Database Develop

Battery Life- An experiment

Anderson Did an experiment to see how far the battery life can last on normal usage.The battery power was monitored using the app "Battery Monitory Widget"
And he came to the conclusion that The battery life could well last more than 2 days if you use just the communication tools (whatsapp, Facebook, sms) on a 2G network. With heavy data usage, the battery power got zapped out rather quickly.
You can have a look at the full experiment
optimus2x.net/index.php?topic=907.0

I'm kind of experimenting in this too..
Today i unplugged my phone this morning (6am) and its dropped to 97% now @ (3pm).
So thats only 3% in 9 hours..
I use Facebook widget which updates + Twitter widget same setting (both auto update every hour)
I sent about 10 text messages (also received about that amount) and made 1 phone call (about 3 minutes)
All this on 3G network, i dont save on 2G/3G setting

2G coverage is very suboptimal in Switzerland, especially if you are using a Sunrise.ch contract. Their 2G performance with Edge is about 100kbit/s for download. This is a joke. I am not able to use a phone with 2G and enjoy it. Therefore whenever possible I have to switch on 3G (which is of course also not great, but at least it is much faster).
Therefore, 2G is not an option at all for me.

I am running stock on mine and I seem to at least have found some form of "battery" drain. Trying to reproduce the usage.
But I charged my phone fully, and then restarted it and "at the moment" it is holding its power sorta alright. But when I use it normally it lasts like 7-8 hours before needing a recharge, even if its just laying on my desk and not being touched.
Ok testings done. These figures are after a reboot and where I have more or less left the phone laying on my table only having a short call, and otherwise reading a few emails and responding to a few texts. The entire time autosync was on, as well as 3G Data.
1H30M -08%
5H30M -30%
8H20M -50%
11H00M -68%
12H15M -74%
13H08M -79%
14H15M -85%
15H20M -93%
At which point I stopped the test and then put my phone in the charger. Tomorrow once it is done charging I will start up all the stuff I normally run on it, charge it to full and see how well it does there when I am not using the phone at all. Quite frankly I expect a large difference simply because that is what I have seen, but starting program and then exiting said programs and leaving the phone on standby "should" not impact consumption in my view at least.

I think there is something bad with my battery, because Battery Monitor Widget says that my battery is a 1200 not 1500, without doing nothing at all it lose 1% per hour and suddenly in 10mins drops like 6%, so in 8hs aprox from 86% goes to 68% (the phone doing nothing)
I have 3G always active, whatsapp and gmail, just that. Will try to do the test again with 2G, but what I don´t understand is why it says 1200 instead 1500.
Should I get a new battery? could be deffective this one?

snakewar said:
I think there is something bad with my battery, because Battery Monitor Widget says that my battery is a 1200 not 1500, without doing nothing at all it lose 1% per hour and suddenly in 10mins drops like 6%, so in 8hs aprox from 86% goes to 68% (the phone doing nothing)
I have 3G always active, whatsapp and gmail, just that. Will try to do the test again with 2G, but what I don´t understand is why it says 1200 instead 1500.
Should I get a new battery? could be deffective this one?
Click to expand...
Click to collapse
You define your battery size in settings, 1200 mAh is default.
Sent from my LG-P990 using XDA Premium App

What rom is best on battery?
Sent from my LG-P990 using Tapatalk

reidar.ostrem said:
You define your battery size in settings, 1200 mAh is default.
Sent from my LG-P990 using XDA Premium App
Click to expand...
Click to collapse
OMG I feel kinda dumb now, thank you so much for your reply.
I can´t understand why it doesn´t last my battery.

Sckank said:
What rom is best on battery?
Sent from my LG-P990 using Tapatalk
Click to expand...
Click to collapse
CM7 is the best for me

CM7 seems to be really good for me, i used 28% of it with medium-heavy use (no games, but wifi always on and a lot of playing about with) in 5 hours and at night i lost 3% in 7 hours sleep with 3G on. Not fully stable but seems better than sacrificing the smartness of my smartphone.

