Develop Bugs

Battery drains very fast after ROM upgrading to B&B 3.7

I install B&B3.7 a week ago. The battery was ok in the first few days.
now it drains very fast. In the night in stand by mode (no application running, LCD is off), 50% of battery is drained. Playing mp3 with mobile media player 1 hour, 12% is drained.
anyone knows a solution for it?
has this problem something to do with the ROM?
P.S. I am using O2 Orbit (Germany)
Thank you.

It's something to do with 'learning'
Apparently, it's all to do with the systen 'learning' the characteristics of the battery - the % reading is probably inaccurate. When you flash a new ROM, it resets all the battery knowledge, and can take a week or three before it gets accurate again.
I had this in the past, then performance stabilised. Now I've reblasted 3.7 and the battery drain is back. Just keep it on a charger overnight for a few days and it should hopefully be ok.

Hi. I'v had the same problem with battery and did three things :
1. This tweak from my old Xda Mini S
2. Installed new Wisbar Advance 3 Beta 5 (if you're using Wisbar Advance). And this probably was the reason of weak battery in my mobile.
3.
Apparently, it's all to do with the systen 'learning' the characteristics of the battery - the % reading is probably inaccurate. When you flash a new ROM, it resets all the battery knowledge, and can take a week or three before it gets accurate again.
Click to expand...
Click to collapse
And TangerineTractor is right. You need to sort of calibrate your battery reading.
I'm doing some testing since yesterday, but it looks like solved.

Got the same problem dude,
my battery is draining at the speed of light...
I aplied the sd-battery-save.cab but i am still loosing something like 1% every 30mn.
Any info?
thanks

Me Too And Also I Feel Some Slowness In This Room In Comparing To Other Tom Room??

For now, I'v lost 2% after 5 hours or so. Try to recharge your battery from 0% to full 100%. It should help.

I've changed my radio back from 02.94.90 to 02.93.90 that seemed to fix it for me.

Short battery life!

Hello people, after having used my Touch pro 2's GPS function extensively one day on battery, I have realized that the battery's life has shortened by huge amounts of time. It lasts for less than 24 hours now, so I was wondering if I needed a new battery or is there something I can do to restore it back to the previous state. Thanks!

I don't think using the GPS should ruin your battery, just doesn't make sense! Are you sure you shut off the GPS after using it? Are you running any other programmes in the background? Did you flash a new ROM?
My battery started going down twice as fast after swapping to the new "official" Sense 2.5 ROM.

you can try a couple of things that may extend your battery life. try first turning off the auto speakerphone when the phone is face down. i just did this and i can tell a marked difference in just a couple of days. also search battery life reg edits. theres a ton out there here and on ppcgeeks that will definetly help. in general i noticed that when I use GPS the battery drain is pretty high. hope that helps

Dimitri Stephan said:
Hello people, after having used my Touch pro 2's GPS function extensively one day on battery, I have realized that the battery's life has shortened by huge amounts of time. It lasts for less than 24 hours now, so I was wondering if I needed a new battery or is there something I can do to restore it back to the previous state. Thanks!
Click to expand...
Click to collapse
Using the GPS all day will def drain your battery much faster, especially if you're using aGPS and/or an app that also downloads data to compliment the location info (like google maps). The GPS radio isn't 2-way like the phone or 3G or wifi, but it's still a radio and will give a noticible hit on your batt life when used even moderately, let alone all day.
If you're going to be using GPS a lot, you might want to try different radio roms to see if any of them make a difference in the batt life for you, but I don't know that will make as much of a difference as it does for the phone reception, etc. I would also suggest evaluating various GPS apps, with an eye on relative battery drain

Well guys, thanks for the answers, but that still doesn't solve my problem because I don't use the GPS function often at all, but the battery still drains quickly. Also, there are no programs running in the background. There is however a data connection that is always on and the mail checks for mail every hour. But the thing is I don't want to change any settings to enhance battery life, If it worked fine with the same settings before, why wont it do the same now? Do I need a new battery? Thanks!

