Battery life's non to fancy - Galaxy S II General

I thought with a battery this big there wouldn't be much of an issue but if you push this phone it won't last the day.
I have screen set to auto, manual sync, data off, wifi off, gps off and here's how I got on today.
6am Of charger and 5mins checking email twitter then wifi off
7 hrs radio and music player,
Then through out the course of the evening I checked emails etc again for a max of 15 mins.
Phone turned of at 8pm so thats 14hrs but that was 14hrs with everything turned off and not really using the phone, my Desire S I used the same way and at this stage of the evening it still had well over a 3rd of battery left almost half. I installed Juice Defender yesterday and it made no difference.
Is this type of battery life normal for this phone?

A lot of battery related threads are there pal,
http://forum.xda-developers.com/showthread.php?t=1179809
Just keep in mind that if you are getting around 5/5½ hours screen on time then you are fine, just fine. Forget about days. And JD will do no good if it doesn't do any bad.
Regards.

Keep in mind I am using Ninphetamine 2.0.2 kernel with villain rom 2.4.2, juicedefender, and did a proper, full battery calibration.
Today I played about 2h of games, listened to music for about 3h, and then did random things like checking email, downloading apps from market etc. I have only Wifi and autorotation always enabled. It's been about 12 hours since I unplugged it, and I am at 83% of my battery life. Looks like I won't have to charge it for 4-5 days using it regularly.

m2smoe said:
Keep in mind I am using Ninphetamine 2.0.2 kernel with villain rom 2.4.2, juicedefender, and did a proper, full battery calibration.
Today I played about 2h of games, listened to music for about 3h, and then did random things like checking email, downloading apps from market etc. I have only Wifi and autorotation always enabled. It's been about 12 hours since I unplugged it, and I am at 83% of my battery life. Looks like I won't have to charge it for 4-5 days using it regularly.
Click to expand...
Click to collapse
Post Screen Shot of your battery Usage graph, Display On time.
That stats you posted is NOT POSSIBLE.
Regards.

slugger, from this and your other posts, it seems you don't like this phone much. At all.
Why keep it? Curious.

B3311 said:
slugger, from this and your other posts, it seems you don't like this phone much. At all.
Why keep it? Curious.
Click to expand...
Click to collapse
I do like the phone just keep having issues with it.

m2smoe said:
Keep in mind I am using Ninphetamine 2.0.2 kernel with villain rom 2.4.2, juicedefender, and did a proper, full battery calibration.
Today I played about 2h of games, listened to music for about 3h, and then did random things like checking email, downloading apps from market etc. I have only Wifi and autorotation always enabled. It's been about 12 hours since I unplugged it, and I am at 83% of my battery life. Looks like I won't have to charge it for 4-5 days using it regularly.
Click to expand...
Click to collapse
I call BS...

Here's my battey life from a little while ago on CM7. I'm using Juice Defender Ultimate and in my opinion, it makes a huge difference.
Sent from my GT-I9100 using Tapatalk

rocketpaul said:
I call BS...
Click to expand...
Click to collapse
http://img37.imageshack.us/img37/2506/26068320.png
That's about as good as I've managed, but that's with it basically being still, only sending a few text messages. Don't think it'd have managed that long with music/game playing added in.

B3311 said:
slugger, from this and your other posts, it seems you don't like this phone much. At all.
Why keep it? Curious.
Click to expand...
Click to collapse
When a geek is inlove with a device, its pretty hard to let it go despite the flaw. Im on the same boat right now.

m2smoe said:
Keep in mind I am using Ninphetamine 2.0.2 kernel with villain rom 2.4.2, juicedefender, and did a proper, full battery calibration.
Today I played about 2h of games, listened to music for about 3h, and then did random things like checking email, downloading apps from market etc. I have only Wifi and autorotation always enabled. It's been about 12 hours since I unplugged it, and I am at 83% of my battery life. Looks like I won't have to charge it for 4-5 days using it regularly.
Click to expand...
Click to collapse
ithehappy said:
Post Screen Shot of your battery Usage graph, Display On time.
That stats you posted is NOT POSSIBLE.
Click to expand...
Click to collapse
rocketpaul said:
I call BS...
Click to expand...
Click to collapse
+1
That's simply not true.

with very low usage i achieved 4 days but with high usage as stated it will last 1-2 days max

9 hours.
Thats it.
Sent from my GT-I9100 using XDA Premium App

If he had mobile data and the phone turned off and just on wifi that's doable.
Listening to music with the screen off is a pretty low consumption scenario, cos the cpu will hit 200mhz and the dps' will be doing most of the work.
And considering that the screen and the mobile data connection are #1 and #2 users of power!
Doable but still maybe a slight exaggeration.
The phone has a very low idle draw though, so when its just sitting there not doing anything in deep sleep, you know you wont find your battery dead which is good.