Lost 0% 2 days ago when sleeping for 9-10 hours i think
Today i lost 1% when sleeping for 9-10 hours
I am using 2g since i don't have 3g connection in my house.
It's a bit unstable but battery improvement is more important for me then some little bugs

snakewar said:
OMG I feel kinda dumb now, thank you so much for your reply.
I can´t understand why it doesn´t last my battery.
Click to expand...
Click to collapse
No problem .
The O2X does not have good battery management, so it will drain.. getting usable results with mcr r15
Sent from my LG-P990 using XDA Premium App

reidar.ostrem said:
No problem .
The O2X does not have good battery management, so it will drain.. getting usable results with mcr r15
Not realy stil not much of a difference froam stock
Sent from my LG-P990 using XDA Premium App
Click to expand...
Click to collapse
Sent from my Optimus 2X using XDA App

Battery power for LG Optimus 2x

Hello all!
I am new to the forum so I hope make it without any errors.
I bought the Optimus 2x cellphone last week whith the hope of getting the good one (the one without freezes and black screens) fortunately the cell worked very nicely. I updated to gingerbread and I feel it very good. But I have the good known problem of battery consumption.
Now I have a battery related question. After the update I charged the phone and get the battery indicator stuck at 100% I rooted the phone, installed Battery Calibration and calibrated the phone (left the battery to reach 0% then fully charged to 100% hit calibrate and left the telephone fully discharge again)
The issue is that when the thelephone was at 100% the voltage indicator of the battery calibration was in 4100 mV and here comes the weird thing. When reached 0% the voltage indicator was saying 2000mV.
My question is if this values are right. Someone with good battery duration and the Battery calibration installed could tell me the correct values? I thought that the phone shut down when battery was down to 0 mV but maybe the problem is that my battery is just using "half" battery.
Sorry for my english. I am not native english speaker.
Any help will be highly appreciated.
Thanks

That is voltage, 3300mv = 3.3 volts.
Fully charged the battery would be at 4180mv, fully discharged is around 3200mv usually, or a bit higher.
The phone shuts off when the battery gets below the usable range, which I believe is slightly above 3000mv.
So yes a range of 3.3 to 4.2 volts is perfectly normal for a 3.7v battery.
Sent from my Optimus 2X using Tapatalk 2

Hi! Thanks for your reply. So I think I should get used to it. My battery doesnt last more than 12 hours of my regular use. A some internet browsing and some messaging. No music, videos, or games.
Someone recommends the extended batteries of 3500 mAh for this phone? That will make the phone last more time?
Thanks in advance!

Reaper511989 said:
Hi! Thanks for your reply. So I think I should get used to it. My battery doesnt last more than 12 hours of my regular use. A some internet browsing and some messaging. No music, videos, or games.
Someone recommends the extended batteries of 3500 mAh for this phone? That will make the phone last more time?
Thanks in advance!
Click to expand...
Click to collapse
Hi Reaper511989, I have bought an extended battery from HERE. It is fatter, but not ugly. And the battery lasts a lot longer. I use it when I'm travelling. I have no idea where in the world you are, but the battery was from a company in the UK.
Have fun. Anil

Huge Battery drain on DjangoManouche/Guestekrnl
Hi,
I was on CM7 kang of temasek and I decided to flash a stockbased rom.
Now I'm on :
DjangoManouche 1.2 rom
Guestekrnl V1.6.1
BB V20Q with ril
I am using Go launcher which comes with the rom
The battery drain is incredibly huge, 8 hours tops with very little use
Anybody some ideas ?

your lucky. i get 6. if im playing 3 albums of mp3's during work. nothing on. just 2g.
imagine if i turned on gps,wireless,bt 3g/4g ahhhh . (cant use fone how its sposed to be used) have ot turn it DOWN a notch. its to HUNGRY on juice. seriously lookin @ one of those MUGEN batteries.