Dimitri Stephan said:
Well guys, thanks for the answers, but that still doesn't solve my problem because I don't use the GPS function often at all, but the battery still drains quickly. Also, there are no programs running in the background. There is however a data connection that is always on and the mail checks for mail every hour. But the thing is I don't want to change any settings to enhance battery life, If it worked fine with the same settings before, why wont it do the same now? Do I need a new battery? Thanks!
Click to expand...
Click to collapse
Ahhh sorry, I misunderstood, I thought you were just saying it drains faster while you use the GPS like that, not since you used it...I get it now.
That one day of heavy use shouldn't have killed your battery, take a look at THIS thread, others with the same issue/question have posted different things that have worked for them...you might want to give the steps in post #31 a try before thinking about buying a new batt.

Dimitri Stephan said:
Well guys, thanks for the answers, but that still doesn't solve my problem because I don't use the GPS function often at all, but the battery still drains quickly. Also, there are no programs running in the background. There is however a data connection that is always on and the mail checks for mail every hour. But the thing is I don't want to change any settings to enhance battery life, If it worked fine with the same settings before, why wont it do the same now? Do I need a new battery? Thanks!
Click to expand...
Click to collapse
You can install " battclock " and you can continuously see what the battery drain actually is during different functions.

jonto said:
You can install " battclock " and you can continuously see what the battery drain actually is during different functions.
Click to expand...
Click to collapse
Yes, great recommendation! (why didn't I think of that? lol)
And with battclock you can now see your CPU usage in real-time, which is probably one of the best coincidental indicators of battery drain (much more so than memory load, in my opinion)

Hi Dimitri,
I experienced the same problem where my battery life suddenly "shifted" from 48 hours to 12 hours on regular use..
I thought the problem was the battery and I replaced it, this did not help at all..
The only cause of this problem that I can think was loading the official HTC UK 6.5 ROM (1.86.401.0)..

hilt49 said:
Hi Dimitri,
I experienced the same problem where my battery life suddenly "shifted" from 48 hours to 12 hours on regular use..
I thought the problem was the battery and I replaced it, this did not help at all..
The only cause of this problem that I can think was loading the official HTC UK 6.5 ROM (1.86.401.0)..
Click to expand...
Click to collapse
This is exactly what I am experiencing. (This together with not being able to connect the device to PC)
Installed several 6.5 ROMs and suddenly the battery lasts only half a night.
My question is: When the battery is full, when you turn the device off (completely off, not in standby mode!) does the battery drain then?
As far as I see, the battery has only 50% left after a night rest while it is off. So, the only way to keep the battery full is to remove it from the device.
What are your experiences with this?

Bright.Light said:
This is exactly what I am experiencing. (This together with not being able to connect the device to PC)
Installed several 6.5 ROMs and suddenly the battery lasts only half a night.
My question is: When the battery is full, when you turn the device off (completely off, not in standby mode!) does the battery drain then?
As far as I see, the battery has only 50% left after a night rest while it is off. So, the only way to keep the battery full is to remove it from the device.
What are your experiences with this?
Click to expand...
Click to collapse
If you are truely turning it completely off, the battery should NOT drain at all. Have you tried a new battery? I bought a pair of batteries and an external charger on flEabay for like $12. The batteries are good as originals as far as I can tell.

worwig said:
If you are truely turning it completely off, the battery should NOT drain at all. Have you tried a new battery? I bought a pair of batteries and an external charger on flEabay for like $12. The batteries are good as originals as far as I can tell.
Click to expand...
Click to collapse
Yes, I have two batteries, even an external charger.
Even when a battery is charged with the external charger, then put in the phone it drains the battery

hey guys can anyone link any of the forum topics to tweak battery life? the only things I have done is the general setting on the phone and the power management options with advance config are there more options and tweaks available?
thanks for all help!

worwig said:
If you are truely turning it completely off, the battery should NOT drain at all. Have you tried a new battery? I bought a pair of batteries and an external charger on flEabay for like $12. The batteries are good as originals as far as I can tell.
Click to expand...
Click to collapse
I will test this (again) tomorrow night.

