Database Users

Wifi makes a difference.

After all this time of having a screwed up Wifi I realize it was the router. Once I got a new router I'm sitting on 19 hours with 39% left. I know some people have better battery life than that but I'm impressed. Btw im running myn's warm 2.2 with kings#11 kernal. It's awesome and fast
Sent from my PC36100 using XDA App

jacoballen22 said:
After all this time of having a screwed up Wifi I realize it was the router. Once I got a new router I'm sitting on 19 hours with 39% left. I know some people have better battery life than that but I'm impressed. Btw im running myn's warm 2.2 with kings#11 kernal. It's awesome and fast
Sent from my PC36100 using XDA App
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What is the display on time?

Only about 2 hours which us is kinda low.
Sent from my PC36100 using XDA App

jacoballen22 said:
Only about 2 hours which us is kinda low.
Sent from my PC36100 using XDA App
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That's about right for battery life then. I don't think you can do much better.

im convinced the only thing that kernels/roms can help mitigate is usage burn, radio burn (no signal) is going to drain a battery no matter what. I keep my phone on wifi at my house and get great battery life. At work, when the phone is on 3G and not getting any signal the battery dies wicked fast. between 730 and 1030 today my battery dropped from 85% to 25%. Ive also had my battery die in 3 hours flat because of no signal.

yea, I forget where i read it, (i think when i used to go to ppcgeeks forums) but there was actually a lengthy detailed rundown of real world usage of 3G vs wifi, and wifi definately draws less power.

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I took this from my first post on battery life. I wish it could be better cause I realize I barely used the phone during the 22hrs. Half of it was sleep and only ten minutes in a call and some YouTube videos. Also some music with PowerAMP.
Sent from my PC36100 using XDA App

scooter185 said:
im convinced the only thing that kernels/roms can help mitigate is usage burn, radio burn (no signal) is going to drain a battery no matter what. I keep my phone on wifi at my house and get great battery life. At work, when the phone is on 3G and not getting any signal the battery dies wicked fast. between 730 and 1030 today my battery dropped from 85% to 25%. Ive also had my battery die in 3 hours flat because of no signal.
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After experimenting I have found out that instead of putting it in airplane mode you could just turn off 3g and it last quite a bit(at work). I only turn it on during break time. Leaving 3g makes me be lucky to leave work in double digit battery power.
from my EVO using XDA app.

jacoballen22 said:
After experimenting I have found out that instead of putting it in airplane mode you could just turn off 3g and it last quite a bit(at work). I only turn it on during break time. Leaving 3g makes me be lucky to leave work in double digit battery power.
from my EVO using XDA app.
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I second this. Pretty much don't use 3G, and sure as heck not 4G, if you don't have to. My battery will literally stand for hours at a certain percent with 3G off and screen off. I don't have a WiFi router yet but seriously thinking about getting one just for use when I'm at home.

You should do it! Lol it is good for many things not just the EVO. Ya know laptops iPod touches and stuff lol.
from my EVO using XDA app.

BIG battery problem

Hy everyone,
after i change rom to cyanogenmod7 my battery life is very bad. Here is what i did...
Rooted, installed CM7, battery was bad, restarted battery stats (i red it somwhere on this forum that whan changing rom battery stats have to be restarted), before that restart battery was, well not good as in stock froyo, but average... after that it is terrible. In just 6 and half houers when i was sleeping it was drained 33%, and after i wake up and use phone, in just 15min it loose 10%. When i looke at 'what use my batteru' cell standby is 45%!! Thats not normal, right? How to fix this isue?
Sent from my HTC Wildfire using XDA App

have you try to reset the battery stat?

It looks like you reset battery stats when you weren't on full battery.
Only reset when calibrating battery, and your battery is full.
Sent from my SPH-D700

It was full, than disconected from charger, than restarted battery stats, after that drained completly and charged to 100%.
Sent from my HTC Wildfire using XDA App

Might have had a bad flash then, unless your battery is still setting in, give it a few cycles and it should start to give you better battery life
Sent from my SPH-D700

And don't keep the minimum cpu frequency value to high. Because the phone doesnt need a huge frequency in standby mode. That also matters.
Sent from my HTC Wildfire using XDA App

CPU is set by default... also i need to say that its charging extremly fast (i can see progress while im typing this post, 4%).
Sent from my HTC Wildfire using XDA App

ilDuceo said:
CPU is set by default... also i need to say that its charging extremly fast (i can see progress while im typing this post, 4%).
Sent from my HTC Wildfire using XDA App
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Then yeah you need to charge your phone while on to 100%, turn it off till its complete again, the reset batery stats and use it till it dies and it should be good.
Sent from my SPH-D700