Do people really not have access to chargers in a 12-24hr period? I don't get this whole batt life issue. Yeah,they suck, but seriously, who can't plug their phone in for 20-30mins a couple times a day?
oh and I deft call BS on not having to charge for four days. Never going to happen. Even if you dont touch your phone at all for four days. Still won't happen.

mrrick said:
...who can't plug their phone in for 20-30mins a couple times a day?...
Click to expand...
Click to collapse
And you think it's weird that your battery sucks?
Sent from my GT-I9100 using XDA App

BryanNL said:
And you think it's weird that your battery sucks?
Sent from my GT-I9100 using XDA App
Click to expand...
Click to collapse
Excuse me? I don't think it's wierd at all, Its a known, absolute truth that these batteries suck.

mrrick said:
Excuse me? I don't think it's wierd at all, Its a known, absolute truth that these batteries suck.
Click to expand...
Click to collapse
Then stop making it even worse by messing up the memory (of battery) by constantly plugging in and out.
Sent from my GT-I9100 using XDA App

OT: I got a huge feeling ATK is consuming alot of battery! I just backed up Auto Task Killer Pro to my SD-Card. Uninstalled the app. Next I'm going to see if my batt. lvl. consumption shows improvement.
Will calibrate battery too as soon as it reaches 100%.
Sent from my GT-I9100 using XDA App

BryanNL said:
Then stop making it even worse by messing up the memory (of battery) by constantly plugging in and out.
Sent from my GT-I9100 using XDA App
Click to expand...
Click to collapse
Haha.
Do a search. My battery will be just fine.