Bright.Light said:
This is exactly what I am experiencing. (This together with not being able to connect the device to PC)
Installed several 6.5 ROMs and suddenly the battery lasts only half a night.
My question is: When the battery is full, when you turn the device off (completely off, not in standby mode!) does the battery drain then?
As far as I see, the battery has only 50% left after a night rest while it is off. So, the only way to keep the battery full is to remove it from the device.
What are your experiences with this?
Click to expand...
Click to collapse
Bright light...I'm also having BOTH of those problems...stock ATT rom. Within the past week my battery life has dropped exponentially, and when I went to sync last night, had not done so in a week or so, I get nothing...none of my PC's will recognize the phone as even being plugged in, let alone sync. I'm thinking maybe an ATT botched update?

virtualhomer said:
Bright light...I'm also having BOTH of those problems...stock ATT rom. Within the past week my battery life has dropped exponentially, and when I went to sync last night, had not done so in a week or so, I get nothing...none of my PC's will recognize the phone as even being plugged in, let alone sync. I'm thinking maybe an ATT botched update?
Click to expand...
Click to collapse
So it seems I'm not alone.
Mine is a universal one, no brand whatsoever. I will try to reflash the original (6.1) stock ROM, including radio.
Have you flashed yours already?

@Bright.light @VirtualHomer:
I have the crap battery + no activesync issue.
I'm on the Josh's Black 1.7 ROM. I tried hard reseting, reflashing, going back to the stock ROM, but no improvement.
I have heard that removing the battery overnight is a possible fix for the USB issue (maybe for both?), but I haven't tried yet, will try tonight.
If anyone out there has any potential soultions here... would be great. Right now, I only get 1/2 a day (~6 hours) out of the battery & no hotsync at all (other than BT).
One thing I am pretty sure of: The bad battery life and the activesync issue came up around the same time. Wierd.
Cheers

Fingaluna said:
@Bright.light @VirtualHomer:
I have the crap battery + no activesync issue.
I'm on the Josh's Black 1.7 ROM. I tried hard reseting, reflashing, going back to the stock ROM, but no improvement.
I have heard that removing the battery overnight is a possible fix for the USB issue (maybe for both?), but I haven't tried yet, will try tonight.
If anyone out there has any potential soultions here... would be great. Right now, I only get 1/2 a day (~6 hours) out of the battery & no hotsync at all (other than BT).
One thing I am pretty sure of: The bad battery life and the activesync issue came up around the same time. Wierd.
Cheers
Click to expand...
Click to collapse
You are right in assuming that battery life and connectivity issues came at the same time.
I was assuming this was because of a (bad?) flash, or maybe a bad ROM which changed something in a position that should not be changed and which is not restored by flashing another ROM.
A night without battery won't help, I think, because my device has been numerous times without any power and without any battery. However, I will try it again.
Could this be a faulty device? Or a design error?

@Bright.Light
I confirm that a night without the battery solved nothing. I have had my phone on for 5 hours now, taken 5 calls, none of them too long, checked email every 10 minutes (automagically) and I am down to 27% battery.
Also, I confirm that a replacement battery solves nothing, as I have also tried this.
I am planning on returning my device to an ATT store next week for a replacement... We'll see how it goes.
Cheers,
Matt

I'm in the same boat with mine. About two weeks ago the battery just started draining fast. Fast enough that it wouldn't make it to 4-5 hours without being charged. You could watch the battery meter drain. And what was weird was that there was no ROM change or anything that started this. Came out of the blue. Calling Spring tomorrow and getting a replacement is the best solution I can think of.

