Develop Bugs

Extra Battery Drain?

Well, I jumped the gun and am using Adrenlyn's "Second Wave" Froyo rom. Also, I threw in the 2.15 radio update, so I should be all caught up. HOWEVER, I noticed my battery has been...eh, at best.
Then I thought, "could it be the new toolbar I installed." I added the Stock Sense UI bar with Battery %'s added in (white.) Do you think this could be hampering my battery life, or do you think it's more a psychological thing, since I can now see exactly how much battery is left?

frishmans92 said:
Well, I jumped the gun and am using Adrenlyn's "Second Wave" Froyo rom. Also, I threw in the 2.15 radio update, so I should be all caught up. HOWEVER, I noticed my battery has been...eh, at best.
Then I thought, "could it be the new toolbar I installed." I added the Stock Sense UI bar with Battery %'s added in (white.) Do you think this could be hampering my battery life, or do you think it's more a psychological thing, since I can now see exactly how much battery is left?
Click to expand...
Click to collapse
not trying to be rude man but the reason why your not gonna get an answer is because this belongs in general section. follow the rules of the forum and people will help you.

bluewave53 said:
not trying to be rude man but the reason why your not gonna get an answer is because this belongs in general section. follow the rules of the forum and people will help you.
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Click to collapse
This.
That said, I'm assuming you did a complete wipe of Cache and Data when you installed the new ROM. If so, this erased the battery stats. If you didn't have the phone at 100% charge when you did this, your battery life will suffer. Steps to fix it:
1. You will need to charge the phone to 100% (while the phone is off).
2. Leave charging cable plugged in.
3. Boot into recovery and wipe the battery stats (should be under Advanced).
4. Then boot into Android.
5. Then remove the charging cable.
Your phone will have abnormally good battery life during the first discharge, but after you charge it again it'll be back to normal.
Pretty sure this info is searchable (I have typed it out at least 3 times myself)... maybe it should be added to the Wiki.

larsrya8 said:
This.
That said, I'm assuming you did a complete wipe of Cache and Data when you installed the new ROM. If so, this erased the battery stats. If you didn't have the phone at 100% charge when you did this, your battery life will suffer. Steps to fix it:
1. You will need to charge the phone to 100% (while the phone is off).
2. Leave charging cable plugged in.
3. Boot into recovery and wipe the battery stats (should be under Advanced).
4. Then boot into Android.
5. Then remove the charging cable.
Your phone will have abnormally good battery life during the first discharge, but after you charge it again it'll be back to normal.
Pretty sure this info is searchable (I have typed it out at least 3 times myself)... maybe it should be added to the Wiki.
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Click to collapse
Well, you helped more than one person. Thanks, going to try it right now. Now just wait to wait patiently for 3 days for the battery to charge to full...
God, I hope the official 2.2 OTA fixes the battery life/charging time.

to be honest, my battery has been ****ty after radio update.

has anybody does a comparison of cell standby percentages from before/after the 2.15 radio?

I just did the Battery wipe
Well in the 5 minutes I have had my phone back on I am already down to 96%
I am using Sky Raider 2.5.2 Stock with the UnRevoked-Forever and Radio 2.15
I am not seeing much if any difference in battery life...
I can plug in as needed when in my home office, but on the road a whole other ballgame.
I have 2 spare batteries HTC EVO 4G 1800mAh, Can't afford not to be connected...

Throw hydras stock undervolted kernal in. I can go a good day and a half on a full charge with the 2.15 radio installed
Sent from somewhere

Which Kernel
lgldrgdlr said:
Throw hydras stock undervolted kernal in. I can go a good day and a half on a full charge with the 2.15 radio installed
Sent from somewhere
Click to expand...
Click to collapse
1.115 or 1.113 OC/UV

http://www.hydrakernel.net/stock_speed_undervolted_kernels.htm
Sent from somewhere

larsrya8 said:
This.
That said, I'm assuming you did a complete wipe of Cache and Data when you installed the new ROM. If so, this erased the battery stats. If you didn't have the phone at 100% charge when you did this, your battery life will suffer. Steps to fix it:
1. You will need to charge the phone to 100% (while the phone is off).
2. Leave charging cable plugged in.
3. Boot into recovery and wipe the battery stats (should be under Advanced).
4. Then boot into Android.
5. Then remove the charging cable.
Your phone will have abnormally good battery life during the first discharge, but after you charge it again it'll be back to normal.
Pretty sure this info is searchable (I have typed it out at least 3 times myself)... maybe it should be added to the Wiki.
Click to expand...
Click to collapse
Right on, sorry about that yall. :/
And indeed, my phone was NOT fully charged to 100%, so I'll do the steps to fix it, and eventually report back. I do have the Hydra-Stock UV Kernal installed already.