Ok, ill try that now. Hope it will help!
Sent from my HTC Wildfire using XDA App

Got the same problem . Yesterday I went to sleep around 12:00 with 49% battery left and in the morning around 09:00 just 6% was left. I will try above tip
@ilDuceo: any improvements on ur battery?

faraaz said:
@ilDuceo: any improvements on ur battery?
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I recalibrate it again... now its lil bit better when im not using phone and wifi/data are disabled. But, when im using wifi it still sucks!:\ For now i will stay at CM7 cause i like it very much, but im thinking about geting back to my old FroYo.

ilDuceo said:
I recalibrate it again... now its lil bit better when im not using phone and wifi/data are disabled. But, when im using wifi it still sucks!:\ For now i will stay at CM7 cause i like it very much, but im thinking about geting back to my old FroYo.
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I also recalibrated the battery and reverted back to stock froyo rom (with overclock kernel and I removed a bunch of system apps). Battery seems to last a lot longer now

Another solution would be a 3000mAh battery i saw somewhere.. phone gets a little bit thicker, but its perhaps worth it?

faraaz said:
I also recalibrated the battery and reverted back to stock froyo rom (with overclock kernel and I removed a bunch of system apps). Battery seems to last a lot longer now
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I will try that. What kernel did u use for that? And how did u remove system apps?
But must say, 23h 18m since of the charger and battery is 41% with some wifi/data, 12-30 sms and few cals. Still not good as FroYo, but not so bad as before recalibration.

For the first few runs after new ROM and batstatts try to have some full cycles
Sent from my HTC Desire S using Tapatalk

ilDuceo said:
I will try that. What kernel did u use for that? And how did u remove system apps?
But must say, 23h 18m since of the charger and battery is 41% with some wifi/data, 12-30 sms and few cals. Still not good as FroYo, but not so bad as before recalibration.
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infinity mc4 kernel. you can remove system apps with Titanium backup (button backup/restore -> select app -> un-install). Look out that u don't remove apps that are active used by the ROM. I have deleted like 30 apps + widgets.
yesterday same time, like in my post above, from 99% to 97% with wifi/data on. So much better!!

faraaz said:
I also recalibrated the battery and reverted back to stock froyo rom (with overclock kernel and I removed a bunch of system apps). Battery seems to last a lot longer now
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What SetCPU values do you use?
I have the same battery draining problem since I flashed WildPuzzleRom and I think of going back to stock ROM...

Over the last month or so ive tried various roms nightly's etc and the most i got out of the battery was around 15 hours with the batt stats fix, froyo on the other hand different almost 36 hours at the best and worst still around 18.

Just found my old one dead
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Sent from my HTC Sensation Z710e using XDA App

My battery life is strange. Once it can handle 6 days without charge(i put it charging at 15%) using wifi, alot of dialing. Second time it handle only two days without using it. Last time it handled 4 days with same dialing and wifi.
I am using Cyanogenmod 7, Smartass governor, min cpu=245mhz, max 710mhz.

my baterry usage history 100hours never charge

9100g original rom 2.35 ,never root .
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this time start use from93%

How much did you actually use your S2?

My guess is very little, look at the power use ratio of screen vs. cell standby, they are almost the same. Right my phone is 57% display vs. 3% cell standby.

This looks like barely open SGS2, no wifi , barely touched...

You have never touch your phone.....have you..?? Hey....enjoy your phone and have a normal life..........
Sent from my GT-I9100 using XDA App

He don't even on the 3g. Lol.
Sent from my GT-I9100 using XDA App

What a waste of a perfectly good phone
Sent from my GT-I9100 using XDA App

I rather someone show me, display on for more than six hours
Sent from my GT-I9100 using XDA App

My battery rarely lasts more than 20-24 hours, , I am not leaving the phone to rest hardly ever... I will try to find out how much can battery last if I don't use the phone at all...
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Alvin Lai said:
I rather someone show me, display on for more than six hours
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Exactly, posts like this are tragic in my book, oh look how many hours i get, anyone can get that if you don't or barely use your phone.

Wow what a pointless first post.. Congratulations on not using phone..
Anyone could get battery life of xxx hours if they never use there phone, it's the screen on time that everyone cares about since generally people with such amazing devices rooted and pimped can't put there phone down...

I get 4:30 hours with CheckROM 4.0 and DK kernel, all values to stock... and that's with playing games! My battery is the stock one.
I guess with minimum brightness, underclock and undervolt and no games i can get 5+ hours but I wouldn't count that as normal usage either.

i charge mine everyday and always excited and looking forward to charging.

jiansiong said:
9100g original rom 2.35 ,never root .
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Fantastic....
If you wanted to buy a phone you aren't going to use and then brag about not using at all for 100 hours maybe next time you could review this?
Would make you look a fair bit less ridiculous, you would have got the same use out of it and would have saved you over £300...

