon unit but the culprit was the a certain app forgot the name it was about a year ago you may want to use the samsung task manager and see if any app is running in the background or use a task manager on the market

and just to add, do turn off the background data on the settings, it's another power hog

I find it hard to believe that the iPad 2 can go for 17 hours of usage. Engadget's battery test says that their 7.7 lasted about 12 hours, 1.5 hours more than their iPad 2 (looping video, wifi on, screen at 50%, I seem to recall).
Also see settings> about device> battery use to see what's eating the charge. Normally, the lion's share goes to the screen. But games can use significant amount of charge too.
I've been able to about 10 hours of continuous usage (light browsing, email, xda, kindle, pdf reading on either repligo or mantano).
Sent from my GT-P6800 using xda premium

That's what i think too .
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Theory said:
I find it hard to believe that the iPad 2 can go for 17 hours of usage. Engadget's battery test says that their 7.7 lasted about 12 hours, 1.5 hours more than their iPad 2 (looping video, wifi on, screen at 50%, I seem to recall).
Also see settings> about device> battery use to see what's eating the charge. Normally, the lion's share goes to the screen. But games can use significant amount of charge too.
I've been able to about 10 hours of continuous usage (light browsing, email, xda, kindle, pdf reading on either repligo or mantano).
Sent from my GT-P6800 using xda premium
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For video playback the Tab7.7 will have a longer battery life since it is using GPU decoding as compared to the Ipad2's SW only. But when it comes to surfing and everything else, generally for anything else apple devices can outlast samsung devices or andriod.

According to battery widget pro estimates, if I stick to reading on the kindle app, as I have been doing for the last couple of hours, I will be able to last another 18+ hours. Wifi is on, screen about 15%, background auto sync on. (Since it's a longish Neal Stephenson that I'm reading, I'm going to need that much time.)
Incidentally, I found battery widget pro very useful. Have it on each of my Android devices.
Sent from my GT-P6800 using xda premium

Aaawww, I feel so bummed to post this, cause I am otherwise absolutely in love with my galaxy tab 7.7, but I feel a bit iffy about the battery life aswell. I switched to galaxy tab from Asus Transformer TF101 and I actually feel like the battery on my previous tablet lasted waaaaaay more, even with the wifi switched on permanently. On my Galaxy Tab 7.7 3g I can easily lose 20% of battery power during a half an hour of browsing the internet on low brightness, with wifi, gps, bluetooth and background sync switched off...that is hardly the "phenomenal battery performance" mentioned in all those reviews. I use ADW launcher, not so many widgets, I dont even play music, games or video and still the battery will not last through the day at all...I mean..I only would use it for reading an ebook, browsing the web and facebooking 1 hour on a bus in a morning and another hour in the evening....but no chance...the battery wont last that long. It would exhaust the first 40% on my way to work, and come down to 30% during the day (when used very rarely). I can easily last the whole afternoon with switching the battery saver ON every time I am not using the tablet, but to resort to that, and to switch everything off and lowering the brighteness to miminum just to be able to browse internet for an hour and lose almost 50% of battery power by doing so, feels really desperate. I still dont want to believe I am the unlucky one to get a bad unit with a dogdy battery...what should I do to make sure tis not the case? Is there a test I can run to see for sure if I have the battery which drains the same way as the others or not??? Thanks in advance for any suggestions.

i personally have no battery problem with surfing internet . because i have use customized css in opera mobile, every page become black with white text.
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zoftdev said:
i personally have no battery problem with surfing internet . because i have use customized css in opera mobile, every page become black with white text.
Sent from my GT-P6800 using xda premium
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Ok thanks, but that does not really help..I just wanted to know if there is a way of knowing for sure (e.g. by running a certain test or something) that my battery is officialy flawed compared to the others in these units. All the reviews for this tablet mentioned an exceptional battery life and yet I am loosing almost 10% every 10 minutes of browsing (not playing video or music, so not a heavy use really) on the minimum brightness, with gps, wifi, bluetooth, background sync, vibrations, animations switched off...does not seem ok to me.

a_hadada said:
Ok thanks, but that does not really help..I just wanted to know if there is a way of knowing for sure (e.g. by running a certain test or something) that my battery is officialy flawed compared to the others in these units. All the reviews for this tablet mentioned an exceptional battery life and yet I am loosing almost 10% every 10 minutes of browsing (not playing video or music, so not a heavy use really) on the minimum brightness, with gps, wifi, bluetooth, background sync, vibrations, animations switched off...does not seem ok to me.
Click to expand...
Click to collapse
Install a battery monitoring app (e.g., Battery Monitor Widget Pro) so that you can track/log usage.
No, your numbers don't seem right.

Check what been taking up all the juices in setting-about-battery usage. I had similar problem previously when my exchange push mail was not working correctly and keep connecting to sever. Did a hard reset, everything is back top normal.
Sent from my GT-P6800 using XDA App

I dont have any battery life complaints yet as TBH, i dont really know what to expect from a 7.7 Inch screen with 5100mAH of battery, suffice to say that it out lasts an Ipad2 on anything but web browsing is already good enough for me.

My battery is very good, light years aheadof the Blackberry Suckbook that it replaced. I generally get a full day of heavy use with Wifi and 3g browsing, and two days of "normal" use.
Sent from my GT-P6800 using XDA App

a_hadada said:
Ok thanks, but that does not really help..I just wanted to know if there is a way of knowing for sure (e.g. by running a certain test or something) that my battery is officialy flawed compared to the others in these units. All the reviews for this tablet mentioned an exceptional battery life and yet I am loosing almost 10% every 10 minutes of browsing (not playing video or music, so not a heavy use really) on the minimum brightness, with gps, wifi, bluetooth, background sync, vibrations, animations switched off...does not seem ok to me.
Click to expand...
Click to collapse
if your tab is rooted and you know the system files you may want to install nobloat and remove system apps that you don't use tried it and lowered my actual ram use to 400 to 500+ and keeps my tab snappy be warned make backup before using just to be sure
and another thing always try to clear memory using task manager when your gonna let it standy i found it to use less battery than when many apps is running in the background when on standby hope that helps