[Q] Seriously? Cyanogen ROM kills battery like this?

I have done a bunch of reading since my first flash to Cyanogen's 6.1 but not finding really satisfactory answers.
With the old rooted stock deodexed...I was getting about 14-15hrs of moderate-high use. So basically I pulled the cord at around 7am and plugged back in around 6pm with about 40%.
Was fine.
Flashed 6.1 last night and now I am two hours off charge and sitting at 58%!! I have all syncs turned off and I have no wifi/gps/4g running. The ONLY widget at the moment is weather and it only updates when I hit refresh.
My search has shown something called battery calibration...but that doesn't make sense to me. I have done the long charge, power off charge, power on charge etc... But since I have a wall battery charger I have just moved away from that and occasionally swap out my batteries for a full charge in that thing.
Does that 6.1 REALLY need another voodoo approach to battery life? Also the threads I have found seem to be for the nexus one or the HTC Magic(?).
Anyone else suffering HORRIBLE battery life after flashing 6.1?
Anyone got a link to a fix for the EVO and maybe something that I can get through the day with (do not have my charger at work)?

When I flashed CM7 to my wife's phone the battery was horrible (Less than 2 hours). I recalibrated the battery and the next charge lasted 2 days. Give this a try:
Battery recalibration
If you're experiencing higher than normal battery drain, try the following:
Charge the device to full battery; let it keep charging until the battery says it is fully charged. Do not just wait until the light is green, it isn't always fully charged, causing a lot of inaccuracies. (You can check by going to: Settings -> About device -> Status -> Battery Level = Full.)
Boot to recovery mode and delete the battery stats
NOTE: To have the most accurate of battery stats, reboot the device immediately after wiping the battery stats and wait for CyanogenMod to boot completely to the desktop. Once your entire boot is done and you have full access to the device, go ahead and pull the charger and continue with this troubleshooter.
Do not charge the device until after draining the battery completely, resulting in it automatically shutting off.
Recharge the device completely and then use as you normally would.
Also, CM6.1 or CM7 should get decent battery life. If it still doesn't try flashing a different kernal. I found that savaged zen bfs sbc kernal extended my life considerably.

sablesurfer said:
I have done a bunch of reading since my first flash to Cyanogen's 6.1 but not finding really satisfactory answers.
With the old rooted stock deodexed...I was getting about 14-15hrs of moderate-high use. So basically I pulled the cord at around 7am and plugged back in around 6pm with about 40%.
Was fine.
Flashed 6.1 last night and now I am two hours off charge and sitting at 58%!! I have all syncs turned off and I have no wifi/gps/4g running. The ONLY widget at the moment is weather and it only updates when I hit refresh.
My search has shown something called battery calibration...but that doesn't make sense to me. I have done the long charge, power off charge, power on charge etc... But since I have a wall battery charger I have just moved away from that and occasionally swap out my batteries for a full charge in that thing.
Does that 6.1 REALLY need another voodoo approach to battery life? Also the threads I have found seem to be for the nexus one or the HTC Magic(?).
Anyone else suffering HORRIBLE battery life after flashing 6.1?
Anyone got a link to a fix for the EVO and maybe something that I can get through the day with (do not have my charger at work)?
Click to expand...
Click to collapse
Thats a old cm, cm is now cm 7... maybe try that one..
Sent from my PC36100 using XDA Premium App

Yea Cm6 is dated. But that shouldn't matter.. I actually had fantactic battery when I was on cm6, much better than what I get on cm7.
First, check spare parts for wakelocks and make sure you don't have any. After that, follow Fazulkas advice to reset battery stats, follow it correctly tho. I never thought wiping stats would make a difference, but it surely does.