6 hours is just wrong... in the most intense usage you should get 2 hours of screen ON time.. Wifi with 2g on trolling forums with browser/tapatalk should be 4 hrs.
Sent from my Optimus 2X using Tapatalk 2

R0B3RTF1SH3R said:
your lucky. i get 6. if im playing 3 albums of mp3's during work. nothing on. just 2g.
imagine if i turned on gps,wireless,bt 3g/4g ahhhh . (cant use fone how its sposed to be used) have ot turn it DOWN a notch. its to HUNGRY on juice. seriously lookin @ one of those MUGEN batteries.
Click to expand...
Click to collapse
6hours listening to music is pretty normal. If you want longer battery live, stop using the device.
Sent from my HTC Wildfire using XDA

grognaz said:
6hours listening to music is pretty normal. If you want longer battery live, stop using the device.
Sent from my HTC Wildfire using XDA
Click to expand...
Click to collapse
That doesn't give you more battery life.. sigh
Sent from my Optimus 2X using Tapatalk 2

Mungulz said:
That doesn't give you more battery life.. sigh
Sent from my Optimus 2X using Tapatalk 2
Click to expand...
Click to collapse
Well in that case you might wanna repair your device since you seem to have the same issue with all roms. That should not be the case that it uses the same amount of battery without using it, especially if no app is loading the cpu....
Sent from my HTC Wildfire using XDA

well actually. cm7 i got about 5-6 hours batt life, cm9 i got no more than 8, GB (stock rom) can usually go from 5-8 hours. but with no bugs. so i am back on GB.
so i dont think device is broken/dodgy since the batt life fluctuates a little. depending on the rom.
my main issue is, ive been reading about ppl using froyo and going to GB and having mass battery drain. now im thinking about going to froyo.

R0B3RTF1SH3R said:
well actually. cm7 i got about 5-6 hours batt life, cm9 i got no more than 8, GB (stock rom) can usually go from 5-8 hours. but with no bugs. so i am back on GB.
so i dont think device is broken/dodgy since the batt life fluctuates a little. depending on the rom.
my main issue is, ive been reading about ppl using froyo and going to GB and having mass battery drain. now im thinking about going to froyo.
Click to expand...
Click to collapse
Could you please share your findings? Since I'm having the same problem and started thinking about returning to stock as well.

[Q] Bad Battery Life?

Is the O4X's battery life as bad as gsmarena is saying? Just a little over 4 hours of video playback and 4 hours of web browsing?

If you read the comments of the blog article on it, you will see that there is a lot of discussion over the brightness.
By comparison to the SGS3 and One X, the Optiums has a much brighter screen which will mean a lower battery life. Of course if they set all the phones to the same actual brightness (not percentage) the numbers would be different.
I am currently waiting delivery of my 4X, but after I have conditioned the battery (let the handset configure itself to the battery), I'll definitely be seeing what its capable of.

Alright thanks, I hope you'll be able to get back to this thread when you find out more.

I've had mine since friday and I think I've charged it about 3 or 4 times now and the battery life is getting better. It lasted only about 2 hours when I first charged it and started it for the first time. But I was using it constantly.
Today I started it in the morning (fully charged) before going to work and now, 10 pm, it's been on for about 16 hours and I have 40% left. Data have been on all day and I've been signed in to Google Talk all day, I've browsed the web for a total of aprox. 1 hour, used the camera, tested the GPS and been chatting with a friend on talk. So I'm pretty satisfied so far.
It's better than my O2X.

crewol said:
I've had mine since friday and I think I've charged it about 3 or 4 times now and the battery life is getting better. It lasted only about 2 hours when I first charged it and started it for the first time. But I was using it constantly.
Today I started it in the morning (fully charged) before going to work and now, 10 pm, it's been on for about 16 hours and I have 40% left. Data have been on all day and I've been signed in to Google Talk all day, I've browsed the web for a total of aprox. 1 hour, used the camera, tested the GPS and been chatting with a friend on talk. So I'm pretty satisfied so far.
It's better than my O2X.
Click to expand...
Click to collapse
That's good to hear. How many hours was the screen on?