Related

Legend battery life

Hi to all!
I'm thinking of buying either the Legend or Desire. There are two things that are important to me. The battery life and storing applications on the memory card. I suppose that the latter will be taken care of by the upcoming update to Froyo (if it ever happens!). How about the battery life? How long does it last on the Legend? Would anyone have any experience with the Desire vs the Legend on this? All comments appreciated!
Thanks in advance!!!
I don't have experience with the Desire but my Legend performs battery wise as expected from a smartphone I guess.
After the last update I discovered for example that leaving Google Reader open in the browser in the background drained power, so I now leave the browser always on the google homepage or kill it altogether when I'm not using it and I've seen an increase in battery life.
Anyhow, I give it a pretty intense use, on a work day I listen to podcasts on it for some hours at least, I connect it to my car bluetooth on the commutes (40 mins average total), read email, etc. And it lasts me the full day without problems, usually ending the day with 30% or more battery left.
It obviously depends on how each one uses their phones, as tricks like the Reader one I mentioned can make a difference.
The Legend seems to have slightly superior battery to me. My legend ends the day at about 30 percent after 2 hours of Bluetooth stereo playback, and plenty of latitude use and web browsing. My partner's new desire ends the day about about the same but without the music playing I do.
I was jealous of the desire when my partner bought it but If I had the choice of legend or desire again, it would be a hairline decision to buy legend again. If Legend had live wallpaper I would choose legend without doubt.
Sent from my HTC Legend using XDA App
My battery life is even better than my old dumbphone. With medium use and pretty stringent management (ie. a task killer, bluetooth and wifi off unless I need them), I can get about five days on a charge.
Sent from my HTC Legend using XDA App
sturk91 said:
My battery life is even better than my old dumbphone. With medium use and pretty stringent management (ie. a task killer, bluetooth and wifi off unless I need them), I can get about five days on a charge.
Sent from my HTC Legend using XDA App
Click to expand...
Click to collapse
Are you sure you are using the original battery ? I have never heard anyone reporting 5 days on any smartphone on even minimal usage. Legend seem to give 1 to 2 days max on minimal usage.
lessirey said:
Are you sure you are using the original battery ? I have never heard anyone reporting 5 days on any smartphone on even minimal usage. Legend seem to give 1 to 2 days max on minimal usage.
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Click to collapse
I have on two occasion to manage get three days but five days? Naah, not with the original battery.
Well if you disable APN the thing can last 5 days, but with net connection active definitely no way.
I can believe he gets 5 days out off this phone. I can get 3 days out of it with very good reception, some hours of browsing and 20 texts a day. Almost no calling and 3G always on AND WITH A GOOD TASK KILLER I always kill almost every app before putting it in standby you just need to know what you can and can't kill.
I can do 3 days with low use (maybe 10min calls and 20sms a day) and APN off most of the time.
With APN on I don't think it will last more than 2 days max
Just to clarify, I do turn off my mobile internet unless I'm using it at that moment, and yes I'm using the stock battery.
Sent from my HTC Legend using XDA App
Sure, if you turn everything off it'll last a few days, but then might as well carry a dumbphone
Hey all,
I've been using Azure 1.0 on my Legend.
In case anyone is wondering what battery life is like on this ROM [I know I wanted to know before I decided to run it...] :
I've just got the best usage for this ROM in terms of battery life, since I started using it [0.5].
I haven't gone for Azure 1.0.1, and have stuck to 1.0 as I didn't have any APN issues...
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Voice calls = 1hr 3m 15s + SMSing
WiFi = 6hr 46m 46s
For the hours that WiFi was not on, Data [H/3G] was always enabled.
Approx 1hr 45min of browsing
Approx 10 emails received and replied to
Battery life was pretty poor when I first installed the ROM.
Then I used SetCPU to help....but it didn't seem to help too much...
Now I am seeing better battery life, like the above.
No idea if this is good/bad for this ROM, but for me, its the best I've seen yet....
...though still probably not as good as I first saw on the stock ROM before the update which messed up the stock SMS app was pushed out...
18 hours ~ 24 hours average. 1 and a half day or so if I'm lucky.
2G network. only switch on 3G when it's needed.
Wi-Fi, gps and bluetooth if needed. If not, it's turned off all the time.
always leave my Trillian (MSN/YM/gTalk) turned on almost all the time (like 75% of the time).
WhatsApp for 24 hours.
Mail fetching every 4 hours.
Twidroyd fetching every 15 minutes.
Urbandictionary widget fetching every hour or so.
15 minutes of call average.
Texting about 10-20 times a day.
And data counter widget running all the time.
Rooted and using a nice clean ROM called "CleanEclair 1.6.2"
Got a good Task Manager too.
It's definitely better than my old iPhone 3g.
BUT, if you are asking "Desire or Legend"
I may choose desire for it's better hardware.
PS: Sorry about my bad english.
Just to echo previous statements about battery life, I too get an easy 24 hours from my UK Legend. It usually has at least 30% charge left when I plug it in at night (10-11pm), this is from about 6am. As I type this as 4.30pm it has 69% left.
I leave data and wifi on all the time but only enable GPS & Bluetooth when needed. The phone connects by wifi at home but is in a marginal 2G location when I'm at work (cheers, Vodafone!) so probably has to work quite hard to keep connected to the network.
Google services and Twitter update constantly, Facebook every hour.
Don't run any task killer apps as I found they made naff all difference.
I do watch how many browser tabs I have open and what's on them thought as I notice that some pages really suck the battery dry.
Navigation is the real killer on the Legend (or any Android I guess); the combination of screen on, GPS enabled and heavy duty data use means it can go flat in as little as 3 hours. A power cable in the car will only supply 500mA, rather than the full 1A that a main scharger will, so it only really slows down the drain on the battery.
Other than that I expect the phone to fit my life, not the other way round. The effort that some expend to micro-manage their battery life really baffles me!
I get terrible battery life...
Typically 7-8hrs , now I use it for work but today I did 30ish minutes of calls, + maybe 1hr's worth of reading emails, sending data etc etc etc.
From looking at the "battery" part of the settings/about screen I can see that Display seams to be the thing EATING the battery..
is this normal?? I do use the power widget and put the screen down as low as it goes when I can however im really shocked at the power usage..
Ive tried using a task killer (advanced task killer) and JuiceDefender and neither make much difference...
any comments?? am I being realistic? I used to have a blackberry 8900 and it would easily last me a whole day , doing the same email load, websurfing, syncing etc, might even last 1.5days but I tend to plug the legend in whenever I can....
Is this normal???
Angelo
asantaga said:
From looking at the "battery" part of the settings/about screen I can see that Display seams to be the thing EATING the battery..
is this normal??
Click to expand...
Click to collapse
I have the same issue, display is always the best battery easter even with the bare minimal usage.
Is it normal guys?
lessirey said:
I have the same issue, display is always the best battery easter even with the bare minimal usage.
Is it normal guys?
Click to expand...
Click to collapse
Yup. Try lowering your screen brightness and see the difference. Screen and gps is the most battery-hungary.
Everything depends on how you use your phone. Try to avoid GPS and max screen brightness. And always remember to kill aps with any of the app killers, after you finished with it.
no0neX said:
Everything depends on how you use your phone. Try to avoid GPS and max screen brightness. And always remember to kill aps with any of the app killers, after you finished with it.
Click to expand...
Click to collapse
Good advice. Except on the task killing. Google around why task killing is not healthy for your phone.
my battery doesn't seem to show the correct level...I can charge it overnight on the mains an in the morning it has only got to 38%. Take the battery out and it goes up to 60ish%. Phone will last about a day, but can't seem to get a full charge into it.