Related

Some KB5 Tweaks I've Noticed

-MUCH improved battery life..55% left with about 23 hours after unplugging..wifi was on and played a good amount of angry birds (light to moderate use otherwise)
-brought back notification bar brightness adjustment thingy
-charges MUCH faster as well
-wifi doesn't crash
-no noticeable performance changes
-media scanning seems to be faster
Might edit this post later...just a little info for those updating.. :|
Sent from my SGH-T959 using XDA App
-MUCH improved battery life..55% left with about 23 hours after unplugging..wifi was on and played a good amount of angry birds
your just turning your phone on to check time or something, thats just not possible.
I can get 15 hours max, i've gotten 20 but with the minimalest use ever.
I have no data plan, so i use wifi all the time, and even with that, i dont get that kind of battery life, your just ****ing with me bud.
I'm not...serious about that.results may vary anyway. My brightness wasn't really too high. I would have
Capped, but I'm not rooted and my camera is pretty bad.
EDIT: light to moderate use otherwise
Sent from my SGH-T959 using XDA App
laylovj said:
I'm not...serious about that.results may vary anyway. My brightness wasn't really too high. I would have
Capped, but I'm not rooted and my camera is pretty bad.
EDIT: light to moderate use otherwise
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
NO NO NO NO.
Results may vary, but not by 6+ hours.
My brightness is always at either 0% or 15%
Camera being bad has nothing to do with battery life.
Rooting doesn't either.
Light to moderate? no.
VERY light? yes.
i'm sorry if i sound rude, but i just hate it when people OVER- say what they actually want to say.
23 hours and 55% left is just dumb. That would mean that you'd get 2 days worth of battery.
Either your battery's filled with magical unicorns that auto-refill your charges, or your lying.
^^^^^Riiiiiight.
I get 30 hours of use easy--I'm on it all the time.
xriderx66 said:
-MUCH improved battery life..55% left with about 23 hours after unplugging..wifi was on and played a good amount of angry birds
your just turning your phone on to check time or something, thats just not possible.
I can get 15 hours max, i've gotten 20 but with the minimalest use ever.
I have no data plan, so i use wifi all the time, and even with that, i dont get that kind of battery life, your just ****ing with me bud.
Click to expand...
Click to collapse
You can get 24+ hours just on overstock + trigger.
Beleive it or not, once when I left to work, I had 9% battery and I was like !!, so i turned off wifi, data, sync. and sed phone just to check for msgs etc and maybe 1 call.
When I got back home after ~9 hrs, I had 5% battery and I was pretty amazed. True story, take it or leave it.
I m on KB1 and right now 17hours on %52. So it is possible but it all depends on the usage.
Sent from my SGH-T959 using XDA App
@rider It's cool..I'm just going by what my phone does.. :/
Sent from my SGH-T959 using XDA App
xriderx66 said:
NO NO NO NO.
Results may vary, but not by 6+ hours.
My brightness is always at either 0% or 15%
Camera being bad has nothing to do with battery life.
Rooting doesn't either.
Light to moderate? no.
VERY light? yes.
i'm sorry if i sound rude, but i just hate it when people OVER- say what they actually want to say.
23 hours and 55% left is just dumb. That would mean that you'd get 2 days worth of battery.
Either your battery's filled with magical unicorns that auto-refill your charges, or your lying.
Click to expand...
Click to collapse
Yet another troll post by this guy.
phrozenflame said:
You can get 24+ hours just on overstock + trigger.
Beleive it or not, once when I left to work, I had 9% battery and I was like !!, so i turned off wifi, data, sync. and sed phone just to check for msgs etc and maybe 1 call.
When I got back home after ~9 hrs, I had 5% battery and I was pretty amazed. True story, take it or leave it.
Click to expand...
Click to collapse
I believe it, i never said its impossible to get 20+ hours of battery life, i've gotten there too.
but the OP has gone through 23 hours and has 55% remaining.
thats ****ing insane.
Yeah I thought it was insane too.. didn't think it was possible either.
Sent from my SGH-T959 using XDA App
xriderx66 said:
I believe it, i never said its impossible to get 20+ hours of battery life, i've gotten there too.
but the OP has gone through 23 hours and has 55% remaining.
thats ****ing insane.
Click to expand...
Click to collapse
The problem with people posting their drain times is that light use for you and me might be considered heavy use by the OP. With that said, if you properly want to tell people how good your battery is, post your screen on time. At least that gives an idea as to how good your battery is in comparison to something we can also measure.
Sent from my SGH-T959 using XDA App
vinnydakid said:
The problem with people posting their drain times is that light use for you and me might be considered heavy use by the OP. With that said, if you properly want to tell people how good your battery is, post your screen on time. At least that gives an idea as to how good your battery is in comparison to something we can also measure.
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
the DEFAULT settings for battery usage is the most inaccurate.
Use another app from the market, that shows like a line graph of when you charged etc.
I have MIUI, so i know my battery life is horrible.
What other improvements...
Other than battery life what other improvements did this update bring. When I updated my wife's phone to 2.2 she said it was crap. Visual voice mail did not work properly which was a big deal to her.
Did this update have any other improvements?
Well not really other than the OP. No real overall performance changes. Just about as fast or slow as froyo depending on what you think about it.
Sent from my SGH-T959 using XDA App
phrozenflame said:
You can get 24+ hours just on overstock + trigger.
Beleive it or not, once when I left to work, I had 9% battery and I was like !!, so i turned off wifi, data, sync. and sed phone just to check for msgs etc and maybe 1 call.
When I got back home after ~9 hrs, I had 5% battery and I was pretty amazed. True story, take it or leave it.
Click to expand...
Click to collapse
If you literally do nothing on it (other than leave it on), a fairly new battery will drain slower than that. Mine will last a couple days if all I do is turn the screen on to check the time.
After I put 2.2 on my phone I noticed that vvm kept running in the background and was draining the battery. Was this fixed?
Sent from my SGH-T959 using XDA App
Is avatar not playing for anyone else? I fixed it for stock KA6 by deleting a file/symlink. Now with KB5 it will not play. How can I fix it again? Thanks.
Sent from my SGH-T959 using XDA App
xriderx66 said:
I believe it, i never said its impossible to get 20+ hours of battery life, i've gotten there too.
but the OP has gone through 23 hours and has 55% remaining.
thats ****ing insane.
Click to expand...
Click to collapse
I have to concur with the posting, I forgot to plug in my phone yesterday so when I got up this morning it had been 27 hours since I last plugged in and I was at 56% left according to my battery widget running Bi-Winning with overstock version1.4, I got to say this much improved battery life surprised me. i do not have my screen @ 45% I run @ 60% bright
I get faster data transfer as well. So this is all good...... Too bad Samsung took 8 Months to figure out how to code a decent modem......
Sdobron said:
Yet another troll post by this guy.
Click to expand...
Click to collapse
+1 kid needs some manners..
Sent from my SGH-T959 using XDA App

