Database Develop

[Question]Display drains Battery after flashing XXJPK for days

Hi experts here,
I am new i9000 user coming from G2.
I flashed XXJPK for days, found that my battery drops very fast.
I stop all data access at night and the battery still drops...
I found that the 'Display' uses > 80% !! (even when I slept for 8 hours)
Attached is the screen cap of my battery stats..
Do anyone has the same issue?

This is Android Development, not Questions & Answers! Please post in the right sections!

What have you installed after JPK? Task killer? Lag fix?
Mine is not doing that. I did a hard-reset yesterday, installed my apps (no task killer, no root, no lag fix) and disabled everything (WiFi, bluetooth, GPS, 3G, autosync). Battery did not drop even 1% in 6 hours.
Display should not take any battery if it's off. Maybe you have something that awakes the phone constantly. Check autorefresh on weather, e-mail, twitter, news feeds... I usally have that disabled or set to 8 hours minimum.

got the same problem here.. i do got the docrom (custom rom) ,auto killer installed and lagfix (OCLF v2+) it goes from 100% to about 60% in 9 houres.. without doing a thing.. on top of that i got juicedefender ultimate installed.. but it doesnt seem to help at all..

The problem is why the 'Display' uses > 80% while I off the screen for hours?

Got the same problem here. I just reverted back to jm8 (eclair 2.1) with takayuma Rom.. I think all froyo versions have battery draining issue

I think, you guys must make this and maybe fix battery issue:
Refreshing battery stats after Odin or flashing (important)
or me personal, for my Galaxy very helpfull was this HTC Desire methode:
[HOW TO] Calibrate Desire Battery
Regards

I'm having exactly same problem with you. My brightness is 75% even in sleep mode and it drains the battery. I guess thats the main culprit to solve my battery draining issue. I wonder why it happens to certain people, because some users only have 48% for brightness and their battery can last more than a day
** apparently using Eclair 2.1 doesn't solve the issue as my brightness is still 70% ... I've tried the batterystats.bin fix and same thing happens. Damn !

pcboyy said:
I'm having exactly same problem with you. My brightness is 75% even in sleep mode and it drains the battery. I guess thats the main culprit to solve my battery draining issue. I wonder why it happens to certain people, because some users only have 48% for brightness and their battery can last more than a day
** apparently using Eclair 2.1 doesn't solve the issue as my brightness is still 70% ... I've tried the batterystats.bin fix and same thing happens. Damn !
Click to expand...
Click to collapse
It's true. JM8 and the battery fix doesn't help.
But I found that when I turn my connection from 3G mode to Wifi mode, my battery drops only 10% overnight.
I think there is some problem in the 3G connection.
Do you think this is kernel related?

One way to keep the drain down is getting a black theme such as the Transparent theme and setting a black background. Because of the AMOLED screen black is basically 'pixel off'. It helps just a bit.
I have similar experiences with WiFi vs. 3G, 3G drains battery awfully fast whereas WiFi seems to be consuming significantly less power.

[Q] Battery Drain After Updated to Latest official Gingerbread firmware

The battery drains very fast even when I'm not really using it, it uses about 20% of electricity just for 9 hours of idle.
Does anyone have the same problem?

I am also on 2.3.3 and constantly draining the battery completely and charging it several hours past the green light to make the most of the battery, but I still have to kill WIFI and 3G to even get it through ONE day, and that's only standby.
Donno if it was better b4 i upgraded 'cos I only had 2.1 the first day.
Thinking of getting the 3rd-party 1750mA battery, ASAP.
Also hoping the good guys can Root this phone soon, and warriorvibhu makes a swirling fast SUnAaBh-Sense-Rom for it. That would be fantastic!

I absolutly can't say that i have the same problem - actually, my experience is just the opposite.
Try to folow the steps in this post.

Yes there is an issue with the Incredible S dialer using a high amount of battery even while idling. This issue has cropped up after the 2.3.3 update.
The DHD is experiencing a similar issue. No fixes yet. Probably a bug in the ROM.

I just can't understand it. Why can't HTC make firmware that doesn't crave so much power? Don't they betatest at all?
I've tried the jkolner-trick vigorously and got a few hours more, but still not accepting i can't have it on standby for more than 24h. It truly SUCKS!
SO longing for S-Off so i can get the HD-Rom. Damn HTC!!!

Try airplane mode during the night, i went from 10-15% to about 3% overnight.

I had the same issue
Resetting Battery Stats solved my problem.
http://forum.xda-developers.com/showpost.php?p=15095306&postcount=32

See this:
http://forum.xda-developers.com/showthread.php?t=1136372

[Q] please help! rooted Starbusrt Rom +1.4 overclock..screen using 80% of battery!

Hi guys,
after flashing the starburst rom and over clocking and several tries to calibrate the battery my battery is still draining a mile a minute. I used the battery calibration app....have let the battery fully drain and charge at least 5 times now and I still can't get back my battery life!
I'm thinking the root of the problem, well...when I go to settings than battery use it says the screen is using between 70-80% of the battery...I am assuming that what is sucking the life out of my battery but I have no idea how to fix it. my screen time out is at 30 seconds...brightness is almost as low as it can get. ITS DRIVING ME NUTS
I am assuming I calibrated the battery correctly cause it does not drain at all when the screen is locked.
please, any help or suggestions would be greatly appreciated, I am ready to rip my hair out!

I just opened battery calibration app its at 70% 4mv isn't it supposed to be like 4000mv? or is just abbreviated?

I just flashed a new rom and still having the same issue!

trying to calibrate the new rom using battery calibration and its barely charging...been stuck on 61% 4mv for about a half hour now..

is it possible that this problem is being caused because I installed the roms with ROM manager and not CWM?
I apologize for what questions may seem dumb...I am a noob....but i have searched relentlessly for answers on this specific problem here with out finding much yet.

disregard that last question..lol..u can see how badly this has my brain turned upside down

[Q] Specific Battery Question

I have noticed significant battery drain lately. When I first started using the Moto X I was getting 24-30 hours easily with moderate use. Generally I will only have 1-2 hours of screen time. Now with the same usage I am only getting 12-15. I have noticed that Android Kernal is the main offender, but don't know what that is.
Not Rooted
Screen brightness 50%-60%
Notifications turned off on all apps
Don't even have that many apps that I use
No gaming
I have attached screen shots from Gsam:
Battery Monitor
Screen Detail
App Sucker
kernal
Any help would be greatly appreciated.

Take a look at your wakelocks, time held awake, and times waking device. Also, are you in a weak signal area? Where I work I get crap reception, and my battery life sucks along with it.
Sent from my XT1060 Dev Edition

Does flashing many custom ROMs cause the battery life to reduce?

I've been flashing custom ROMs like crazy, like at least two every week. I've noticed that the battery backup has reduced drastically. Even after going back to the stock ROM. Earlier, I used to see a 1-2% drop in battery percentage at night, but now its 24-30%. Is it because of the heat, that the battery experiences after flashing and initialization and setup of the ROM, that there is reduced battery life?

Nope.