The Plays Battery can actually rock!

I know a few people have been moaning about the plays battery but I thought I would post a couple of pictures showing how well mine has been lasting over the weekend, I'm highly impressed as I have been using it quite a lot too.
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That is 36 hours since a last charge and counting with 39% battery left! during this time I have been using the internet, a few apps, the camera and XDA forum app!
The lowest the Play has latest me is about 7 hours but that is playing 3D games non stop, so anything pushing the gpu will drain the battery a LOT faster than shown above.
So yup, the Play has got a FANTASTIC battery
UPDATE: So far it has lasted 40 hours 8 minutes with 18% remaining
Update, 43 hours with 13% left
Damn i'm jealous. My play doesn't last that long. Did you disable some app's? Ans all sync on manual probably
Sent from my R800i using XDA App
I've got about 150 apps on my phone, Trillian constantly running to keep me online with IM protocols, syncing set to automatic, streaming podcasts with bluetooth and playing games from time to time, often with the screen on for long periods of time. I've been averaging 24-35 hours per charge, FAR better than my old Captivate which wouldn't last a day at any point.
Aerox912 said:
Damn i'm jealous. My play doesn't last that long. Did you disable some app's? Ans all sync on manual probably
Sent from my R800i using XDA App
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Click to collapse
Mine is rooted and I removed a few system apps, nothing major though, I have facebook and twitter syncing every 3 hours, email every hour.
My Play finally turned off at 2%, total time - 45 hours, 7 minutes
I have been using a lot this afternoon so did go down faster during the last few hours, highly impressed as my old samsung galaxy s would never last a day without a charge.
Yeah, I think it just depends on how you use it. For me I don't use 3G at all so that already saves, and then on top of that I selectively turn on/off bluetooth and wifi. I can game for like 3 hours straight and still have 75% left. I think the longest I've gone is 24+ hours with heavy periods of gaming throughout. If you constantly use 3g, wifi, bluetooth, and have a gazillion programs running then ur battery life might be way less.
liaoip said:
Yeah, I think it just depends on how you use it. For me I don't use 3G at all so that already saves, and then on top of that I selectively turn on/off bluetooth and wifi. I can game for like 3 hours straight and still have 75% left. I think the longest I've gone is 24+ hours with heavy periods of gaming throughout. If you constantly use 3g, wifi, bluetooth, and have a gazillion programs running then ur battery life might be way less.
Click to expand...
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This is the thing, On the other end of the scale I have only got 7 hours out of it when I was playing games non stop all day but that isn't bad as my old psp would go flat in 3 hours playing non stop.
It definitely depends how you use it but its good to know it can last for almost 48 hours between charges if you want it too!
Hello FK1983, thanks to your post I found the Battery Monitor Widget, which provide more information than the one I had before. I was reading all the post about the xperia play battery because mine was lasting just for half day.
I install this widget and noticed that where it provide the estimate charge use by the phone was showing more than 150mA, this even in standby, while yours was only showing 4mA, base on this I know somethign was running and eating my battery so I restart the phone and now it has been in 2mA while in standby and around 40mA and 60mA while writing msg or checking something else.
Is there any way to know what is eating my battery if I notice the last behavior again? so i can just kill it and not just restart the phone again
Another thing I noticed is that in your picture where you can see the battery information it says "Techno: Li-poly 585/1500mAh" while in my play says "Techno: Li-poly XXX/1200mAh" where XXX is the actual battery charge. Is this indicating that there is something wrong with my battery? I check it just to be sure that it wont be a 1200mAh battery model because of different region market but the battery has written on it 1500mAh. Any help will be appreciate.
Thanks.
Always check to make sure Gtalk isn't running in the background if you're on 3G (make sure your signed out), as it literally destroys my battery in about 6 hours.
And if anyone knows of a precise application that indicates battery usage (outside of the built-in one), I'd love to hear about it!
There's no question that the play has great battery life compared to most smart phones out there. I lost my charger and it lasted 4 days and still wasn't dead when I bought a new one.
any tip?
is a good time in u battery....
eoga said:
Hello FK1983, thanks to your post I found the Battery Monitor Widget, which provide more information than the one I had before. I was reading all the post about the xperia play battery because mine was lasting just for half day.
I install this widget and noticed that where it provide the estimate charge use by the phone was showing more than 150mA, this even in standby, while yours was only showing 4mA, base on this I know somethign was running and eating my battery so I restart the phone and now it has been in 2mA while in standby and around 40mA and 60mA while writing msg or checking something else.
Is there any way to know what is eating my battery if I notice the last behavior again? so i can just kill it and not just restart the phone again
Another thing I noticed is that in your picture where you can see the battery information it says "Techno: Li-poly 585/1500mAh" while in my play says "Techno: Li-poly XXX/1200mAh" where XXX is the actual battery charge. Is this indicating that there is something wrong with my battery? I check it just to be sure that it wont be a 1200mAh battery model because of different region market but the battery has written on it 1500mAh. Any help will be appreciate.
Thanks.
Click to expand...
Click to collapse
The battery mAH settings you can change from 1200 to 1500 in the options, that maybe why some of your stats look different to mine? give it a try.
Regarding running apps, you could keep a close eye on the running processes and see what is running there, or use a task killer or even an "app monitor" that records apps usage.
Folks that report awesome battery life:
Have you applied the 2.3.3 update? I'm still on 2.3.2, and I'm lucky if I get 5 hours of moderate internet browsing before needing to plug in (with about 20% battery left).
Also, in contrast to the OP's picture, my battery widget is consistently reporting between 200 and 300 mA shortly after a reboot. Can't kill any tasks to speak of either. Nothing is running to speak of except homescreen widgets.
Using launcher pro with its built in facebook widget, power control, fancy widget, pandora widget (not playing), winamp widget (not playing), battery monitor widget, google plus widget, and a volume control widget. Running a live wallpaper as well. With all this running, is 300mA a reasonable usage?
I'm on 2.3.3. 5 hours seems awfully short for just web browsing...
I get around 24 hours with 15 hours of Facebook & ebudddy....around 2hours of web browsing and abit of gaming
Sent from my R800i using XDA Premium App
Im on 2.3.3 and i get around 24 to 30 hours facebook and surfing the web for around 2 hours and sending msgs and making some calls. if you are getting 200 or 300 mA i think something is killing your battery. On idle Im getting around 4 and 5 mA sometimes 12-15 mA(I guess something running in the background) and when using the web browser, WIFI on and GPS on im getting around 100-150 mA the most being really bad.
I'm on the R800X. I guess verizon really screwed this phone up.
I rooted my play last night and my battery seems to drain quicker.
I don't know why I havent done anything to phone yet as iv been at work all day. And since I havent replaced all my games yet iv used it alot less today than I normally would but the battery seems to have drained more than usual.
Would a task killer help prolong battery life? I read somewhere that a task manager is not needed with android but im skeptical
Sent from my R800i using XDA App
-josh- said:
I rooted my play last night and my battery seems to drain quicker.
I don't know why I havent done anything to phone yet as iv been at work all day. And since I havent replaced all my games yet iv used it slot less today than I normally would but the battery seems to have drained more than usual.
Would a task killer help prolong battery life? I read somewhere that a task manager is not needed with android but im skeptical
Sent from my R800i using XDA App
Click to expand...
Click to collapse
Android has a build in task killer, having two will only drain battery. try setcpu and remove as much bloatware as you can(need root).
I just updated my play to 2.3.3 and battery life seems worse for me than 2.3.2. I can barely get through a day of light usage (no gaming, and ard 1 hr's worth of web surfing, switched off most of the updating from apps like facebook, email, pulse etc to manual).
I tried battery monitor widget and my Battery health shows up to be 'null' (my friend's htc desire hd shows 'good'). Would any kind soul be able to tell me if there's something wrong with the battery or the software (mine is stock Singapore xperia play firmware 2.3.3).