Ok, I'll try that process when I get home tonight. (Guess I can survive w/o a phone for a few hours?!?! :^O) Haven't set up more than just the google account on this ROM as I wanted to test it first. So maybe tomorrow it will win me over.

DATED?!?! LOL! It was only just a final release a few months back...;^) It has all the important stuff working where as 7 doesn't and it is still a RC.
:^P
(Have you seen my sig? Old dogs only try the proven tricks thank you very much. :^)

CM6 is not dated. In fact CM 6.1.3 is the most current stable-release version of CM available!
Sent from my PC36100 using XDA App

Its not the ROM. Anytime you flash a ROM, you need to calibrate your battery. By calibrate it isn't the plug in over and over method.
You charge to 100%, discharge it fully. Charge back to 100% then wipe battery stats in recovery. Then use your phone.

Flashed 6.1 last night
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There is your problem. Anytime you flash a new rom, you need to give it at least a day or two to fully calibrate everything in the rom.

sekigah84 said:
Its not the ROM. Anytime you flash a ROM, you need to calibrate your battery. By calibrate it isn't the plug in over and over method.
You charge to 100%, discharge it fully. Charge back to 100% then wipe battery stats in recovery. Then use your phone.
Click to expand...
Click to collapse
HUH...this is my fourth ROM flash, first one away from stock rooted and I have never had this issue. Maybe the stock ROMs do not have this issue?

[Q] batterystats.bin: Any downside to deleting after EVERY recharge?

I seem to get really excellent battery life when I wipe batterystats.bin after recharging to 100% at night. After a couple recharge cycles, battery life starts to get a little worse each time. But if I wipe again after a recharge, it adds a good 4-5 hours to my battery life.
I don't know why my phone/battery work this way together - they just seem to. I am wondering if there is any downside to deleting batterystats.bin EVERY time I recharge? Is it harmful to the battery? I doubt it is a problem for the phone but maybe so?
Thanks for any advice.
[EDIT: I realized after posting that this maybe would be better in the Q&A section of forum. I would move it there myself but don't have rights to do that. I'm sorry.]

only need to do it once.... .. i do it once per new rom/kernel.... you have to let that stuff work itself out.... let it chill for a week or so... just run it....
....i put a new rom on... .then kernel.. after i get it configured.. that night i charge it over night to 100.... then before i take it off.. i delete batstat with root explorer.... then unplug it... let it go down... .. charge it back to 100... . i'm telling you.. well for me... my battery last awhile.....i'm on nightly cm with savzen kernel.
good luck!.... if anything..get you a 1800mah battery from ebay.. there like 2 with charger for 7.99~....

I am wondering if there is any downside to deleting batterystats.bin EVERY time I recharge?
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Well you only need to do it once after flashing, after that, its useless. You THINK you are getting better battery life, but you are not.
Is it harmful to the battery?
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Click to collapse
Does nothing to the battery, the battery will still hold the same charge as before, and discharge the same way. The only thing you are doing is resetting the OS's 0%-100% stats, which again, is only needed to be done once.

You may be getting better battery life because after deleting the file if you aren't following through with the rest of the calibration process. After deleting, are you letting it discharge fully, then charge fully without breaks? If not, do it that way once & you shouldn't need to do it again.
But to answer your question - no, it won't harm anything. If you aren't calibrating properly after each battery stats wipe, then it may mess with your battery life. Other than that, you've got nothing to worry about.
Sent from my Evo + MIUI using Tapatalk!

I have to agree with the OP. I've tried a few different calibration techniques, followed the instructions carefully, and let them run their course. But after running a fresh battery calibration there is a noticeable improvement that day - I swear I'm not imagining things... The % starts at 100, then SLOWLY makes it's way down to 90 the way I think it should. Normally that first 10% just disappears into thin air...

