Develop Bugs

Battery Drain

Hi All,
When i look into (almost) all roms i see the problem with the battery drain problem.
To bad i do not have the knowledge to find out what to do.
But i think that some smart developers work together to find a solution about this battery drain problem.
So that's why i start this thread so we can discuss this

raiz said:
AdamG's Official Froyo HTC Sense might hold the key to this since it seems to give about 2 days battery performance with the original battery unlike any other rom.
Click to expand...
Click to collapse
It would be great if he could share the knowledge
I am using LeeDroid 1.4c and I too experience battery drain issues...

Someone tried this one http://forum.xda-developers.com/showpost.php?p=7170484&postcount=173 ?

There's a really good battery life on the OD 2.3 ROM Love it!
/CK
Sent from my HTC Desire using XDA App

Café King said:
There's a really good battery life on the OD 2.3 ROM Love it!
/CK
Sent from my HTC Desire using XDA App
Click to expand...
Click to collapse
Thanks, but i don't like the interface.. want have the sense feeling

Drain
Tested a lot of roms with froyo and sense. The roms based on 2.06 base are draining relative more then the roms based on 2.04.
Above is not scientificly tested.

Charge to 100% , go to recovery , advanced , wipe battery stats. Enjoy greater baterry life
Sent from my HTC Desire using Tapatalk

I had NONE battery drain problems on any of ROMS 2.1 or 2.2, and i did try alot of them.
Maybe theres something wrong with your phone itself (battery).
But definetly try wipe battery stats in recovery.

Since 08:00 morning had WiFi on.. network Data of... and now 12:02 battery is now 90%. DId have play with config the Tasker Tool (Great app).
Tomorrow i will do the test again but then with Network Data on and WiFi off.

raiz said:
AdamG's Official Froyo HTC Sense might hold the key to this since it seems to give about 2 days battery performance with the original battery unlike any other rom.
Click to expand...
Click to collapse
Yup, that ROM has the best battery life by far...
Sent from my HTC Desire using XDA App

people are having mixed results on the battery perfermance of adam's sensefroyo rom. i experienced a poorer battery life compared to eclair (i used Amer_v4 and the battery was excellent) but can still manage to last a full day usually. haven't tried out the froyo roms though.
ryanrich said:
Yup, that ROM has the best battery life by far...
Sent from my HTC Desire using XDA App
Click to expand...
Click to collapse
btw aren't you're using opendesire?

I've changed about 8 roms, mostly used 4, but can't say there was a huge difference between them. 2 days of normal use, 1 day of heavy use.
Possibly shadowfrost and DeFrost 2.4 had the best battery life and I had the fastest kernel installed...
I would think that - some isolated problem aside - mostly it has to do with some applications/settings

Charge to 100% , go to recovery , advanced , wipe battery stats. Enjoy greater baterry life
Sent from my HTC Desire using Tapatalk
Click to expand...
Click to collapse
Any ideea why?
Sent from my HTC Desire using XDA App

andycted said:
I've changed about 8 roms, mostly used 4, but can't say there was a huge difference between them. 2 days of normal use, 1 day of heavy use.
Possibly shadowfrost and DeFrost 2.4 had the best battery life and I had the fastest kernel installed...
I would think that - some isolated problem aside - mostly it has to do with some applications/settings
Click to expand...
Click to collapse
sometimes my E-Mail application is consuming most of the cpu. It keeps the cpu at max frequency. Even if i try to end the taks with the app "system panel" it wont solve the problem. I have to go into the app and make a manual sync.
i also found out that automatic brightness is using loads of battery. since i set it to static I'm experiencing almost 2 days of battery life with moderate use.
I'm on Defrost 2.1

Hello again everybody,
Yesterday whole day online by WiFi. Using phone couple of hours and my Maildroid Email was active without prevent sleep mode.
Battery was empty after almost 17hours. (+/- 5% every hour)
Today. Wifi on. Maildroid now with prevent sleep mode ON.
Have unplugged the phone 4 hours ago and battery is at 75%
Tomorrow i will test this with Network Data on.. and without prevent sleep mode of Maildroid. And day after with prevent sleep mode.
I know for sure.. the battery will drain very vast for both situations...
BUT Ill let you know
EDIT 26-07-2010: Battery was empty tonight on 1:30.
NOW I do the whole test again but now with network data on and WiFi off