Perfect Phone except for battery

I got my SGSII on Sunday and I am extremely pleased with it. Its like the phone of my dreams in almost every way. It's responsiveness, its camera, its form factor, its screen, everything about it was great. Until I noticed that the battery was being drained kinda fast. I rooted it within a day and tried every ROM available so far but none of them alleviated my battery issue. I've read and tried every solution on these forums but nothing works.
I lose approximately 10 percent of battery every 30 minutes and have gained a maximum battery battery life of 8 and a half hours. Ive Frozen most of sammy's bloatware and have optimized it as much as i can. i disabled fast dormancy everything.... I just dont know what to do.
Did you try restoring original Samsung firmware, factory reset with full wipe, and then doing initial setup prior to getting on wifi?
Try this, don't config any account besides google, don't install any software and certainly don't freeze any apps. Monitor phone for a few hours and then post screenshots of Battery Use app for us to see.
I get about 15+ hrs worth.of battery.
With heavy exchange (push) email and quite a few apps.
My problem is random reboots especially when playing music.
Sent from my GT-I9100 using XDA Premium App
Wait for some days. Battery need to calibrate and take some charge to be fully operational.
See pic, I got better battery life than my x10....
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Sent from my GT-I9100 using XDA App
Give it some time. Battery life improves quite a bit after some discharge cycles. Do a factory reset and reinstall as some have mentioned above.
And remember some apps can cause the OS to misbehave.
That's the reason I sold mine. Battery life was unacceptable. Other than that, perfect phone!!! Still looking at this forum hoping for solution to battery problem. Would definitely buy the device back then.
kreoXDA said:
Did you try restoring original Samsung firmware, factory reset with full wipe, and then doing initial setup prior to getting on wifi?
Try this, don't config any account besides google, don't install any software and certainly don't freeze any apps. Monitor phone for a few hours and then post screenshots of Battery Use app for us to see.
Click to expand...
Click to collapse
Thanks for the advice first thing in the morning ill flash KE7, which is what my phone came with, and report back with screenshots and after a few hours.
Any smartphone battery need at least a good month before reaching the maximum potential.
Just wait a couple of days and use custom kernel with SetCPU.
My ex-Arc did the same, first day battery droped 7% every hour on idle but after a week battery could last 3 days
if u continue in this topic its very better. 1 topic about battery is more better
http://forum.xda-developers.com/showthread.php?t=1070324
For me, it's simply because i'm battering the phone with internet use, and generally playing around with it constantly all day while at work.
I get a full day, sometimes two now, depending on how I use it.
My old HTC Desire used to need charging twice a day, until I got my SGS 2, now the Desire needs a charge once every 3 or 4 days, due to the fact I am playing with my new toy! lol
I'd say battery life will improve as time goes on and usage of the phone goes from all day, to normal smart phone usage
In all seriousness, the SGS two outlasts my Desire easily, which is good enough for me. I struggle to kill the SGS 2 in a day.
If you are losing 10% per half hour, is that with the screen on? If so, that is fairly normal. I find that 5 hours of screen on time is the most you'd normally get. If its in standby mode (screen off) and you are losing that much per half hour then something is wrong.
Those you of who are getting amazing battery life, would love to see a screenshot with more than 5 hours screen on time - just to see if it is possible. 3 or 4 days means nothing if its in standby 99% of the time
blue265 said:
If you are losing 10% per half hour, is that with the screen on? If so, that is fairly normal. I find that 5 hours of screen on time is the most you'd normally get. If its in standby mode (screen off) and you are losing that much per half hour then something is wrong.
Those you of who are getting amazing battery life, would love to see a screenshot with more than 5 hours screen on time - just to see if it is possible. 3 or 4 days means nothing if its in standby 99% of the time
Click to expand...
Click to collapse
Yep, how you use the phone is huge. Screen brightness and many other factors like installed apps and what they are doing can have a major impact on batt life. IMO battery life is almost impossible to compare except your own in static usage after making changes. Even idle batt life is effected by push email, weather, etc. In my own usage I was getting poor battery life to start with (multiple charges per day) or was I? There I was screwing around with the phone constantly. Loading this, uninstalling that, taking browsers for test drives, trying launchers, flashing roms, seeing how different games played, showing other people the phone, and so on. The excitement wore off and I got to normal usage (for me) which since I unplugged 17 hours ago is 18 texts, 7 calls all of which were short, and assorted stuff like doing a search, a little web browsing following the search and so on. I'm at 61% showing on batt and my largest user was screen with 59% and then OS with 11%. So this is pretty obvious, cant make it through the day hammering the phone but no problems with what I think most people would consider light usage. Where I'm going is that I think some people may not realize how much they are using their phones in their wahoo new phone frenzy.
blue265 said:
If you are losing 10% per half hour, is that with the screen on? If so, that is fairly normal. I find that 5 hours of screen on time is the most you'd normally get. If its in standby mode (screen off) and you are losing that much per half hour then something is wrong.
Those you of who are getting amazing battery life, would love to see a screenshot with more than 5 hours screen on time - just to see if it is possible. 3 or 4 days means nothing if its in standby 99% of the time
Click to expand...
Click to collapse
Quoted for truth! With normal daily usage about 12-14 hours off the charger you'll see 5 hours of display at the most. GSMArena has done some tests and in airplane mode playing a video on loop on 50% brightness can last a bit over 8 hours. Once you add in having to maintain a cell signal, wifi, push email, idling for another couple hours, it reduces your possible screen time in favor for those other activities.
The best ways to conserve battery are to make sure you don't have rogue apps that are keeping your phone awake when it should be sleeping. Check your battery graph and actually CLICK on the graph to expand it to check if your "awake" bars line up with your "screen on" bars. If they don't, something is wrong and you have to find out what's causing it to stay awake. If you've been browsing (white) websites on wifi for 5 hours and complain when the phone says low battery... tough. You're using the display, wifi, maintaining a cell signal, as well as viewing sites that strain the SAMOLED display the most - white backgrounds.