Battery Life Horrible

this just started starting recently.
battery drops 5% under 1 min without even use of the phone. on standby.
im on royal panache.
ran battery dry than charged it back to 100% and did battery calibration. still horrible!!
any suggestions?
Check battery usage under settings see what's using it up. also check your CPU settings. Although I've had that kind of battery drain. Sense just hands down has terrible battery life. Go AOSP.
Nicgraner said:
Check battery usage under settings see what's using it up. also check your CPU settings. Although I've had that kind of battery drain. Sense just hands down has ****ty battery life. Go AOSP man Sense is a fat chick in a room full of super models.
Click to expand...
Click to collapse
lmao i know but I LOVE THE CAMERA :[ even though i dont use it alot lmao. oww well. off you royalginger.
bstylz911 said:
this just started starting recently.
battery drops 5% under 1 min without even use of the phone. on standby.
im on royal panache.
ran battery dry than charged it back to 100% and did battery calibration. still horrible!!
any suggestions?
Click to expand...
Click to collapse
After calibration give it a few days it will go back to normal.
Sent from my HTC Glacier using XDA Premium App
Check the CPU usage, find the rogue app.
I'm easily running over 24 hours with my customized Panache ROM.
Clearly, whoever thinks Sense isn't good on battery, never tried one properly.
Jack_R1 said:
Check the CPU usage, find the rogue app.
I'm easily running over 24 hours with my customized Panache ROM.
Clearly, whoever thinks Sense isn't good on battery, never tried one properly.
Click to expand...
Click to collapse
Whats a rogue app? And how do you get over 24 hours on battery life?
yeah Sense does drain the battery, but the UI is just awesome IMO. I get roughly 19hrs on a full charge with moderate usage(deleted bloatware, setcpu profiles) whereas on AOSP I would get 25+hrs on a full charge with same usage. really, the 'display' is the battery killer on sense. try to lower your backlight brightness, no window animations, and lower the screen timeout to see if that helps you
teiknarfy89 said:
Whats a rogue app? And how do you get over 24 hours on battery life?
Click to expand...
Click to collapse
An app written badly enough to cause CPU to hang in 100% (sometimes it hangs the system, and then the system shows 100% CPU constant usage).
Happened sometimes to me on Nexus. Sometimes can also be caused by restoring system data from backup, if the system data isn't fully compatible.
When I almost don't use the phone - I can probably get past 40 hours of uptime before needing recharge, since the idle drain is somewhere between 1%-2% an hour for me. When I use it heavily (GPS) - I expect it to drain the hell out of battery after 6-7 hours of continued use, and no build would do better, Sense or no Sense. When tethering - it can last towards 10 hours (tethering drain is ~10-12% per hour too). My usage is light, I'm always on auto-brightness, I'm not overclocking, so generally I get the phone to recharge in the evening with half the charge still there - unless I tether for a couple of hours during the day and have several long calls, and in that case I'm charging it 18 hours later with ~20% left.
Ah, and I use customized Royal Panache.
Jack_R1 said:
Check the CPU usage, find the rogue app.
I'm easily running over 24 hours with my customized Panache ROM.
Clearly, whoever thinks Sense isn't good on battery, never tried one properly.
Click to expand...
Click to collapse
How can I check this ?
Sent from my HTC Glacier using XDA App
Download watchdog
Sent from my HTC Glacier using XDA Premium App
or a simple solution,
1- if ur using 4g turn it off while not in use.
2. edit the sync options and make it longer or manual.
3- when not in use disable wifi.
and suddenly u will get far better battery life
bstylz911 said:
battery drops 5% under 1 min without even use of the phone. on standby.
Click to expand...
Click to collapse
I had the exact same issue. I was able to fix it by going back to stock (via this guide), re-rooting, and re-flashing the ROM. Everything is working great again. Good luck!
atifsh said:
or a simple solution,
1- if ur using 4g turn it off while not in use.
2. edit the sync options and make it longer or manual.
3- when not in use disable wifi.
and suddenly u will get far better battery life
Click to expand...
Click to collapse
I've done this.
Sent from my HTC Glacier using XDA App

Amazing batterylife (5d 21h) with Sam's S.U.R.F.A.C.E. JVU v9.01 ROM!!!