[Q] Investigating a battery drain issue

Hello all,
A few months ago I became a proud owner of a Moto Defy, a great rugged phone that has been working great for me until just last week. For some reason the battery life was cut drastically! So bad that while the screen was off and not touched at all, the battery percentage would go from 100% to 40% in four hours.
what was even worse was when I would connect the charger, the phone would charge completely in less that 1 hour! I didn't seem to matter if I was browsing the web, playing music over the loud speaker, or just leaving it alone, the battery seemed to fall the same.
I began to research online for some answers since I couldn't believe that the battery would just go bad just like that! first I installed a custom recovery that had the option of wiping the battery stats, but that didn't work. then I stumbled across this thread on a battery bug in the android os 2.3.
http://forum.xda-developers.com/showthread.php?t=1039696
Even though the os on this defy is 2.2.1 I thought I was on to something. they talked about an app called watchdog. I also found an app called Battery monitor widget, which allowed me to see the battery usage in milli-amps.
I got concerned when during the day, I noticed a spike in the battery usage that was crazy! the app showed where the usage went from 99ma to 2399ma drain and I lost 8% of the battery in that one minuet! Keep in mind that the battery is only rated at 1500mAh to begin with. With that being said, I was thinking I have a short in the phone! The spike happened again later on that brought my phone to it's knees!
while reading further into the thread, I installed watch dog lite. Immediately after the installation finished, I started getting flagged for an app using over 60% of the cpu while the screen was off! Fancy widget 1.3, I had liked this app so much on my old Moto cliq, I imported it over to my defy.
Maybe I have found the culprit, I donno. This is just my experience so far, if anyone can add to this, please do. I will continue to monitor the phone and the activity of the apps. I am still shocked about the battery drain spikes that I saw! I am still, to my knolage, running the stock rom that came with the defy, now with the addition of Clockwork MOD recovery installed.

i have issues too, in the last week my battery dies in 13-14 hours with normal use. before that, it lasted 24-25 hours with heavy use. i also have sudden pattery percentage drops (which is probably the same as yours, that 8% in one minute). i already tried reflashing sbf/cm7, calibrated battery with cwm and app, nothing seems to work. now i disabled boot oc and use setvsel, and installed battery monitor widget and watchdog lite, maybe those will help :S
sent from my cm7 defy...

Since I installed rc1.5 my battery last for a fairly long time. It droped from 100% to 26% in 23 hours with medium use (data connection always active, when I used it heavily I turned on 3g, I used wifi and I was on a sunny place so the screen was bright)
Sent from my MB525 using xda premium

many have reported battery drain on rc1.5, seems its not present in every case. just installed 110909 nightly, so cant really report on that yet, but ill do as soon as i can.

Im on CM& RC 1.5, my battery last me a long time (more than 30 hours) using a lot of wifi + edge data, and lots of calls and sms, so i guess i dont have the battery drain bug

[Q] Weird HTC Wildfire Battery Meter Issue

ROM : Cyanogenmod 7.1.0.1 Android 2.3.7 <<< Doubt this is important
Kernel: 2.6.35.14-nFinity [email protected] #1 <<< Might be important
S-ON
Okay so my Battery meter is definitely acting up. After charging the battery overnight it only charges to about 89%, maybe 91% if I'm lucky.
If I unplug and immediately reboot the device the battery meter says 98% or 97% at startup. Right now I have a reboot scheduler app that restarts my phone every morning at 4AM so that it's accurate-ish in the morning.
But that's not the only issue...
When I use my phone during the day, maybe making a call or two, on a 2G network to save battery, no Wifi or Bluetooth use and phone not overclocked, my battery drains incredibly fast. It goes down 15%-20% per hour! By about 3PM the phone says 15% left and then slowly drains down to 3% battery life. This is when it gets real weird... The battery level stays on 3% for about 6-8 hours, then finally goes to 2,1 and then dies. I got 3.5-4 hours on 3% with max overclock (768mhz on performance setting), maximum brightness, screen doesn't turn off, playing music while on HSDPA network, bluetooth on... So the battery doesn't seem to be the problem, only the battery reading that is displayed.
I tried going back to the default software that came with the phone, Android 2.1 with Sense and original kernel. The battery drain was a little slower but same effect, staying forever on 3%.
Can someone please explain to me why the phone does this? It's not a trainsmash, at least the phone isn't really draining as fast as it looks, but I effectively have no idea how much time the battery has left, which isn't ideal. It still lasts me the day and I charge it every night but I'd like to have this solved, it wasn't always like this. The phone is now 10 months old.
Any help at all will be greatly appreciated.