Ive had the opportunity to own a Nexus One at launch and a HTC Desire...I always found Android OS to be the issue whenever i had excessive battery drain.
Ive found my issue to center around the OS 'calling home to sync' (whether 'sync' option is selected or not)Initially, the problem was resolved by deleting all my sync funtions...but that was obviously not practical........ so now I keep my GSM data connection running and I get about 2.5 days on Open Desire (non HTC Sense).
AdamG seems like the guy who knows what hes talking about - His changelogs for OpenDesire actually hint at him having done some battery drain tweaking...whatever he did, he has definitely fixed it
Cheers
Oz

I've tried so many ROMS in the past few weeks to try to solve battery drain issues. On some, I could almost see the percentage dropping as I looked at the home screen! I even bought a new battery thinking I might have killed the original.
OpenDesire does seem to be the way forward re this problem if you're intent on the HAVS kernel. OD2.3a gave me almost two days of varied use.
However, and I know this is going backwards, an earlier DeFrost - the 2.1, is brilliant for me. I'm now at two days since unplug and still at an unbelievable 45% - yes, I know, I thought it was broke as well! For now, I'm sticking with this one. Everything I want works and I don't have to carry a spare battery in my pocket when I go out.
Hope this is of some help. Don't despair. You will find the one for you.
Cheers

I don't get why everyone says they have such a issue with battery.
I get about 2.5-4 days of use with DeFrost 2.2 and have done about so since DeFrost 0.9. I've had it up around five days once.
How are you actually using your phones?
It's not a "Froyo" issue.

sckc23 said:
people are having mixed results on the battery perfermance of adam's sensefroyo rom. i experienced a poorer battery life compared to eclair (i used Amer_v4 and the battery was excellent) but can still manage to last a full day usually. haven't tried out the froyo roms though.
btw aren't you're using opendesire?
Click to expand...
Click to collapse
Switched back because I had terrible battery life on OD 2.3a and couldn't see why...
Sent from my HTC Desire using XDA App

Daelyn said:
I don't get why everyone says they have such a issue with battery.
I get about 2.5-4 days of use with DeFrost 2.2 and have done about so since DeFrost 0.9. I've had it up around five days once.
How are you actually using your phones?
It's not a "Froyo" issue.
Click to expand...
Click to collapse
It's very interesting to me how are YOU using your phone?
Come on, 4 days ? When i talk about 30m to 1h each day and using a phone little bit, i have at least 30-40% down.
u mean u only drain about 25% each day? are u actually using your phone ? wifi, calls, 3g ? or u have a expensive pocket toy just to show to your friends ?

[Q] G2 ROM on Desire Z = Lower Battery Life?

Guys,
I've been jumping between ROMs since rooting my phone last week and one thing I've noticed is that my battery life takes a big hit when I'm using the G2 ROM.
You'd think that since it's a lot closer to stock Froyo than the Bell Desire Z ROM it would have better battery life, but that not what I'm seeing.
With both ROMs it seems that they will stay at 100% for a two or three hours and then start coming down - however it's much more dramatic with the G2 ROM and it seems as though it's battery drain gets accelerated.
Has anyone else noticed this?

vro25 said:
Guys,
I've been jumping between ROMs since rooting my phone last week and one thing I've noticed is that my battery life takes a big hit when I'm using the G2 ROM.
You'd think that since it's a lot closer to stock Froyo than the Bell Desire Z ROM it would have better battery life, but that not what I'm seeing.
With both ROMs it seems that they will stay at 100% for a two or three hours and then start coming down - however it's much more dramatic with the G2 ROM and it seems as though it's battery drain gets accelerated.
Has anyone else noticed this?
Click to expand...
Click to collapse
yep,
i have noticed this too,
try an interactive governor with your setcpu and bacon bits, it may help
JD

JupiterDroid said:
yep,
i have noticed this too,
try an interactive governor with your setcpu and bacon bits, it may help
JD
Click to expand...
Click to collapse
Are you using the Modaco G2 or CM 6.1 RC1?

vro25 said:
Are you using the Modaco G2 or CM 6.1 RC1?
Click to expand...
Click to collapse
For my part, while using CM 6.1RC1 the battery drain was amazingly bad.
Under Modaco G2 ROM, it's more reasonable. For casual use for 7h since being unplugged, I'm at 76%.

daft.71 said:
For my part, while using CM 6.1RC1 the battery drain was amazingly bad.
Under Modaco G2 ROM, it's more reasonable. For casual use for 7h since being unplugged, I'm at 76%.
Click to expand...
Click to collapse
My phone's been unplugged for almost 7hrs and I'm at 85% battery on my original Bell ROM.
If you have Spare Parts installed, check Battery History. From there click on the "Running" bar. This will tell you how much time the phone has spent "awake" (this excludes the time the display has been on or while on a call).
I'm at 2hrs 18mins (+20mins with the display on).