Based on my experience, my battery life is actually quite good. After 4 hours of idling and only about 20m of display on (auto brightness) I'm still at 91%. After a day's use with about 1h of screen time and 14 hours off the charger (about my avg workday usage) I end up around 65-75% which I consider not too bad and can definitely go 2 days on my average usage. Basically minimizing the battery draw when the screen is off is key since when the screen is on, nothing can stop it from draining the battery.
http://www.gsmarena.com/htc_sensation_vs_galaxy_sii_vs_optimus_2x-review-608p7.php
blue265 said:
Those you of who are getting amazing battery life, would love to see a screenshot with more than 5 hours screen on time - just to see if it is possible. 3 or 4 days means nothing if its in standby 99% of the time
Click to expand...
Click to collapse
Mine,
From 100% to Full drain (Switch Off). Total usage 1d 19h. At 20% Brightness. On XWKE8. More than 5 or 5½ hours is NOT possible, whatever you do. It's not that I am impressed with it, 5 hours isn't enough, 7-8 hours would be good though
Regards.
Well i left my phone idle for approx. 5hrs and im dwn to 63% but now im noticing a problem that i havent noticed before... my Android OS is now taking up 38% with which is more than Display which only took 21% and the phone was constantly waking up. I have no apps runnin in the background nothing else out of the ordinary.
Anarchist310000 said:
Well i left my phone idle for approx. 5hrs and im dwn to 63% but now im noticing a problem that i havent noticed before... my Android OS is now taking up 38% with which is more than Display which only took 21% and the phone was constantly waking up. I have no apps runnin in the background nothing else out of the ordinary.
Click to expand...
Click to collapse
You must have SOMETHING that is eating up the CPU. If you are out of guesses, do a factory reset with data wipe, restore original firmware (if you flashed a custom rom), do another factory reset, configure only gmail, and then monitor the battery usage. It would be losing at most 2% an hour in standby. For me it was 1% every 2 hours (with absolutely nothing running except google) when I tested. I the slowly added my apps making sure I do not install crap and do not configure osmething to always do some **** I do not want.
I don't understand these "battery life sucks" threads.
I have an Unlocked SG2 with stock ROM. It is not rooted, I have not frozen any apps. I have four exchange accounts syncing on push, social networks up and running and widgets on all of my screens. I text and check e-mail frequently throughout the day and I use the camera here and there.
I always get at least 15 hours out of my battery, if not more. For comparison, I was using an iPhone 4 under the same conditions (with the same accounts syncing) minus any widgets or automatic social updates and I was getting roughly the same battery life.
No, this phone won't last you a week with heavy use, but you should easily get a day out of it and I rarely find myself in a situation when I can't charge it overnight. This phone is on par with all of the best battery life smartphones out there, as far as I'm concerned. Those of you getting horrible battery life should probably look into an exchange or maybe an app you recently downloaded. The only time I got really bad battery life was when I ran a live wallpaper that was pegging my CPU.
greyhulk said:
I don't understand these "battery life sucks" threads.
Click to expand...
Click to collapse
Well you are a lucky man then. But I/We do understand.
greyhulk said:
I have an Unlocked SG2 with stock ROM. It is not rooted, I have not frozen any apps. I have four exchange accounts syncing on push, social networks up and running and widgets on all of my screens. I text and check e-mail frequently throughout the day and I use the camera here and there.
Click to expand...
Click to collapse
It's NOT about Frequent email checking or here and there photo shooting, as you can see we are talking about numbers here.
greyhulk said:
I always get at least 15 hours out of my battery, if not more. For comparison, I was using an iPhone 4 under the same conditions (with the same accounts syncing) minus any widgets or automatic social updates and I was getting roughly the same battery life.
Click to expand...
Click to collapse
If you are happy with 15 hours back up with the stuffs you mentioned you do then I've nothing to say. And AFAIK, iPhone 4 has much better battery back up than GS II, in fact it's the only phone, rather smartphonecool which has the best battery back up atm.
greyhulk said:
No, this phone won't last you a week with heavy use,
Click to expand...
Click to collapse
With Heavy use even a Nokia 1200 will not last a week, so it's outta equation.
Regards.
Anarchist310000 said:
Well i left my phone idle for approx. 5hrs and im dwn to 63% but now im noticing a problem that i havent noticed before... my Android OS is now taking up 38% with which is more than Display which only took 21% and the phone was constantly waking up. I have no apps runnin in the background nothing else out of the ordinary.
Click to expand...
Click to collapse
Before going to sleep do these things,
A- Check if 'Auto Sync' is running, Disable it if it was. Same goes for Background Data, Disable it.
B- Go to Task Manager and see if any Apps are running. Close it if some were.
C- In Task Manager, go to RAM tab, Press Clear Memory, it should close the hidden apps were running. ***DO NOT do this if you have some kind of Scheduler application running, it will NOT work then***
D- Download an app like Auto Task Killer.
E- If possible keep the 'Power Saving Feature' on with your desired settings.
Do these first, if not worked, do a Hard reset. For me, it decreases about 5-6% battery (max) in overnight period of 8-9 hours.
Regards.
ithehappy said:
Well you are a lucky man then. But I/We do understand.
It's NOT about Frequent email checking or here and there photo shooting, as you can see we are talking about numbers here.
If you are happy with 15 hours back up with the stuffs you mentioned you do then I've nothing to say. And AFAIK, iPhone 4 has much better battery back up than GS II, in fact it's the only phone, rather smartphonecool which has the best battery back up atm.
With Heavy use even a Nokia 1200 will not last a week, so it's outta equation.
Regards.
Click to expand...
Click to collapse
I'm not sure what you mean by "battery backup". Are you referring to standby time? Yes, the iphone does better in that department, but that's not typical daily use. Phones are meant to be used, not sit around for days at a time. Iphone can do this because it doesn't truly multitask and no data is syncing. Either you have a faulty device, bad Rom, or your expectations are unrealistic .