Hi everyone, I just wanted to say that my battery was 5 days and 21 hours has endured, with Sam's SURFACE JVU v9.01 ROM! I called at that time about 1h, 50 SMS sent, angry birds played 1h, 30min data connection, and 30min with wifi connected. I find this simply amazing and really did not know that this was possible. Apparently so, because Sam's ROM course! So thank you Sam!
Well, on standby with not apps running and wifi off, my phone drains about 20% a day at most if I don't use it. 1 hour of calling, 1hour of angry birds and some surfing would usually also drain about 30%. So in general, with such minimal use, the battery would last about 3-4 days anyway.
You convince me to test this ROM!
disclaimernotice said:
Well, on standby with not apps running and wifi off, my phone drains about 20% a day at most if I don't use it. 1 hour of calling, 1hour of angry birds and some surfing would usually also drain about 30%. So in general, with such minimal use, the battery would last about 3-4 days anyway.
Click to expand...
Click to collapse
Yeah wright!
Sent from my GT-I9000 using xda premium
How does it perform on games? Any lags?
funny
neurobashing said:
You convince me to test this ROM!
Click to expand...
Click to collapse
dito
(message was too short so i had to put some extra words in)
wackowizzard said:
Yeah wright!
Sent from my GT-I9000 using xda premium
Click to expand...
Click to collapse
It's true. Roms which drain battery are 2.3.3-based roms, as well as poorly made custom roms. Most other roms, especially the froyo 2.2.1 ones, have very good battery life. I'm not saying that the rom you're using isn't good, but I'd simply like to point out that battery life with your amount of usage is gonna be long with most roms anyway.
dont want to troll here, but if standby usages are higher than screen that means you havent used it that much, so it's not due to the rom but due to almost no usage. 3-4 hours of screen turned on a week is almost no use of this phone.
(screen usage uses most battery and it lasts for about 4 hours of screen, it doesnt matter if it is used in a few hours or you dont use your phone and it cumulates 4 hours of screen use during a week)
picard666 said:
dont want to troll here, but if standby usages are higher than screen that means you havent used it that much, so it's not due to the rom but due to almost no usage. 3-4 hours of screen turned on a week is almost no use of this phone.
(screen usage uses most battery and it lasts for about 4 hours of screen, it doesnt matter if it is used in a few hours or you dont use your phone and it cumulates 4 hours of screen use during a week)
Click to expand...
Click to collapse
I also tend to gree with you, after all this battery life on a samsung base is normal
Never managed to get more than 2 days out of my phone so far on any rom but I use it alot and I am pleased with it's battery life
You may all tell what you want, but have flashed many rom's, and i use my phone most of the time like i wroted in first post. And never i had a batterylife like this! Si, for me its rom dependent.
Sent from my GT-I9000 using xda premium
Incredible! Grote, dank u wel. I will try this ROM
Nothing special at all, u did not use data, that way it works like a Nokia dumbphone. Also u did not turn on screen very often, if u try this with a froyo rom and speedmod kernel you would even get more out of one charge.
--------------------------------------
tapatalked from GalaxyS
FadeFx said:
Nothing special at all, u did not use data, that way it works like a Nokia dumbphone. Also u did not turn on screen very often, if u try this with a froyo rom and speedmod kernel you would even get more out of one charge.
--------------------------------------
tapatalked from GalaxyS
Click to expand...
Click to collapse
That's right. you can't even see the "screen" usage on the screenshot, it means you didn't use it almost at all...
if i use my phone the first thing in battery usage is the "screen" than the other apps and stuff...
My sgs holds 14 days!!!!
There is one limitation, however .... I did not turned it on in this period
Seriously ...RLY :-/
Sent from tam-tam drum
Lol... Buddy u vent used the phone like what an avg user over here does...
2.3.6 jw1 rom with data for email push all the day active the battery holds 24hours at most ...depends the other usage
Battery 5 days... ummm you sure you did not leave phone in charging mode.. Basically I can get more too if i don't use as much as you... lol
I'm pretty sure there is nothing revolutionary in this thread - my SGS could last 7 days maybe more even. Fresh cheap 1900mah battery - no stupid widgets or programs in background, no gps, no wifi, 3G ON.
wackowizzard said:
5 days and 21hours
Click to expand...
Click to collapse
Not weird. When unused, battery lasts for a long time even on stock roms - I'm on stock JVT. With the help of a properly configured juice defender or tasker, you can easily get draining paces this low even by using the phone a bit more. Nonetheless I'm more than confident that Sam's JVU provides even more time to battery than stock roms.
to be honest, I'm hardly far from a power source that long though.