Give my stock g2 rom a chance and tell me how that compares. I get better bat life out of stock kernel myself. Bet we could use some uv.

I've noticed something new.
I had my SIM card out of my phone today and it's been unplugged for 5hrs with not cellular network (but everything else going via WiFi) and it's still at 99% battery life.
Uptime is 5hrs 53mins with Awake Time at 1hr 36mins.
Is the cellular connection using more battery than it should be?

it looks like a combination of issues.
1. the android system uses a lot of battery
2.cell standby uses a lot of battery but less than android system
i have a unlocked bell desire z.
installed CyanogenMod RC2 but had to roll back to a sense based rom because the battery drain was just too much.

I figured it out, Kik Messenger was the main culprit.
It's been great since I uninstalled that.
To figure it out o had to restore to a clean rom and install one app at a time. At that point id leave my phone alone for a couple hours and check "wake" time under battery history in Spare Parts. If it was more than 10% we had our app.
Sent from my Nexus One using XDA App

seems to me the mocado in my g2 gets better life than the stock g2.
id give up a lot of features for good bat life.
are there any roms created for bat life?

gnormal said:
seems to me the mocado in my g2 gets better life than the stock g2.
id give up a lot of features for good bat life.
are there any roms created for bat life?
Click to expand...
Click to collapse
ei did you unlock your phone already?

[Q] RCMix S v2.0 Evolutionary Sense battery problem

Hi,
due to my low post count I can't post in the actual thread about that ROM hence this topic.
I have a little problem with battery in my Desire Bravo. On my previous ROM DeFrost 6.1a the battery was holding for ~52h (low usage). After flashing with RCMix S v2.0 it dropped terribly to ~7h (nearly to none usage). This is a huuuuuuge difference as you may notice.
The phone is running exactly the same apps as previously, same settings (Wifi, GPS etc. I mean the most battery related). The only things I've also done prior to flashing the ROM was:
S-OFF
flashed with HBOOT CM7 r2
that's all.
Did anyone experience the same problem? Or does anyone know how to solve it? To anticipate the question: I haven't wipe battery stats after flashing.
HTC Desire A8181
32.54.00.32U_5.14.05.17
CM7 r2 HBOOT

Well there are a few things that have changed. You have gone from Froyo to Gingerbread. You have fine from AOSP to Sense. RCMix S has bits of Sense 3 thrown in too. So really, it takes a lot to run. I have used that rom but you really have to maximize the battery yourself instead of relying on the rom to do all the work.
Swyped...

Meaple said:
Well there are a few things that have changed. You have gone from Froyo to Gingerbread. You have fine from AOSP to Sense. RCMix S has bits of Sense 3 thrown in too. So really, it takes a lot to run. I have used that rom but you really have to maximize the battery yourself instead of relying on the rom to do all the work.
Swyped...
Click to expand...
Click to collapse
exactly. more graphics means more battery consumption.

Mistiqe said:
Hi,
due to my low post count I can't post in the actual thread about that ROM hence this topic.
I have a little problem with battery in my Desire Bravo. On my previous ROM DeFrost 6.1a the battery was holding for ~52h (low usage). After flashing with RCMix S v2.0 it dropped terribly to ~7h (nearly to none usage). This is a huuuuuuge difference as you may notice.
The phone is running exactly the same apps as previously, same settings (Wifi, GPS etc. I mean the most battery related). The only things I've also done prior to flashing the ROM was:
S-OFF
flashed with HBOOT CM7 r2
that's all.
Did anyone experience the same problem? Or does anyone know how to solve it? To anticipate the question: I haven't wipe battery stats after flashing.
HTC Desire A8181
32.54.00.32U_5.14.05.17
CM7 r2 HBOOT
Click to expand...
Click to collapse
I also had battery issues with 2.0. Flashed 2.1. http://rom.robocik.mobi/Desire/RCMixS/v2.1/

whenever you flash a new rom calibrate your battery(i use battery calibrator) and i am using this rcmix 2.0 rom from last 2 week i have no issue with battery.