Galaxy Note 8 Battery Life

After 2 weeks of using the 3G version of the Note 8 (GT-N5100), I could say a full battery charge gives me at least 7 hours of actual screen time for a 16-hour stretch for the day, using it for light to medium apps and social network sites. I also do drawing using Adobe Photoshop Touch, Autodesk Sketchbook Ink and Sketchbook Pro.
This is my first tablet as I think its compact size and weight is more ideal than the heavier Note 10.1. I simply love digital drawing with the Note 8. I'm coming from a Note II and the bigger screen just gives me more area for line strokes.
7 hours of actual screen time isn't a wow for me as I do my torrent downloads with my Note II with also the same screen time and be able to change to a fresh battery usually in 12 hours. I just find plugging in the Note 8 in the late afternoon to be confident that it really doesn't die on me for an evening in a cafe.
Some 80% of the charge goes to maintaning the TFT screen! Is this normal for TFT screens to guzzle up that much power? I set my brightness to 30% and even set it to power saving mode. Still the screen is the main battery drainer.
Anyway, I set up this thread in the hopes that people can share how to best optimize the battery with proven sound practices.
Sent from my GT-N5100 using XDA Premium HD app
Screens are always the main power drain on these type of devices...even your Note II.
Sent from my GT-N5110 using Tapatalk 2
I have N5100 too. But I just have 5h onscreen and 20h stanby. Wifi and 3G allway on. Set auto brighness. Do you think my battery have problem???
ExploreMN said:
Screens are always the main power drain on these type of devices...even your Note II.
Sent from my GT-N5110 using Tapatalk 2
Click to expand...
Click to collapse
My Note II only takes roughly 30% of battery charge usage. I'm guessing AMOLED is just more efficient than TFT screen.
Sent from my GT-N5100 using XDA Premium HD app
What I noticed... the time shown in battery statistics seems to be wrong.
I was also getting approx. 5 hours on battery according to battery statistics. But this felt wrong for me. So I fully charged my Note 8 -> Usage statistic showed 0 hours. Then I was playing and reading for 2 hours (display always on, no reboots). But statistics where showing something around 1 hour and a few minutes. So don't trust your device.
ranzassel said:
So don't trust your device.
Click to expand...
Click to collapse
Also, don't turn your back on them. They are out to kill us.
ExploreMN said:
Also, don't turn your back on them. They are out to kill us.
Click to expand...
Click to collapse
That got a big laugh out of me! :laugh:
I got my note 8 about two days ago and the battery life was truly horrible but after a couple of charging cycles it seems to be getting better now I get about five to six hours of screen on time
Sent from my GT-N5110 using Tapatalk 2
janjannsen99 said:
I got my note 8 about two days ago and the battery life was truly horrible but after a couple of charging cycles it seems to be getting better now I get about five to six hours of screen on time
Sent from my GT-N5110 using Tapatalk 2
Click to expand...
Click to collapse
Screen on time tells only part of the story. Its what you're doing with the screen that matters. Browsing and videos will drain the battery faster than reading a book.
Thanks?
Sent from my GT-N5110 using Tapatalk 2
It also depends on what apps have sync/auto update features turned on. I used my Note 8 on Mothers day to watch movies and I was able to watch 3 full movies and still had 30% left. Beanstown will be posting a rom soon and battery life we only improve.
duyminhphan said:
I have N5100 too. But I just have 5h onscreen and 20h stanby. Wifi and 3G allway on. Set auto brighness. Do you think my battery have problem???
Click to expand...
Click to collapse
That's normal. I sometimes get 6 hours+ screen on, other times with 7 hours screen on time. I have yetto serif this baby can make it over 9 hours screenon. I'm trying out Greenify app as it hibernates apps from wake-ups to sync. I'll let everyone how it's working out in a few days.
Still, the majority of the power would still go to the screen. Having a dark theme wouldn't help as the ambient lighting would still take the same amount of power. It's there a way to turn off half the LED lights? I really wished the screen is really Super AMOLED for energy efficiency.
I still find the Note 8 handy as a sketching device.
Sent from my GT-N5100 using XDA Premium HD app
janjannsen99 said:
Thanks?
Sent from my GT-N5110 using Tapatalk 2
Click to expand...
Click to collapse