I'm not sure unfortunately. But i would say between 2-4 hours.
Edit: okay it was a little less than I thought. The. Battery usage in settings says the screen have been on for two and a half hours. And that's including the time I have used after 40%. I'm down to 25% now.

My Battery lasts after a few cycles all over two Days with medium Usage (No gaming - WA, FB, eMail)........

i ca go for 1 day, with a bit gaming and usual use.

I have slightly longer battery life on my 4X HD than on my Nexus S when using the phones in the same way (casual use). But I think there is room for improvment on the battery life with more optimized software either from LG or when we start seeing custom roms for this device.

I charged mine to 100% and just dropped 8% in 25 minutes, 20 minutes of that was driving and not using the phone, no Bluetooth or anything like that. The battery life is shocking and can't wait for extended ones to become available. Besides that I truly love this phone
Sent from my LG-P880 using xda premium

ianford10 said:
I charged mine to 100% and just dropped 8% in 25 minutes, 20 minutes of that was driving and not using the phone, no Bluetooth or anything like that. The battery life is shocking and can't wait for extended ones to become available. Besides that I truly love this phone
Sent from my LG-P880 using xda premium
Click to expand...
Click to collapse
How many complete charge cycles have you done?
Sent from my LG-P880 using xda app-developers app

When I got my p880 I did 3 battery cycles, and I could only get about 8 hours of standby alone, no other use at all. I then did a factory reset and formatting of the memory card, which I hadn't done when I switched from my old SE X8. Now my p880 can easily go more than a day with some gaming, calls, browsing etc. My guess is that old android files on the memory card was the reason for the bad battery life. No expert though, maybe someone else has a better idea.
Today I tried the Chrome browser, and it really drained the battery. Something like 20% after browsing for 15 mins. Anybody else have experience with this?
Overall I'm really happy with this phone, great screen, fluid operation, good battery.

I've had battery drainage issues with the chrome browser as well. Even in stand-by the browser would drain the battery. It has only happened like two times for me in the four weeks i've had the phone, so not a biggy but still something you should be aware of, if you experience battery drainage issues
Sent from my LG-P880 using xda app-developers app

alexp999 said:
How many complete charge cycles have you done?
Sent from my LG-P880 using xda app-developers app
Click to expand...
Click to collapse
I keep topping it up as I run most of my business from my phone so need it to have lots of juice in it. Today I'm going to completely drain it so it turns off then fully charge it again and see what happens
Sent from my LG-P880 using xda premium

Battery life on 4.1.2

Hello all,
After updating I am getting less battery. I am totally stock. Anyone on the same boat? Share your thoughts.
Sent from my Nexus 7 using xda app-developers app

Well, Im happy, before around 4 hours, now 5. :thumbdown:
Sent from my Nexus 7 using Tapatalk 2

Mine is better
With moderate use* I went from 18 to 22 hours. I am happy...
* My N7 is not my daily driver, my pc still is... So it sits idle more often than not...

I'm totaly happy with the battery... getting at least a day and a half with normal use.

after updating its definitely drainng fast.

No drain here. I get 10-12 hours a day with heavy use and easily a day with moderate usage. Was roughly the same before update as well.
Sent from my Nexus 7 using Tapatalk 2

First of all hello everyone
Yeah I've literally only had my Nexus 7 a matter of a week but I can tell the difference between the battery per and post update. It seems go drain a lot quicker!
Any tips on how to save battery and keep it for as long as possible bar the obvious app killer etc...
Sent from my Nexus 7 using xda app-developers app

If anything, mine has got slightly better. Used to have less than 18% by 8pm, now its more like 25%. I use it pretty much all day for YouTube, Engadget, Flipboard, Tapatalk, Chrome, music and a couple of hours of games.
Sent from my Nexus 7 using Tapatalk 2

happy ever after...Lowl I have same battery life here..no difference

Battery life to me is good, what sucks is the charging time, damn

Rody2k6 said:
Battery life to me is good, what sucks is the charging time, damn
Click to expand...
Click to collapse
4326mAh battery, 2A charger, 2.1 hours theoretically. Realistically, 2.5-3.0 if pretty much empty.
If you're using a non standard cable or charger, who knows what the charger is actually outputting. If you're charging from your computer USB Port, that's 500mAh, so 8.6+ hours. Some random phone charger, probably 1000mAh, 4.3+ hours, etc.