I generally get a fair while out of mine.
I've been "up" for 14h:40m and I've lose 42% battery.
Here's some battery saving tips:
Turn off OTA updates (Settings-About-Software Updates)
Turn off "Notifiy me of Open Networks" (WiFi)
Change Wi-Fi Sleep policy to 15 minutes (Wi-Fi Advanced)
Turn off Pocket Mode (In Sounds)
Also, having two batteries helps I kept my old one from an insurance claim and charge them using a dock. Means I don't have to worry about running out of juice if I'm out for a long time.

Well, I updated to RCMix S v2.1 as someone suggested and it actually made it even worse. The battery was sucked dry after 5 hours. Then I used the Battery Calibrator. Now it's been 20h since last charging exactly and I got 60%. That's way better than it was. So it seems like the problem was that I haven't wipe the batter stats after flashing new ROM. Lesson learned.
Thanks for all your answers. I appreciate that.

When do you wipe the battery stats, though? I've never done ir.
I had 15h yesterday and about 22% loss. Now I'm at 1d, 13h, 17m and 54% lost!

Well, as far as I know we are supposed to wipe them after every ROM flash as those stats are old (previous ROM) and not reliable anymore. I'm sure someone more experienced than me will have something more to say about it.

I never knew that. Aren't you supposed to wipe when it's dead, though (0%)?
This would explain why when I got a new phone and installed this rom straight to it the new battery was better than the old. Both are fine now though. Or at least I can't tell which is which anymore!
Sent from my HTC Desire using XDA App

Hy guys have you problem with room when it works only on gsm mode....
Sent from my HTC Desire using XDA App[/QUOTE]

Kryten2k35 said:
I never knew that. Aren't you supposed to wipe when it's dead, though (0%)?
This would explain why when I got a new phone and installed this rom straight to it the new battery was better than the old. Both are fine now though. Or at least I can't tell which is which anymore!
Sent from my HTC Desire using XDA App
Click to expand...
Click to collapse
You are actually supposed to charge the battery to 100% and then some. Download current widget and put on your homescreen. Charge until 100% and when current widget reads 0a you unplug, boot into recovery and whipe battery stats.

Some Help in choosing a new ROM. (a few questions)

Hey everyone, this is my first post in this great forum.
I am looking for some help in choosing a new ROM for my HTC desire, the main thing i want to see is the new Gingerbread OS 2.3 and the improvements it brings (battery life), but sadly it has not been officially released to the Desire platform.
EDIT :
Okay now Im on CM7, probably gonna try oxygen later, but till now CM7 suits all my needs and the battery seems good (20 to 26 hours heavy usage) but im running into a small problem.
at 9% the battery dies and phone turns off, battery and phone seem somehow out of sync so 9% means 2% or something, how can i fix this and make it turn off at 2% ?

If it's battery life you're interested in, Oxygen is pretty awesome, but it's AOSP so doesn't have any Sense stuff (widgets, messaging app, camera etc) - there's stuff on the market that provides equivalents/better versions though.
I've just flashed a sense ROM a couple of days ago after coming from Oxygen and I'm missing Oxygen so much that I'll be going back to it tonight It's very fast and stable.
But if you want to stay with Sense, this ROM is as close to stock Gingerbread (with Sense) as you'll get http://forum.xda-developers.com/showthread.php?t=1124810
People have been getting good battery life with that but I've not had too much luck getting great results. It's very smooth though
EDIT: CyanogenMod 7 I can't tell you too much about as I've only briefly flashed it. I remember it didn't feel as "clean" as oxygen but it had a huge amount of customisation potential (though saying that, the latest Oxygen build has almost as much, with the ThemeChooser). Also I don't think CM7's battery life is as good as Oxygen's.
What I'd do if I were you: Flash the CM7r2 HBOOT from http://alpharev.nl/ then flash Oxygen/CM7/SGBS depending on what you want to try first - all 3 work on that HBOOT so if you don't like one you can just flash another quite easily.
Make sure you know what you're doing flashing HBOOT though as there's a risk of bricking associated with it. So just read up first.