Defective "chipset"? (This i what HTC says, not me)
http://forum.xda-developers.com/showthread.php?t=1236844
http://forum.xda-developers.com/showthread.php?t=1252687
http://forum.xda-developers.com/showthread.php?t=1280396

I sent in my Wildfire for repair. Got it back and it's not the chipset.
Its something to do with clockwork or Cyanogen.
The battery was fine until I re-flashed them.
Now it's back to the same ****ty battery life before I sent it.
Soon as I get home. I am going to flash a new rom. Possibly an older clockwork and flash a new radio.
Will post results.

BarclayTech said:
I sent in my Wildfire for repair. Got it back and it's not the chipset.
Its something to do with clockwork or Cyanogen.
The battery was fine until I re-flashed them.
Now it's back to the same ****ty battery life before I sent it.
Soon as I get home. I am going to flash a new rom. Possibly an older clockwork and flash a new radio.
Will post results.
Click to expand...
Click to collapse
If you notice the first thread, people who have never rooted/modded are also experiencing this. But, in either case, do post your results.

3xeno said:
If you notice the first thread, people who have never rooted/modded are also experiencing this. But, in either case, do post your results.
Click to expand...
Click to collapse
True, but in my case I know the problem to an extent.
I remember now that the battery starting acting up after updating to newest Clockwork recovery.
So I will flash that first. Run tests.
Flash Radio. Run tests.
Flash Rom (non-cyanogen). Run tests.
I shall do tests 1 day at a time maybe if tests prove a posotive results then I will do 2 on the same day.

Don't forget to re-calibrate the battery before your tests. It's a major cause of battery drain on Custom ROMs.

Ah, yes. Almost forgot :3

[Q] Insane display battery usage

I'm on Runny 3.3 which I have had flashed for about a week.
Wiped completely before flashing (Full wipe EXT4 zip), never had this problem before.
Anyway, in this week I assumed that the battery usage would level out. I tried calibrating it, but display always takes up 93% of the battery usage.
Even on Runny 3.1 I had brilliant battery life. This problem has only occured on this ROM. I lost 7% from full in 20 minutes when I was using my phone for relatively basic tasks.
Should I reflash? What kind of values are you getting for display battery usage?

I have a solution my friend
I suffered this problem like a few days a go.
what you need to do is take a look at this post i hope it'll help
http://forum.xda-developers.com/show...26016#16808950

Thanks, but the link doesnt work lol

a wee bump for any help....

I changed the kernel to the Unity kernel and the display is now using 60 - 70 odd percent. Can't really test it though since its been plugged in since I flashed it. Will see how it goes tomorrow and report back

Please let me know, my battery lasts 8 hours with moderate 3 hours of onscreen time (at best)

For those who suffer this problem check out memnocs perfect battery guide
Btw I'm sorry the link didn't work. As a said take a look at memnocs guide its in dhd development page

The kernel didnt help much, the display usage has gone down but the other things have gone up lol a lot more than I expected. Will try that battery guide now.

lol what do you expect? the display is the biggest battery-eating-monster in our phone. it's completely normal that it drains that much.
fyi: my phone drains ~250-300 mA with display on, lowest brightness level, ~500 with maximum brightness level and 1-8mA in standby.
so: ~500mA/h and we have a 1200mA/h (probably less than that, since Li-Ion batteries lose capacity after some months) battery -> about 2h display on at maximum brightness

its weird because this "problem" occours only with sense rom.
On Cm7 and miui the screen was under 50% of battery usage...

Most non sense roms don't calculate ic correctly.
You can use an app called battery monitor widget to watch your battey drain if you want to.
Sent out of my Free Candy Van.