The only great thing about having such a great battery life and not using your phone is if you end up losing it, which is unlikely if its lying there on the side all the time.. At least you know its bound to stay awake for a few days so you can send over Plan B and locate it. Funnily enough I went on a cruise this year, start of November and after 5 days of no use (being in the middle of the Ocean n all, i went to grab my phone from inside the suitcase to find it was still turned on, (i swore i turned it off) and the battery dropped no more than 40 percent. Was amazed to find it last so long, especially as i've not got the patience to leave it dormant for so long.

keep your galaxy off and the battery usage could be increased to a year lol

bought one of the best phone in the market and not using it all features? rofl
dont have what to say

This post is similar to "Hey look at my mileage of the car that is parked in the garage".
Kinda pointless imo.

Lot of comment you got there LOL
Mine are using about ½% per hour in standby (little sync, good 3G connection, no Wifi), so it might last for about 200 hours (8 days) ... if I ever should go into some kind of long lasting coma where I couldn't use my phone

What's the longest screen-on time you've ever had?

Sometimes the problem with a big screen is that it can use up a lot of juice.
Even before I bought my Note I had heard of the rumours about really bad battery drainage that came with ics.
Well today, a Sunday (in Australia at least), rather than studying hard for my Maths test tomorrow I was on my phablet, watching youtube (a friend showed me this really awesome channel recently) videos, surfing the web and xda, whatever; pretty much the phone was hardly on idle/standby at all.
Except for when I had lunch in the middle.
Anyway, it was the best battery life I have ever had.
Here are some screenshots:
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In fact the battery life was so incredibly good, I thought I was using one of my two Anker 2700mAh batteries and it wasn't until I took off the battery cover to change the battery did I realise that I was actually using a stock Samsung 2500mAh battery.
Typically, when I'm at school and the phone is just idle in my pocket all day, I get around 3 hours screen on time with the stock battery, and 4 hours with the Anker batteries.
So this 5 and a half hours with little idle time is absolutely mind blowing for me (hence why i felt the need to post about it on xda).
Without needing to charge it, what is the longest screen-on time you've had with your 5.3 inch beast?

4.5~5 hours, stock gb, with some crap freezed (unasomething, samsung push,and some other) and k2-12 speedmod kernel on lb1(regional/device dependant) modem. Just browsing and tapatalk on dark theme.
But, this should be in q&a section
Sent from my GT-N7000 using Tapatalk 2

What ROM is that?
Sent from my GT-N7000 using xda app-developers app

baz77 said:
this should be in q&a section
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Well tbh this is more of a discussion than a question that requires answering but whatever floats them mods' boats.
ZacDerbyshire said:
What ROM is that?
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I'm running imilka's incredible PA v0.5 rom using the latest cm9 stable kernel.

about 5.
ics with cf-root.

rom was xme latest gb, but had simmilar results on latest dbt,and open europe latest gb rom
edit I posted not for discussion, but for means to replicate, should someone want to
ps, result only thought ultra clean install with fresh install of everything, no restore of backups and such
ps2 learned hardway, make efs backup and safe across multiple locations so you have way back, as flashing different csc roms can damage efs easily and before you know it no service. Hacking your way back is costly, so backup efs and dont make same mistake as me.
Sent from my GT-N7000 using Tapatalk 2

5h10min of screen on time, using Rocket Rom with speedmod kernel, 40% brightness, power saving mode, no games, black/white/grey icons and wallpaper :good:

5 hrs continual use is pretty amazing! I didn't timed mine but I would guess mine is 4-4.5 hrs of continual use.

with CM9
and play Game ,about 2.5 h
without game and wifi about 5.5 to 6 h

7:40:39
7:40:39
Stock GB, minimal brightness, plane mode, continuous HD movie playback

p107r0 said:
7:40:39
Stock GB, minimal brightness, plane mode, continuous HD movie playback
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Nice, I was like what!? thats amazing But its with another battery and airplane mode on. how is it with both wifi and network on and browsing?
Sent from my GT-N7000 using Tapatalk 2

baz77 said:
Nice, I was like what!? thats amazing But its with another battery and airplane mode on. how is it with both wifi and network on and browsing?
Sent from my GT-N7000 using Tapatalk 2
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7:40 was on regular stock battery,
as for wifi/browsing - with (estimated) battery current of ca. 500mA, I wouldn't count on more than 5 hours

if mobile data is off ( 2g and 3g both ) and i use minimum brightness in 2g nw i get more than 5hrs of display on. but these days my phone is not going to deep sleep. need to fix this . using paranoiddroid

hem.acharya said:
if mobile data is off ( 2g and 3g both ) and i use minimum brightness in 2g nw i get more than 5hrs of display on. but these days my phone is not going to deep sleep. need to fix this . using paranoiddroid
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Which paranoid are you using cuz mine goes into deep sleep fine.

