Database Users

Overnight battery drain?

Wondering what everyone's overnight battery drain is looking like. picked up mine on launch day and the first nights battery drain was only 9% but last nights battery drain was 27% i don't know if it was something i had running in the background or what. Wifi was also on both nights.

I've seen this type of issue but have not been able to pinpoint the true source of that big drain when its in sleep mode

Jsimon9633 said:
I've seen this type of issue but have not been able to pinpoint the true source of that big drain when its in sleep mode
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Applications. I'm sure of it.
I'm having the same exact issue.

Last night I went to bed with 11% and I woke up with 9% (7 hours of sleep).
The secret to almost 0 battery drain on your phone at night is to use juice defender + airplane mode. I set my juice defender's "night mode" for 1am - 6am, but you can mix that up based on your sleep schedule. Juice defender will disable data during that time.
I turn on airplane mode at night because nobody is going to be calling me when I'm sleeping. The only person that would is my fiance, and she sleeps next to me.
Juice defender almost helps battery life throughout the day. Also, make sure battery saving mode is checked under "display and sound settings." I've been experiencing phenomenal battery life so far. My 2nd charge went for 21 hours with 4 hours of screen on time.
I hope this helps

jim2point0 said:
Last night I went to bed with 11% and I woke up with 9% (7 hours of sleep).
The secret to almost 0 battery drain on your phone at night is to use juice defender + airplane mode. I set my juice defender's "night mode" for 1am - 6am, but you can mix that up based on your sleep schedule. Juice defender will disable data during that time.
I turn on airplane mode at night because nobody is going to be calling me when I'm sleeping. The only person that would is my fiance, and she sleeps next to me.
Juice defender almost helps battery life throughout the day. Also, make sure battery saving mode is checked under "display and sound settings." I've been experiencing phenomenal battery life so far. My 2nd charge went for 21 hours with 4 hours of screen on time.
I hope this helps
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yea i just started using juice defender got the paid version this morning so we will see how it goes tonight. i also have advanced task killer now which will kill no essential apps/functions when i turn the screen off. Hopefully battery life increases over my old palm pre lol. It's also doesn't help that at work i only get 0-2 bars inside so that kinda sucks my battery life down alot.

2.0t03speed said:
yea i just started using juice defender got the paid version this morning so we will see how it goes tonight. i also have advanced task killer now which will kill no essential apps/functions when i turn the screen off. Hopefully battery life increases over my old palm pre lol. It's also doesn't help that at work i only get 0-2 bars inside so that kinda sucks my battery life down alot.
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Hmm.. Must be what is happening to me. I always have 2 bars where I live.

i've got to wonder if inaccurate battery level reporting isn't part of the issue, and i don't just mean the battery icon in the top notification bar
some other posters have remarked how much life they had even after the low battery warning notification popped up. http://forum.xda-developers.com/showthread.php?t=770207
after the first few weeks of use, once my battery had settle down, i was seeing 1-2% drain at night after taking mine off the charger at 11:00PM
i even took to putting it in airplane mode & turning off GPS - and it didn't affect the 1-2% drain
but every odd day it'll show 8 to 11% drain after a full charge and putting it to sleep at 11:00PM
the same with the radio signal strength indication given in settings - again, not the signal strength bars in the notification. When my signal strength is showing 0 & 0 asus, i can still make calls with no drop outs etc

look I understand and agree that juice defender and airplane mode help but lets be honest here
not all of us want to disable the phone to save battery. standby should not take this much battery even without the damn defender and schmender
something is going on thats draining battery
my evo did not do this at all even without defender or airplane mode

larryccf said:
some other posters have remarked how much life they had even after the low battery warning notification popped up. http://forum.xda-developers.com/showthread.php?t=770207
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This is true. Once the battery hits low levels, it must kick into super battery saver mode because it hangs in there like a champ. I was trying to murder the last of my battery so I could completely drain it all the way. At 6% I just loaded up a movie because that's a good battery drainer. It took an hour to hit 0%, and even then it didn't shut off.
Jsimon9633 said:
my evo did not do this at all even without defender or airplane mode
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Huh. I found that my EVO drained more battery life when idle than my Epic. Cell standby will kill your phone when idle if you don't have great signal. This is the reason behind airplane mode. Task killers will also drain your battery. Anything that runs in the background, really.

I'm running systempanel to monitor eerything and I noticed that the phones cpu is at 30% when sleeping with occasional spikes every few hours to 100%.
I also run tasker, and then both run in background...
Sent from my SPH-D700 using XDA App

I just worked this morning from 10pm to 7:30am. Night shift at Wal-Mart. Went to work with 96% and ran Pandora all night, facebook, texting, net on breaks. Got home at 12%. About 10 hours of good use. I can live with that. But that's an example there.
Sent from my SPH-D700 using XDA App

Phone uses 50% in standby for 11 hours

I leave my phone in the car while I'm in the police academy and that's from 1000-2100, so it's about 11 hours. I might go check emails during lunch for about 10 mins but that's it.
by the end of the 11 hours, the battery is at about 50-60%
is that normal?
oh, tested it with noLED app, the battery was at 28%, so it uses about 20-30 more battery