cgmorris89 said:
If it's battery life you're interested in, Oxygen is pretty awesome, but it's AOSP so doesn't have any Sense stuff (widgets, messaging app, camera etc) - there's stuff on the market that provides equivalents/better versions though.
I've just flashed a sense ROM a couple of days ago after coming from Oxygen and I'm missing Oxygen so much that I'll be going back to it tonight It's very fast and stable.
But if you want to stay with Sense, this ROM is as close to stock Gingerbread (with Sense) as you'll get http://forum.xda-developers.com/showthread.php?t=1124810
People have been getting good battery life with that but I've not had too much luck getting great results. It's very smooth though
EDIT: CyanogenMod 7 I can't tell you too much about as I've only briefly flashed it. I remember it didn't feel as "clean" as oxygen but it had a huge amount of customisation potential (though saying that, the latest Oxygen build has almost as much, with the ThemeChooser). Also I don't think CM7's battery life is as good as Oxygen's.
What I'd do if I were you: Flash the CM7r2 HBOOT from http://alpharev.nl/ then flash Oxygen/CM7/SGBS depending on what you want to try first - all 3 work on that HBOOT so if you don't like one you can just flash another quite easily.
Make sure you know what you're doing flashing HBOOT though as there's a risk of bricking associated with it. So just read up first.
Click to expand...
Click to collapse
Thanks.
I decided to try CM7 7.0.3 for a while and i like it. Alot of customization and some neat features, but the downside is that i dont feel like the Battery consumption has changed at all, its still as i have had my 2.2 froyo stock i think.
I did a small measurment of battery consumtion please tell me if i should be getting these results:
First
-Phone with CM7 rom Charged at 96%
(turned on wifi for like 10minutes, did around 6 phone calls, 1hour looking around settings, animated wallpaper activated for an hour)
After exactly 6hours the battery went down to 76%
So in 6hours the battery decreased 20%
Is this a good result? Will I be getting better battery life in the Oxygen rom ? If so i will definitely switch to Oxygen.

Well that's not exactly bad. I'm currently on 42% after 20 hours 30 minutes with WiFi on syncing emails every hour, a bit of browsing, over an hour of gaming (trial xtreme), some texting, about 20 minutes of calls and some music playing too. Idle it probably uses less than 1% per hour. I'm on the latest oxygen.
I'm really happy with this battery life
I'd recommend downloading battery calibration from the market to get the most from your battery.

Redux is a good ASOP ROM with good battery life - its quite stripped down.
For a sense ROM - I like LeeDroid.

cgmorris89 said:
I'd recommend downloading battery calibration from the market to get the most from your battery.
Click to expand...
Click to collapse
Or completely ruin it. Battery calibration is to be used only if your battery percentage is out of sync with real mV status, so your phone ends up dead at say, 10%. It is not to be used to decrease battery consumption, which is not going to happen. Ever.
To OP, it boils down to your preference. I couldn't care less for ota updates, but if you do, flash ruu, or maybe even rooted stock would work, I'm not sure about that though. As for battery consumption, you had 1 hour screen on, some calls and texts. I'd call that fair.

erklat said:
Or completely ruin it. Battery calibration is to be used only if your battery percentage is out of sync with real mV status, so your phone ends up dead at say, 10%. It is not to be used to decrease battery consumption, which is not going to happen. Ever.
Click to expand...
Click to collapse
Yeah you're right. I meant battery monitor widget. It was late at night, forgive me
Battery monitor widget gives you a good idea of what your drain can be attributed to so is a very handy thing to have on your phone. Battery calibration (as the poster above mentioned) is to line up the amounts your phone reports with the true amounts and should only be used if you're getting strange shutdown occurrences etc. Sorry about that
Some people use juice defender too but I don't really like it tbh.

Yeah, those placebo apps are the best
Juice defender, setcpu, task killers, memory menagers etc share the same place in the Hall of sillyness.

cgmorris89 said:
Yeah you're right. I meant battery monitor widget. It was late at night, forgive me
Battery monitor widget gives you a good idea of what your drain can be attributed to so is a very handy thing to have on your phone. Battery calibration (as the poster above mentioned) is to line up the amounts your phone reports with the true amounts and should only be used if you're getting strange shutdown occurrences etc. Sorry about that
Some people use juice defender too but I don't really like it tbh.
Click to expand...
Click to collapse
Woah i used the battery calibration app i didnt check the rest of this thread until now, so didn't know, i only saw your mentioned batt calibration and i used it.
Today battery Died at around 9%
What should i do to fix this ? please