[Q] Need help with battery

hi all , i used my htc wildfire for 8 month and at first my battery displays 100% when its full but since 3 month till now it always display around ~ 40 - 60 % and can't increase more . So someone can help me . Thx for read and sorry for my bad english

Are you using custom ROM or the stock ROM that comes out of the box(Froyo v2.2) ?
If, you are on custom rom, then you may try deleting the batterystats.bin present in /data/system. But first charge your wildfire, and if your removing your wildy from the charger after it gets the green led indicator, then wait till it reaches the 100%. In my case my wildy gets the green indicator in 90% but I wait till it reaches the 100%.
So, when you get to 100 reboot into recovery and select the option "delete the batterystats.bin" in wipe section. and then use the phone till it reaches 20% and then connect to charger but this time make sure you do not use the phone till it reaches the 100%(you may charge it when its switched-off.).
Note: charging through USB connected to PC gives a better battery life than the adapter provided for charging.
If, you are not getting 100% as previously mentioned, then also you can try deleting the file using recovery. You can download an app from market which will also do the same "Battery Calibration".

I have same problem too. My battery charge till 75 % and then stopped, i charged it on turned off and then turned on. I tried to install Battery calibration but this app doesnt let to calibrate battery till is not on 100 %. Also I tried to unroot the phone, some say that it will helo but still useless.
Sent from my Wildfire using XDA

@Justin5 : "Also I tried to unroot the phone" if you haven't unrooted it then you can try to delete the batterystats.bin file from recovery(explained in the previous post). If you have unrooted your phone, then you will have the stock Sense ROM v2.2. In that case also, your battery backup will decrease.
So, better stick to any custom rom. I am now using SplashMOD v1.6. Its fast, stable and backup is also good with some customization. You can try CM-7,RemPuzzle also(try searching in CM7 post for the stable ROM, you can read reviews to get a better idea).
Note: You haven't told of the ROM you are using.

Batterystats.bin contains information about what uses the battery doesn't it? I don't think it tells it how much charge to hold + it gets deleted everytime you wipe and flash so I don't see how deleting that file can help.
Sent from my Wildfire using xda premium

I was reading an article on this the other day in the android forums,and I believe it was saying that wiping the battery stats does absolutely nothing even in regards to calibration. I might have read wrong but I'm sure that's what it was insinuating.
one minute it works,the next it doesn't......yes that's right its the crappy xda update.

slymobi said:
I was reading an article on this the other day in the android forums,and I believe it was saying that wiping the battery stats does absolutely nothing even in regards to calibration. I might have read wrong but I'm sure that's what it was insinuating.
one minute it works,the next it doesn't......yes that's right its the crappy xda update.
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Click to collapse
Battery calibration does work (at least it did for me, when my battery discharged in 1 hour on my and worked normally after calibration on my tablet)

Don't shoot the messenger lol.the article (not me) was saying that just a good old discharge and recharge is enough and wiping stats is pointless. If I can find it I will link it.
one minute it works,the next it doesn't......yes that's right its the crappy xda update.

deteling the battery status can work but if the battery has some damage will stay that way, i hate the battery for the wildfire, it does not last very long...

www.xda-developers.com/android/goog...-battery-stats-does-not-improve-battery-life/
Nuff said!!

slymobi said:
I was reading an article on this the other day in the android forums,and I believe it was saying that wiping the battery stats does absolutely nothing even in regards to calibration. I might have read wrong but I'm sure that's what it was insinuating.
one minute it works,the next it doesn't......yes that's right its the crappy xda update.
Click to expand...
Click to collapse
I also noticed the difference before and after wiping the batterystats.bin when I was in SplashMOD v1.0. The backup also get increased if the battery is charged through USB till it gets 100%.
But, If the phone has been continuously used without the complete charge cycle, then the battery life will get decreased.

rajumack07 said:
I also noticed the difference before and after wiping the batterystats.bin when I was in SplashMOD v1.0. The backup also get increased if the battery is charged through USB till it gets 100%.
But, If the phone has been continuously used without the complete charge cycle, then the battery life will get decreased.
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Click to collapse
I'll say it again for the hard of hearing, Its not possible for batterystats.bin to affect battery life in any way.
When you go to settings/battery where it tells you what %of the battery has been used by what, that is the only information stored in batterystats.bin and nothing else, it also resets itself every single time you fully charge the phone so no need to wipe it as chances are you already have not long ago.
Yes discharging the battery fully and then recharging fully will prolong battery life, but its not always practical to do so and even if you do, all batteries will come to the end of there life sooner or later.
Sent from my Wildfire using xda premium