Info that would be nice to have so others can help... Are you running a completely stock rom and kernel? What kind of signal strength do you get there? What is your TWS? Do you perform the 'Airplane Mode' fix on each boot? Do you kill the DRM service each boot? It would also help to have details like what rom and kernel you are running if not stock.
My best battery life that I can recall occured when running the Epic Experience Rom 1.1.06 and the Andromeda 1.4.0 kernel. When at home with WiFi on, 0% TWS (solid signal from the tower), I would lose about 1-2% per hour with no use, and I can recall having it last for almost 2 full days with light usage.
Another question, if your leaving it in your car anyway, why dont you just turn it off? Then it wont use any of your battery.
Anyway, in my limited experience, 5% per hour on a completely stock phone is about normal, and the only way I was able to increase it even a little was to install Juice Defender and have it kill any data access when the screen was off. This was before I rooted my phone, and learned anything about the 'Airplane Mode' fix (hold power button and turn on Airplane mode for about 10 seconds, then turn it back off. This reduces your TWS (TimeWithoutSignal) percentage) and killing the DRM service through the 'Settings->Applications->Running Services'

I lose under a percent an hour when the phone is sitting idle. Also, if I had to leave the phone for 11 hours, I would put it into airplane mode, or rather have juicedefender do it automatically. That would mean I would be losing under a half percent an hour.

That sounds about right from my perspective. Everyone that complains about the Epic having terrible battery life doesn't know how to manage their phone settings.
Personally, I use my phone often at work (ie., games, texts, and emails) and after 12.5 hours my phone probably has 60%-75% battery left. I do this by placing my phone in airplane mode and turning on my wifi. Using Google Voice and my gmail app I get all the information I want / need. On top of that I play games and surf the internet on my phone.
Anyway, I find your results typical from my experiences.

[Q] Cell Standby Battery Drain

I am experiencing extremely bad battery drain while my hd2 is off. I have a brand new factory battery, and am running a gingerbread edition of Nandroid. Cell standby seams to be the culprit. My drains about 15 percent an hour when left in normal mode, a. k. a. not air plain or data disabled mode. When I enable air plain mode, the standby usage decreases to 2%. I live in an area that t-mobile rates as excellent and is partially covered by their 4g network. what can I do beside leaving my phone in air plain mode (defeating the point of a phone, because you won't know when people call or text you) to actually get usable battery life?
The attached picture is after a standard day where the phone was asleep for the majority of the time.

Your rom ?

you can try adjust the brightness,switch to 2g,disable data in background.

Try downloading battery monitor widget to find your mah drain. Mine battery usage is usually 60% display
Sent from my HD2 using XDA App

0% drain in night

I'm quite staggered to state that my S3 haven't used a single % of battery overnight, I left my phone at 66% and in morning my jaw just dropped by looking at battery meter it was at 66% i thought it was stuck or hanged so i restarted my phone pulled the battery out and waited for 5 mins and turned it on again and voila it was at 65%(1% lost due to booting)
also my S3 is Made In Vietnam

Isn't this a good thing? Phones don't really use a lot of power when on idle like this. As long as u have a good signal and the radios not trying to pick a signal the battery doesn't drain much. I've left my g2 overnight several times and it hasn't gone down either
Sent from my HTC Vision using XDA

Yes its a good thing however my last droid eats 15-20 % battery in night which is bad.

Auto-sync on? 3G/wifi/airplane mode? Wouldn't mind having tiny idle drain myself

Phone is set on 2G network(not on Airplane mode) with wifi and auto sync OFF

I also noticed my SGS3 drains very little at night. However, when idling at daytime it does drain more battery (using System Panel to monitor battery levels).
Perhaps there is some power saving feature that put the phone in a deeper sleep-mode at night? Automatically disabling auto-sync etc?

Closed, we have a thread right here for initial reviews/discussion.
Thank you.

Battery Problem With Standby Time (Help)

I have Problem With Standby Time .....My Battery After 12 Hours Standby Have 50% Drop.....I install Stock Rom But Itsnt Fix...Please Help Me:crying:
( I do wipe cash and wipe battey and calibrate)

new ugsrii
how long your battery used? if >2-year heavy use, could well be battery degrade. no solution except for buying a new one. (symptom: battery charge sudden drop, like 50% -> 20%).

nostupidthing said:
how long your battery used? if >2-year heavy use, could well be battery degrade. no solution except for buying a new one. (symptom: battery charge sudden drop, like 50% -> 20%).
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For me battery drops can sometimes happen when I don't charge battery to 100% - so it's good idea to always charge to full.

First of all you should check if your battery is going into deep sleep mode. You can do that by installing Bettery Battery Stats, and leaving your phone idle with the screen off for some time. You should read the forum post to understand how it works. If after leaving your phone on "stand-by" you realize that it's not going into Deep Sleep mode, then you should find out what is keeping your phone awake.
I used to have the same situation as you, and it turned out that I had set the WiFi Sleep Policy in Viber to override the Roms setting, and consequently leaving my WiFi always on (which prevents your phone from sleeping). After fixing the issue in Viber my phone now turns WiFi off after 15 minutes of leaving my phone idle.
Now unless your battery is actually dying on you, I'm sure you can get a better battery life. I am using Tasker to program my phone to turn WiFi off when I turn off my screen, and then turn it on for 1 minute every 15 minutes during the day, and at nights it does the same thing but with an interval of 1 hour and half. There are apps in the Play Store that do this too, I've tried these both, and they work as they should, and they can even control your Data connection
Green power
Deep Sleep Battery Saver
All in all I've been losing an average of 1.7% during the day, and 0.7% and 1.2% per night. My battery currently lasts about 2 days on one charge. This is all assuming it is actually your WiFi that's preventing your phone from sleeping, I just figured I'd share my experience in case it is in fact that; the important thing being that you could probably get the same results as I have (or even better, considering your battery isn't busted) if your phone is actually going into Deep Sleep.