Fruitt said:
Woah i used the battery calibration app i didnt check the rest of this thread until now, so didn't know, i only saw your mentioned batt calibration and i used it.
Today battery Died at around 9%
What should i do to fix this ? please
Click to expand...
Click to collapse
Read this topic
http://forum.xda-developers.com/showthread.php?t=755903

erklat said:
Or completely ruin it. Battery calibration is to be used only if your battery percentage is out of sync with real mV status, so your phone ends up dead at say, 10%. It is not to be used to decrease battery consumption, which is not going to happen. Ever.
To OP, it boils down to your preference. I couldn't care less for ota updates, but if you do, flash ruu, or maybe even rooted stock would work, I'm not sure about that though. As for battery consumption, you had 1 hour screen on, some calls and texts. I'd call that fair.
Click to expand...
Click to collapse
To the OP (not erklat)
If you flash a carrier RUU you're all set for ota UPDATES.
If you de-branded the phone yourself, you can still get ota updates, just make sure your goldcard is installed prior to installing the update. If you update without a goldcard you will lose your data connection
If you have a rooted stoc, same as erklat's opinion, I think it should work but I have never tested this myself.

shankly1985 said:
Read this topic
http://forum.xda-developers.com/showthread.php?t=755903
Click to expand...
Click to collapse
No i read this method and many users are reporting battery damage. I dont want to do this. My battery on regular use (calls, wifi, games,browsing) lasts 26 hours max and on idle it could last like 40 hours or more maybe.
Its just that the phone is turning off at 9% battery.
I used the Battery calibration app suggested before by cgmorris89 but then erklat said that it would ruin things.
What can i do to make my phone turn off at 2% ?

Oxygen every day!

Try MIUI.us!
Miui is using cyanogenmod kernel and base over which it gives great launcher and best default sms and phone apps.
Firewall and white/black list call blockers are included also.
If you can live with english locale, of course.
Sent from my HTC Desire using XDA Premium App

Thank you guys, yes i will try Oxygen and MIUI later on, but now im testing with CM7 and i have this battery percentage problem. If anyone has a solution to this, will be very much appreciated.
And another thing, should i update my Radio ? i have 4.08.00 something, is it safe to do so or might i brick my phone ?

Heavy battery drain on Gingerbread

Hey Guys,
I've been trying out many roms in the last time and I've noticed that on every Gingerbread rom, the battery drain is much higher than on Froyo roms. That's weird, because I constantly hear of people's battery life getting better after switching to Gingerbread.
On Froyo, the standby consumption is at 5 mA. On Gingerbread it's 75 mA. On Froyo, I can surf the internet for 10 minutes and nothing changes, on Gingerbread the battery would lose 5%. With regular use, when the phone is full in the morning, it's almost every day empty 8 hours later.
I just want to have a Gingerbread Wildfire with decent battery life. I tried many roms, and even on CM7, battery life is horrible. Even on a clean install without any apps. What is going on there? Is it maybe the radio? Or the kernel? Do you experience similar drain?

Maybe CPU?
I dont know if this will help but Gingerbread roms often have overclock settings, have you used the overclock feature because this would most definatly reduce your battery life but otherwise im not too sure but i must say i was using Oxygen (Gingerbread) on my wildfire and the battery life was very bad compared to stock ruu roms, sorry if i didnt help :S

Any idea? Im about to upgrade to the gingerbread.

Bwfclew07 said:
I dont know if this will help but Gingerbread roms often have overclock settings, have you used the overclock feature because this would most definatly reduce your battery life
Click to expand...
Click to collapse
I know about that, but I don't overclocked my Wildfire. Just because the battery drain is heavy enough on regular CPU speed.
btc2003 said:
Any idea? Im about to upgrade to the gingerbread.
Click to expand...
Click to collapse
Just upgrade and see yourself, I heard about many Wildfire users with Gingerbread who got better battery performance than on Froyo. Unfortunately, I ain't one of these

After a new flash it's usual to have battery drain. After a few charges it will buff out.
Sent from my HTC Wildfire using XDA App

underclocking ur cpu is a propable way to go. actually using conservative governor in cpu settings, may help your battery efficiency. but before doing this, search for a thread concerning this matter. u can always give it a shot and see for yourself, decide later if you want to keep gingerbread or not.