Terrible battery life

Hello everyone, i purchased my Nexus 7 and it arrived in the mail 3 days ago. And as with every other Android device ive ever owned, the batter is absolutely terrible. I get about 2hrs on screen time when browing the web and maybe playing an occasional game. Does anyone have any idea whats going on? Or have any way to help? Thanks so much
That is pretty bad. Try a factory reset. Might be something you installed.
I'd hate to do a factory reset cause I just barely got it set up but..I'll try it anyway tonight
Sent from my SGH-T999 using xda premium
Scoutamis said:
I'd hate to do a factory reset cause I just barely got it set up but..I'll try it anyway tonight
Sent from my SGH-T999 using xda premium
Click to expand...
Click to collapse
Doing a factory reset before installing anything is becoming the gold standard.
Hope it helps you.
I get between 7-9 hours of active use. Sounds like some process is running amok on yours. I didn't factory reset when I bought it either....though I have rooted it since then, but battery life is about the same pre and post root.
You might want to consider a program to monitor battery use to see what's eating it up. Maybe do that before you factory reset it so you don't install the same thing again.
ScandaLeX said:
Doing a factory reset before installing anything is becoming the gold standard.
Hope it helps you.
Click to expand...
Click to collapse
Really? Like as soon as you set up the device, you are suppose to factory reset it? And since im facotry resetting it 3 days into having it, do i have to calibrate the battery again?
ExploreMN said:
I get between 7-9 hours of active use. Sounds like some process is running amok on yours. I didn't factory reset when I bought it either....though I have rooted it since then, but battery life is about the same pre and post root.
You might want to consider a program to monitor battery use to see what's eating it up. Maybe do that before you factory reset it so you don't install the same thing again.
Click to expand...
Click to collapse
Do you have any battery monitoring apps in mind? I would love to see what is eating up my battery
Scoutamis said:
Do you have any battery monitoring apps in mind? I would love to see what is eating up my battery
Click to expand...
Click to collapse
System panel is a good app to find what's using your CPU and better batterystats can help find what's keeping your phone from going to deep sleep. An easy way to see if this is the case is go into battery setting and select the first option(history details). Compare the Awake bar with the screen on bar. Those two should be nearly identical if not then you have a rogue app.
Scoutamis said:
Do you have any battery monitoring apps in mind? I would love to see what is eating up my battery
Click to expand...
Click to collapse
The one I've seen mentioned several times in here is BetterBatteryStats. I just don't want to drop $3.00 on something I don't need. It might help your issue though.
https://play.google.com/store/apps/details?id=com.asksven.betterbatterystats
neotekz said:
System panel is a good app to find what's using your CPU and better batterystats can help find what's keeping your phone from going to deep sleep. An easy way to see if this is the case is go into battery setting and select the first option(history details). Compare the Awake bar with the screen on bar. Those two should be nearly identical if not then you have a rogue app.
Click to expand...
Click to collapse
Alright ill try system panel, and i looked at the battery setting and awake and screen on are almost exactly the same.
ExploreMN said:
The one I've seen mentioned several times in here is BetterBatteryStats. I just don't want to drop $3.00 on something I don't need. It might help your issue though.
https://play.google.com/store/apps/details?id=com.asksven.betterbatterystats
Click to expand...
Click to collapse
Well then, here you go:
http://forum.xda-developers.com/showthread.php?t=1179809
Scoutamis said:
Alright ill try system panel, and i looked at the battery setting and awake and screen on are almost exactly the same.
Click to expand...
Click to collapse
have you flashed any kernels or roms? sometimes this makes the tablet report the wrong battery stats for a bit.
did you run the battery down until it turns off and then give it a full charge? sometimes you have more juice than what is being reported. ive been stuck at 1-2% for over an hour before. Most likely its a rogue app though, system panel and better batterystats should find out what app it is. if they dont then it could be that you have a defective battery...
Been on mine continuously for 3 hrs 18 mins and at 60%. Excellent if you ask me. Next step up in battery life would be Transformer series with dock.
Scoutamis said:
Hello everyone, i purchased my Nexus 7 and it arrived in the mail 3 days ago. And as with every other Android device ive ever owned, the batter is absolutely terrible. I get about 2hrs on screen time when browing the web and maybe playing an occasional game. Does anyone have any idea whats going on? Or have any way to help? Thanks so much
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Click to collapse
Quite the opposite for me; unlike every other Android device I've had (Nexus One, GS2) the battery life is excellent. I watched 720p mkv video on the train yesterday for a good 3 hours, and still had ~70% by the time I got home, from a full charge.
The battery life is excellent, as far as I'm concerned.
Scoutamis said:
Really? Like as soon as you set up the device, you are suppose to factory reset it? And since im facotry resetting it 3 days into having it, do i have to calibrate the battery again?
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Don't think you needed to calibrate the battery to begin with. I usually get fine battery life without doing anything special.
Something must be causing the poor battery on your Nexus, Yesterday after my N7 was fully charged, I watched the movie Thor for 1hr and 54 minutes n and my battery only dropped to 83%.
I'm at 16 hours and 52 minutes with 3 hours and 44 minutes of on screen time, the battery is at 51%
Sent from my Nexus 7 using Tapatalk 2
neotekz said:
have you flashed any kernels or roms? sometimes this makes the tablet report the wrong battery stats for a bit.
did you run the battery down until it turns off and then give it a full charge? sometimes you have more juice than what is being reported. ive been stuck at 1-2% for over an hour before. Most likely its a rogue app though, system panel and better batterystats should find out what app it is. if they dont then it could be that you have a defective battery...
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My N7 is completely stock and has never been rooted. I also did do a couple charge cycles which didn't seem to help much. And better batterystats has AudioOut_2 at 38% (while I'm playing music) but other than that it doesn't seem to be a rogue app
Sent from my Nexus 7 using XDA Premium HD app
Download CPU spy from the market to see if the tablet is sleeping properly, and what frequency its constantly running at
Scoutamis said:
My N7 is completely stock and has never been rooted. I also did do a couple charge cycles which didn't seem to help much. And better batterystats has AudioOut_2 at 38% (while I'm playing music) but other than that it doesn't seem to be a rogue app
Sent from my Nexus 7 using XDA Premium HD app
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Unless you listen to music for over 5 hours or streaming the songs it shouldnt use that much battery. If you can't find a wakelock with better battery stats then it might just be a bad unit.