Point being that if you get 6 hours of screen time and I get 9 hours of screen time, doesn't mean that my battery life is better than yours. I was at 8 hours screen time at 25% battery last night, but I'm not going to say that this is average for me. Depending on my specific usage, I can get anywhere from 6 to 10 hours of screen time. This is why user reported battery life must be taken with a huge grain of salt.
I dozed off and forgot to charge my Note 8 last night. My stats below show a 24-hour unplugged use with phone, wifi and bluetooth on. I had used my Note 8 with 4 hours of screen on time with just Chrome browsing, a few minutes of S Note, and 5 22-minute tv episodes.
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I still had 35% of battery left. I use Greenify to have my wakeups off when screen is off. It also hibernates apps if you don't activate them, like my Facebook doesn't update unless I check.
The screen still is the highest consumer of battery reserves at nearing 80%. I usually have auto brightness or keep it at 30% bright. Is there a way to reduce the power consumption further other than tune the brightness down?
Sent from my GT-N5100 using XDA Premium HD app
Also, take a look at Civato's kernel in the dev forum. To install it you need to first install Clockwork (I used Odin for that), then boot into your new custom recovery and flash the zip file.
The kernel supports underclocking (down to 100 mhz at cpu idle) and undervolting as well as a ~20% overclock and some other very nice features.
It's been stable for me using a 75 mvolt underclock, and I use some governor tweaks to avoid spinning the CPUs too hard when they're working on "nice" processes.
My battery life is often in the 9-10 hour range.
roustabout said:
Also, take a look at Civato's kernel in the dev forum. To install it you need to first install Clockwork (I used Odin for that), then boot into your new custom recovery and flash the zip file.
The kernel supports underclocking (down to 100 mhz at cpu idle) and undervolting as well as a ~20% overclock and some other very nice features.
It's been stable for me using a 75 mvolt underclock, and I use some governor tweaks to avoid spinning the CPUs too hard when they're working on "nice" processes.
My battery life is often in the 9-10 hour range.
Click to expand...
Click to collapse
I have One Power Guard to lower the CPU with its governor tweaks.
Is it 9-10 hour range of screen on time or just the device use per charge?
Sent from my GT-N7100 using XDA Premium HD app
9-10 screen on. And my impression this weekend was that if I leave wifi off, longer than that.
Most of my use is evening, so minimal screen brightness. And probably 70% reading, rather than primarily videos.
roustabout said:
9-10 screen on. And my impression this weekend was that if I leave wifi off, longer than that.
Most of my use is evening, so minimal screen brightness. And probably 70% reading, rather than primarily videos.
Click to expand...
Click to collapse
Good. I carry my Note 8 as a secondary device with my Note II as my primary device for communications and downloading torrents on the go. When I do need a bigger screen, I transfer media via wifi-direct. The 8 pretty much is my drawing tablet and productive tool for thinking through sketching architectural ideas. I still switch to paper for permanent recording on my sketchbooks.
8 hours isn't that good for me. I wish the screen consumption shouldn't reach to 80%.
rooted stock Galaxy Note 8 GT-N5100
I've found the battery life to be much better than anticipated. but since i've mostly been using away from home, I've had all the connections turned off and when I am at home I have auto airoplane mode activated that turns off the connections when the screen is turned off.
I also have been using the power saving mode at all times other than when playing graphics intensive games as I have no need for intensive CPU usage when browsing, drawing or taking notes etc...
Im hoping that when I root and add some custom profiles my batterylife will improve further.
I had the time to test out the Note 8's battery life on a continuous usage with mainly browsing, note and sketching with the S Note for 3 hours, about an hour's with of video watching, wifi and bluetooth connected. I've had 7 hours of actual screen on over an 8 hour period, from 8 am to 4 pm with 5% of battery left. I didn't want to fully drain it to avoid ruining the battery charging capability.
I had the screen at only 20% brightness with phone function on. The battery could be easily be drained in about 4 hours if with a brighter screen and heavier processor based tasks like games. The screen still ate away 80% of the battery charge despite being toned down to a 20% screen brightness.
rooted stock Galaxy Note 8 GT-N5100

Terrible battery life. Compare battery stats!!