[Q]Severe Battery Issue

I need to figure out exactly what's causing this battery drain. At 7PM my battery was at 100% after installing a new radio+kernel combo. I also calibrated my battery using a method I read in the Calkulin thread for his ROM. The method was as follows: After installing a new radio, rom or kernel charge the battery to 100% then physically take the battery out for 3 minutes. Boot into recovery then wipe the battery stats and dalvik cache 3 times each. Boot into Android then charge to 100%. Download a battery calibration tool use that and discharge. Anyway, I did all of this and was done by 7PM. After light use...listening to a few songs via google music...did a search using 3g...nothing too heavy. By 8:23 my battery was down to 76%. I thought this was pretty abnormal so I downloaded some extra battery tools and app watcher tools to see exactly was draining me so bad. Over the course of about 1:30 hours my battery dropped from 76% to 46%. I froze some non essential apps after checking up on them with watchdog (social hub, yahoo finance, tts service and accuweather). Decided to do a restart to see if that would help and my battery read 17%. I just noticed that it went up to 18% and it's holding steady but this is really weird...I honestly don't know what's going on and I could really use some assistance with this issue.
I forgot to post stats for the past few hours. Before I started the battery drain quest the Battery Monitor Widget said that the estimated was around -280mA. Over the course of a few hours it ranged from that to well over -600mA. After the restart it dropped to like -2mA but now it's back up in between the -400mA to -700mA range. It's slowly dropping as I type but there's no way that this is normal.

Sometimes when doing reboots messes up the battery reading. Its done that to me before. I have noticed that on ics when I flash a kernel and modem it takes me like a full day to get good battery. After I flash it my battery is pretty bad. Search for an appstore called bettery battery stats. Its on here at xda somewhere. Use that to see if your phone is sleeping properly or if an app is wakelocking your phone. Also it depends on who u ask but wiping battery stats does absoutley nothing for me. Its been said before that it doesn't work. Hope u get it straightened out.
Sent from my SPH-D710 using xda premium

thanks for the response. I've downloaded the battery stat app but I need to read up more on it to find out what the program is telling me. In your opinion what is good battery drain? I was on facebook for a second and it skyrocketed to high -600's but now it's down to about -90mA and dropping by just sitting in front of me.

musclehead84 said:
Sometimes when doing reboots messes up the battery reading. Its done that to me before. I have noticed that on ics when I flash a kernel and modem it takes me like a full day to get good battery. After I flash it my battery is pretty bad. Search for an appstore called bettery battery stats. Its on here at xda somewhere. Use that to see if your phone is sleeping properly or if an app is wakelocking your phone. Also it depends on who u ask but wiping battery stats does absoutley nothing for me. Its been said before that it doesn't work. Hope u get it straightened out.
Sent from my SPH-D710 using xda premium
Click to expand...
Click to collapse
Clearing battery stats does work to wipe any info the os has on the battery. Just check your battery graph in settings, boot to cwm, wipe battery stats, then look at that graph again.
I know you know your fair share of info, so no disrespect man...
Sent from a phone with kNOw CiQ kOnane...

TeamERA said:
Clearing battery stats does work to wipe any info the os has on the battery. Jus check your battery graph in settings, boot to cwm, wipe battery stats, then look at that graph again.
I know you know your fair share of info, so no disrespect man...
Sent from a phone with kNOw CiQ kOnane...
Click to expand...
Click to collapse
I think he meant wiping does nothing to actually effect the life of the battery... Which, I agree. I've never seen any benefits when I've done it on my ET our my Moment.
Wiping just resets the OS's experience with the battery. Using your phone normally for 24 hours had the exact same effect.
Sent from my SPH-D710 using XDA

things were looking up as far as battery life goes. i got rid of some programs that were hogging the cpu and i was almost to around 12 hours on a single charge with light use. however, i did a reboot at around 6pm and my battery read 45% before hand. after the reboot it read 10%. do you think it has something to do with the kernel? this is the second time a reboot has jacked up my battery.

Guys
I have been having the same problem and try lots of things but what I did not try and just found out is that my phone has a 1500mHa instead off a 1800mHa Sprint store made a mistake and placed the wrong battery inside my phone.
Maybe some of the problems you guys are having is due to that fact.
Besides opening the phone there are several app that will actually tell you which battery you have I.E. Battery Monitor