Sent from my GT-N7000 using xda app-developers app

If on screen for long time, does it effect the screen? Burn mark yellowish maybe?
Sent from my GT-N7000 using xda app-developers app

naimmkassim said:
If on screen for long time, does it effect the screen? Burn mark yellowish maybe?
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I don't think so.
Well I've never gotten anything.

On stock ics 4.0.4 using a stock battery, min brightness, mobile network 3g
currently 4hrs 14 mins with 48% battery left
total time on battery is 7hrs 55mins 47 secs

10 hrs while reading e-book on aldiko
with grey text on black background
7% juice left
3g and phone on

Flight from Atlanta to Orange county Ca. 3.7 hours. Plenty left. I never use the device screen on for hours on end unless couped up in a plane.

Nexus 7 Battery Life

Hi! I recently got a Nexus 7 and I am somewhat disappointed in the battery life. I am only getting around 3 hrs of battery life and is draining quickly while idle. The battery is also draining while being used while connected to my pc. I am using Jellybro rom along with Trinity Alpha 64. Can anyone recommend the best Rom/Kernel combination for battery life ? I read that Trinity is great for battery life so I'm doubting the Rom (however it works great on my Galaxy Nexus). As I dont always use the same things on my tablet I cant really test the different roms myself.
Thanks
Sent from my Galaxy Nexus using Tapatalk 2

I'm getting great battery life on my stock N7 :|
I tried it the other day, used it all day and it died after around 8-9hrs. Was tethering via bluetooth, brightness set to auto, and either played games, used FB messenger, or read Wall St Journal frequently throughout the day.
Sync and location enabled.
Oh and the N7 will probably discharge faster than your PC can charge it. Typical USB ports on a PC only output .5A of power. Chargers meant for tablets usually provide about 2A of power. So thats another issue.
Might I suggest running the N7 till it shuts itself off due to no battery, then letting it sit and charge overnight till its 100%?
Sent from my Nexus 7 using xda app-developers app

Thanks for the reply Can you please tell me the Screen on time ? Since then I switched to Paranoid Android so I'll how it goes but maybe the stock rom has a better battery life ?
Thanks
Sent from my Galaxy Nexus using Tapatalk 2

Last night I got 19.5 hours on battery with 7.5 hours screen time on paranoid android. I'd say its safe to say that...
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Hmm sadly I didnt take a screenshot when I did that 8-9hr run.
I'll unplug my tablet for today though and by tonight maybe I'll have some interesting results for ya.
Sent from my Nexus 7 using xda app-developers app

If its enough to make you mad then its prolly not right.
To say your doing in wrong would be a far shot but your tablet is definitely doing it wrong..lol. I was just saying the other night to my girl that I was super happy with the battery because it lasts all day for me. From 7am in the morning till 12 at night. Of course im not using it every waking moment but I do check it/use it as much as I would have normally used my phone. During work I am on wifi till about 430 and then from 430-8/9 while im in class im tethering using it almost the whole time, then when im home for the rest of the night I will be on wifi. The things I do vary from webbrowsing (reddit, xda, etc) emailing attachments, listening to google music and GPS/texting. (yes I use tablet talk which is why I rarely use my phone anymore except to setup tethering)
If you are having any issues with your battery I recommend to get a battery app to reset the stats and try again. If not return to stock then try that method again.. then if NOT return.

revamper said:
Last night I got 19.5 hours on battery with 7.5 hours screen time on paranoid android. I'd say its safe to say that...
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Click to collapse
Haha Thanks for the replies I'll see how it goes with Paranoid Android
Sent from my Galaxy Nexus using Tapatalk 2

modstorm said:
Haha Thanks for the replies I'll see how it goes with Paranoid Android
Sent from my Galaxy Nexus using Tapatalk 2
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Click to collapse
Just turn off your google account auto-sync and your battery life should increase dramatically. I use the power widget to toggle sync.

Okay here are some screenshots of my battery life... Not sure if its uploading properly though since im doing this through the app.....
EDIT: Looks like it didnt work... But basically I had about 20.5hrs of total battery time. Screen on for a total of 5.5hrs. Bluetooth on the entire time, WiFi on for about 6 hours.
Sent from my Nexus 7 using xda app-developers app

Nippero said:
I'm getting great battery life on my stock N7 :|
Oh and the N7 will probably discharge faster than your PC can charge it. Typical USB ports on a PC only output .5A of power. Chargers meant for tablets usually provide about 2A of power. So thats another issue.
Click to expand...
Click to collapse
My N7 discharges faster than the google provided AC mains charger can recharge it. That seems pretty pathetic to me. How is it for others?