The brightness of the display adds to some of the drain I notice, when possible I keep mine somewhat on the dimside, obviously if I'm in an area of bright light and it hard to see then I'll crank up the brightness.

Can't complain about battery usage.. It's amazingly energy efficient even on a stock kernel considering the horsepower this thing has.. I average 20hrs or so with moderate to heavy usage.

styckx said:
Can't complain about battery usage.. It's amazingly energy efficient even on a stock kernel considering the horsepower this thing has.. I average 20hrs or so with moderate to heavy usage.
Click to expand...
Click to collapse
Check this out, if you guys still complaining
Sent from my Nexus 7 using xda app-developers app

I am very satisfied with battery life. 2 and a half days with 4,5 hours of screen on. IMHO not bad at all.

I'm getting 7.1hrs non stop. Games, movies, social apps, chats, YouTube literally non stop. :beer:
Sent from my Nexus 7 using Tapatalk 2

I think battery life is pretty good

I've had really bad drains since 4.1.2. I think I've narrowed it down to an issue with Google Play. I've noticed it several times - Very good battery life, but then it will go down fast, even when sitting unused. If I check battery usage, Google Play is always number one with >50% of the use.
If I force close GP, all will be well for about a day, but eventually it happens again.

I also felt it, but only by that much...not too obvious. From full charge, after only night idle, drop 3 percent compare to last time 1 or 2 percent
Sent from my Nexus 7 using xda app-developers app

battery life
Hallo!
Same problem, battery drain is faster, with normal use 12 hours (before 17) and when charging phone it's just 99%. With factory reset same resoult. Now I try without all gps conections.
Anyone have good solution?

Battery on my galaxy s3lte sucks

I recently bought my s3 new and i'm disappointed in the batterylife.
Yesterday I fully charged my fone before i went to work and put it unused in my pocket and by break time more then 68% of my battery was gone i had only 32% left of battery life.
In total my fone used up to 90% off batterylife without being used. Anyone any ideas???
Sent from my GT-I9305 using xda premium

rayenvs said:
I recently bought my s3 new and i'm disappointed in the batterylife.
Yesterday I fully charged my fone before i went to work and put it unused in my pocket and by break time more then 68% of my battery was gone i had only 32% left of battery life.
In total my fone used up to 90% off batterylife without being used. Anyone any ideas???
Sent from my GT-I9305 using xda premium
Click to expand...
Click to collapse
Millions of battery posts on here read them for fixes .
First is to buy Better Battery Stats and run that for a day looking for wakelocks .
jje

See these links can help 1,2,3

JJEgan said:
Millions of battery posts on here read them for fixes .
First is to buy Better Battery Stats and run that for a day looking for wakelocks .
jje
Click to expand...
Click to collapse
You can find an alternative for Better battery stats and look for wakelock.
About the battery, after you found your wakelock and stop't them you will love it.

fotbal5 said:
You can't find an alternative for Better battery stats
Click to expand...
Click to collapse
you mean you CAN?

I Had the same issue with mine. Couldn't find anything causing the drain. In the end I got the samsung 3000mah battery and cover. A little bit thicker and heavier but man does the battery last way longer

Same here can't find the root of the problem
Got a external charger...
Sent from my GT-I9305 using Tapatalk 2

My battery life sucked till I installed boeflla v12.7a beta. I used to run out of battery each day with every other kernel I tried.
I'm now on v12 stable and battery life is still great. I have undervolted cpu and gpu by 0.25v and using pegasusq moderate governor.
Sent from my GT-I9305 using xda app-developers app