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.
I am only getting around 5-6 hrs of screen on time with moderate usage. Android system and android os are probably the main problem that is causing this battery drain. Can you guys show me how ur battery life is and if u are having the same problems.
Also does ur battery stats show mobile data turned on even when it is off??
That's not bad, it is average for a phone with such power. The Note 3 was the same way. That is why they made and sold the Zero lemon battery and case for it. Which was three batteries combined.
Mines been up 13 hours and is down to 57% with the screen being 37% of the load becuase I keep brightness on max at a times. I also have bluetooth on all the time for my car as well as SPARK looking for a connection all the time.
Yeah 5 to 6 hours of screen on time is pretty good. I would say if you want anything more you need to get an extended battery.
Let your WiFi sleep when screen is off.
dschachm said:
Let your WiFi sleep when screen is off.
Click to expand...
Click to collapse
If your wifi sleeps when the screen is off, it will use 3/4G to collect data. I wonder if that is better or worse?
I believe the wifi scanning will drain the battery more. If you are truely concerned, you can download deep sleep battery saver and it will turn everything off.
I consider that Pretty good battery life coming from the n5.
Here's my gn4:
Sent from my SM-N910P using Tapatalk
That's pretty good battery life. I've never had a phone that could make it more than 4-5 hours screen on, not without disabling half the **** I use.
Im at 39 percent after 16+ hours
Sent from my SM-N910P using XDA Free mobile app
I get the same 4 to 5 hrs screen time, which is amazing. what are u smoking, OP?
Sent from my SM-N910P using XDA Premium 4 mobile app
I got 24 hr screen on time today.....plugged in. I'm sure I can get longer screen time too!
I used the 50% off coupon code Samsung sent me for buying the phone to order the spare battery and charger from their store... After code it was only $20! Now I'm not worried about battery life lol. Just arrived yesterday
And THIS thread is the reason I'm looking forward to my upgrade date Nov 1st. My Nexus 5 tapped out after 6 hours with only 2 hours of screen on time.
Sent from my Nexus 5 using XDA Free mobile app
I've had 8 hrs of screen on time with moderate use on my note 3. Even the s5 that I've used gotten better screen on time than the note 4
Tried installing better battery stats, required install as system app and wasn't working.
Now it won't uninstall, reboots phone!
Can someone help?
Sent from my SM-N910P using Tapatalk
imex99 said:
Tried installing better battery stats, required install as system app and wasn't working.
Now it won't uninstall, reboots phone!
Can someone help?
Sent from my SM-N910P using Tapatalk
Click to expand...
Click to collapse
Remove it from your system apps
I'm actually very happy with my battery life. I had a rooted GS3 before the Note 4 and I bought the ZeroLemon extended battery for the S3. I had decent battery life on that but I use my phone so much, with the screen on, that I wanted to stay off the charger for more than 4-5 hours at a time.
I was concerned about the battery life with the Note 4 before I got it because I've never had a Galaxy Note before. I have to say that I absolutely love the phone and the battery life I've been getting! I'm not rooted, at least not yet. I'm getting 6.5 to just over 8 hours of screen on with moderate to heavy usage. I am on WiFi almost all the time. I hardly make or receive phone calls but I do text and use WhatsApp a lot. No Bluetooth, no NFC, haptic feedback turned off for everything, brightness turned down very low. Mobile data turned off when I'm home since I'm on WiFi. I use the s-pen quite a bit. I use Tasker to change some settings when I go out, come home, etc. I play games (Restaurant Story, Stand O' Food, and some others daily), watch YouTube, Facebook, XDA app, lots of reading articles using Chrome Beta, lots of apps that I'm sure don't tax the phone too much. I use the black background for every app that has it as an option. Now if I've been playing GTA: San Andreas then the battery crashes fast. LOL But that's expected.
Anyway, I'm just trying to give an idea of what I do on my phone. I consider my usage to be pretty heavy but everyone has their own opinion of what heavy or moderate usage means.
Edit: amazingly I just hit 9 hours of screen on. I'm down to 2%. Now that I hit 9 hours I can plug my charger in. LOL Saw it getting close so I waited.
Sent from my SM-N910P using XDA Free mobile app
Dont know about you sir but the battery is amazing on my end.....moderate use at work all day and the phone is still on 92%.....
died4u525 said:
I'm actually very happy with my battery life. I had a rooted GS3 before the Note 4 and I bought the ZeroLemon extended battery for the S3. I had decent battery life on that but I use my phone so much, with the screen on, that I wanted to stay off the charger for more than 4-5 hours at a time.
I was concerned about the battery life with the Note 4 before I got it because I've never had a Galaxy Note before. I have to say that I absolutely love the phone and the battery life I've been getting! I'm not rooted, at least not yet. I'm getting 6.5 to just over 8 hours of screen on with moderate to heavy usage. I am on WiFi almost all the time. I hardly make or receive phone calls but I do text and use WhatsApp a lot. No Bluetooth, no NFC, haptic feedback turned off for everything, brightness turned down very low. Mobile data turned off when I'm home since I'm on WiFi. I use the s-pen quite a bit. I use Tasker to change some settings when I go out, come home, etc. I play games (Restaurant Story, Stand O' Food, and some others daily), watch YouTube, Facebook, XDA app, lots of reading articles using Chrome Beta, lots of apps that I'm sure don't tax the phone too much. I use the black background for every app that has it as an option. Now if I've been playing GTA: San Andreas then the battery crashes fast. LOL But that's expected.
Anyway, I'm just trying to give an idea of what I do on my phone. I consider my usage to be pretty heavy but everyone has their own opinion of what heavy or moderate usage means.
View attachment 2986385View attachment 2986386View attachment 2986387
Edit: amazingly I just hit 9 hours of screen on. I'm down to 2%. Now that I hit 9 hours I can plug my charger in. LOL Saw it getting close so I waited.
Sent from my SM-N910P using XDA Free mobile app
Click to expand...
Click to collapse
Wow that is awesome. I have never seen a device get that much screen on time without being rooted. Is it a software problem for me then that is causing a battery drain ?

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