Ridiculous battery drain on standby

It seems that the battery drain on my newest N7 (RMA'd first one) is waay worse than on the other, I'll attach some screen shots of what I mean.. it may be just the WiFi is using a lot more than the other's :S I left it 4 hours alone with WiFi and the battery drained 20+ % which even with WiFi on seems excessive does it not? Is it possible I got one with a faulty WiFi radio? I will be testing tomorrow (or maybe tonight) to see battery drain with WiFi turned off to compare, because it also seemed to drain fast when I was just out and about with WiFi off :/ worried I have bad battery, deep sleep isn't working right (it is going into deep sleep or at least thinks it is from looking at cpuspy), or faulty WiFi... or just too early to judge XD has anyone noticed battery improve over time ? I forget if I did was a month ago I got the original
BTW first screen shot was taken pretty much right as I was leaving for work, so you can compare the battery drain there..
Sent from my Nexus 7 using xda app-developers app
I doubt it's a bad wifi radio, its probably an app that is syncing like crazy in the background.
I'm currently watching the MediaServer app use a disproportionate amount of battery (14% and rising). I deleted a number of images which must of kicked in the scanner which must be very inefficient.
I also noticed my N7 become very slow at the same time.
Possibly you downloaded a large amount of images/music/etc before putting your device to sleep...
Sent from my Nexus 7 using Tapatalk 2
Toast95135 said:
I doubt it's a bad wifi radio, its probably an app that is syncing like crazy in the background.
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I really wish I could figure out why maps keeps starting a process.. can you check to see how many instances of maps there are ? In particular one running Prefetcherservice.. as for the other comment, media server is sitting at 6%, android is at 14%, and screen at 67%.. though I did copy a bunch of songs and pictures over after the RMA, is there a way to fix these or should I delete them to see if it gets better ?
Sent from my Nexus 7 using xda app-developers app
Sigh, I might just have a bad battery, or preferably poorly calibrated, since another hour of use, just browsing and such, and I'm down 20% more -_- hope I don't have to RMA again
Sent from my Nexus 7 using xda app-developers app
As a side question.. how hot does your tablet get under normal use? Mine has been heating up quite a bit in the battery section i think with just average on browser use :/
noneabove said:
As a side question.. how hot does your tablet get under normal use? Mine has been heating up quite a bit in the battery section i think with just average on browser use :/
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Nothing you've mentioned sounds even the slightest bit out of the ordinary. I know a person who thinks they are always sick is a hypochondriac so is someone who always thinks there is something wrong with their computing device a hypo-com-driac?
findmike said:
Nothing you've mentioned sounds even the slightest bit out of the ordinary. I know a person who thinks they are always sick is a hypochondriac so is someone who always thinks there is something wrong with their computing device a hypo-com-driac?
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Bahaha good one I dunno, the problem is that this is literally my fourth N7 since the other three allll suffered from major screen lifting, so maybe I am looking for something wrong just so i can make sure it's perfect... Though I do think the battery life is pretty weak, I think I may have figured SOMETHING out, the only difference between this and my original is that my original had a huge section of the map of my area downloaded, and since I did that maps hasn't started any additional processes.. so good sign ? maybe ? haha
noneabove said:
Bahaha good one I dunno, the problem is that this is literally my fourth N7 since the other three allll suffered from major screen lifting, so maybe I am looking for something wrong just so i can make sure it's perfect... Though I do think the battery life is pretty weak, I think I may have figured SOMETHING out, the only difference between this and my original is that my original had a huge section of the map of my area downloaded, and since I did that maps hasn't started any additional processes.. so good sign ? maybe ? haha
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Yeah this might be a good time to stop looking for trouble and just enjoy the tablet for a while. I drop mine on the charger in the morning and don't ever really think about the battery other than that. Whatever the battery stats say now they won't say in a week and they won't say after you flash to a different ROM. If you have wifi on apps will sync and the tablet will loose it's charge. I'm never far enough away from an outlet to make it much of a concern. So maybe just take a breather, install the Angry Birds and have some fun for a bit. Eventually we'll have ROM's and kernels that make this thing sip electricity but for now I get the few hours a day I need out of it on one charge so I'm set.
findmike said:
Yeah this might be a good time to stop looking for trouble and just enjoy the tablet for a while. I drop mine on the charger in the morning and don't ever really think about the battery other than that. Whatever the battery stats say now they won't say in a week and they won't say after you flash to a different ROM. If you have wifi on apps will sync and the tablet will loose it's charge. I'm never far enough away from an outlet to make it much of a concern. So maybe just take a breather, install the Angry Birds and have some fun for a bit. Eventually we'll have ROM's and kernels that make this thing sip electricity but for now I get the few hours a day I need out of it on one charge so I'm set.
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You think the battery life will get much better than what it is? My only other android experience is my HTC Desire Z which has a horrible battery as it is so it didn't improve much at all with custom roms
Speaking of improved life through ROMs and kernels, have you noticed any kernel providing particularly better battery life ? I'm on trinity right now, no voltage changing, but underclocked to 1.1 ghz from 1.3
Factory reset, see if the problem continues. That's the only way decide if it's a HW problem.
And my N7 uses effectively 0% battery in standby, it was off the charger yesterday for 6 hours and when I started playing around it was still at 99%. I turn off wifi on screen off, however.
Use http://forum.xda-developers.com/showthread.php?t=1179809 to find out what's waking up your phone, the apk is in the second post. Install, charge it up, unplug, leave for 4 hours idle then look at partial wakelocks and alarms.
I saved quite a bit of standby time by disabling location services and Facebook.
If your not using nfc that could save battery?
Sent from my Nexus 7 using XDA Premium HD app
Salty Wagyu said:
Use http://forum.xda-developers.com/showthread.php?t=1179809 to find out what's waking up your phone, the apk is in the second post. Install, charge it up, unplug, leave for 4 hours idle then look at partial wakelocks and alarms.
I saved quite a bit of standby time by disabling location services and Facebook.
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^ do that
I used Better Battery Stats to figure out Google Maps was causing wakelocks. I cleared data in the maps app and now my 7 idles without much battery drain at all.
northbridge said:
^ do that
I used Better Battery Stats to figure out Google Maps was causing wakelocks. I cleared data in the maps app and now my 7 idles without much battery drain at all.
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Haha I actually just read your post in the kernel thread about this and immediately cleared map data, now I'm about to unplug and see what happens!
Sent from my Nexus 7 using xda app-developers app
noneabove said:
Haha I actually just read your post in the kernel thread about this and immediately cleared map data, now I'm about to unplug and see what happens!
Sent from my Nexus 7 using xda app-developers app
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:good:
If that doesnt work for you, Better Battery Stats should be able to tell you what app is causing the drain.
northbridge said:
:good:
If that doesnt work for you, Better Battery Stats should be able to tell you what app is causing the drain.
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Well, left it for an hour on standby with wifi on, 0% drain, let's see how rest of day goes !
northbridge said:
:good:
If that doesnt work for you, Better Battery Stats should be able to tell you what app is causing the drain.
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So it seems like partial wakelock is mostly audioout_2 which i assume comes from me playing a game with music amongst other things?
Alarms says com.google.android.googlequicksearchbox has 50 wakeups, and maps has 38 :S why does maps keep trying to kill me?! and what is the googlequicksearchbox doing waking the tablet up...
Wlan_Rx_wake seems to be the culprit of semi bad battery. Is there a way to prevent the tablet from waking up all the time? Maybe just unsync or turn off WiFi instead?
noneabove said:
So it seems like partial wakelock is mostly audioout_2 which i assume comes from me playing a game with music amongst other things?
Alarms says com.google.android.googlequicksearchbox has 50 wakeups, and maps has 38 :S why does maps keep trying to kill me?! and what is the googlequicksearchbox doing waking the tablet up...
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When my battery drain was bad I had something like 250+ wakeups from maps under the alarms section in only a few hours off the charger and Maps was showing up as the most common reason for partial wakelocks.
I think AudioOut_2 is normal - Im not sure what it does though. Im now at 8+ hours of standby with 99% battery. Under alarms im showing 138 Maps wakeups and 76 from google quick search box. My drain is all gone now though so i assume this is within normal range. The better battery stats thread and a few other threads on XDA have detailed descriptions of the different battery draining wakelocks and possible remedies. Not all wakelocks are bad though.

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