Database Develop

[Q] Low-Battery Boot-Loop

Hey,
I just installed CyanogenMod 7 on my milestone using openrecovery. Everything was working perfectly, but the battery was draining like there's no tomorrow.
Started at 50% when I first booted, I downloaded a couple of apps from the Market, and went down to 20% (in the space of about 10 minutes). So I plugged in the phone charger (USB into back of my computer), and then while configuring settings, battery went to 4% (it was checking in 1% increments, which I have since found out that drains the battery). The phone then died. So, the phone was using WAAAAAY more power than the USB port could supply. Anyway, thought I'd let it charge for a while, then go back into the settings, and remove the 1% increments, to try and get normal battery life.
The phone recharges, and automatically reboots. Its still on 4%, but I went in, turned off the 1% increments. Phone dies again.
Charges about 10 minutes, reboots itself again. During this period, I did some research, and found that the battery draining can be caused by excessive CPU usage, resulting in the screen staying on even when it's off (?).
But, alas, no luck. I don't have enough battery to flash the stock SBF.
All I really want is:
a) a way to just have the thing charge without turning itself on, and
b) a workaround to get at least half-decent battery on CM.
Thanks,
David.

[Disclaimer: not guaranteed to work, I don't take responsibility for anything you do your phone!]
Try deleting your /data/system/batterystats.bin before trying this procedure out. You can use an app like Root Explorer to do this. If you're unable to, proceed with bump charging.
Try bump charging:
1. Remove battery, put it back in after a good 2-3 minutes and connect phone to a wall charger. Make sure the phone is still switched off while it's charging.
2. After it finishes charging completely (green LED), let the charger be switched on and connected - remove the battery alone (without switching off charging).
3. After a few seconds, you will see a "?" on your screen, after which you insert the battery back in (while charger is still switched on).
4. Wait till charging completes again (green LED).
5. Plug out charger, wait for 2-3 minutes and plug charger back in and start charging again. It should now be fully charged.
6. Turn phone on while charging, after booting into CM, try OC'ing it to 800MHz interactive governor, apply settings on boot and restart your phone.
Hope this fixes your problem. Good luck!
Anyone can feel free to correct me if I'm wrong.

rampee said:
[Disclaimer: not guaranteed to work, I don't take responsibility for anything you do your phone!]
Try deleting your /data/system/batterystats.bin before trying this procedure out. You can use an app like Root Explorer to do this. If you're unable to, proceed with bump charging.
...
Click to expand...
Click to collapse
I had the same problem some time ago and tried all this to no avail. I even changed to froyomod for some time, but CM7 is far superior so I just came back to it. The problem happened again this morning just after using google maps. I then rebooted and uninstalled all google maps updates. Seems to be working o far.

hey, yeah, just one problem with that - i can't boot into android for longer than about 3 seconds, and now there is no way to revert, as the bootloader says Battery Low.

Can't you boot into recovery, flash another rom and then reboot into android?

Don't charge from usb, use wall charger. That way, the system will boot only to charge-only screen, android system itself not running.

Hey, kabaldan, I found that out.
Charged 100% using the bump method instructed above. Battery life is still worse than useless, 50% in about a half hour.
will performing those other steps help?

Can you try another fully charged Milestone/Droid battery?
If that doesn't work it might be a problem with your phone's hardware. I know it might be a long shot, try cleaning your phone's and your battery's leads (connectors) if they might've accumulated rust/dust or something. Not sure.

Don't know if this is a similar problem but mine goes down in % pretty fast too but then it can stay for 1% for half a day

No, mine definitely dies. At around 5%, although I did turn off the 1% increments, because I heard they guzzled battery.
The battery life is getting progressively better, but as soon as I use 3G, or open any half-decent games, it drops to about 40% in ~.00001 seconds.
Although, to be fair, I didn't get great battery life on stock rom, either. And my ram always seem chokkas. Like usually only have about 50mb, and I'm not running anything too hectic.
Unfortunately, I think I'll get the Samsung Epic as soon as they bring out the GSM version. I just want an android phone with an unlocked bootloader, insanely large screen, and hardware keyboard, not to mention ~20 days battery life. Is that too much to ask?

[Q] Battery faulty?

Hi,
My battery life/indicator has been behaving very strangely since yesterday, so I'm wondering if the battery is dying. I know about battery calibration, and attempting it hasn't solved anything. I haven't flashed any firmware recently.
When I plug in the charger while on, it almost immediately tells me it's 100% charged, but the number displayed will still be something low, like 50ish. When I unplug it, the number stays. It drops extremely quickly, to around 1-2%, then 0% and turns itself off. After turning it on again, it may rise to 10%, but drop again to 0% shortly thereafter. After a couple of times of turning it back on, it will refuse to turn on. Charging only seems to work when phone is off, but even then the charge won't last much more than a couple of hours of idling - no calls, no web, nothing.
I've tried charging to full while phone is off (drained), and removing battery stats via cwm before booting up. Doesn't help.
Is my battery faulty? It's a very sudden problem, and my battery has been lasting me for days before this happened

So, I got a new battery. The problem persists. I've tried a factory reset/wiping battery stats, but it's still that way. Could this be a hardware problem somehow?
Any advice is greatly appreciated!!

Which fimware are you on? In your case I'd go back to a stock firmware from samfirmware.com and test once again. If the problem persits, you likely have a hardware issue and I'd have it swapped for a new phone whilst within warranty.
BTW: http://forum.xda-developers.com/showthread.php?p=21612299

I'm using tweaky rom, JVS. I'm not too sure what the local firmware is (Singapore), the one I had before I switched to custom was 2.1, and I don't feel too safe flashing bootloaders when the phone is prone to turning off...

nwsk said:
[…] I don't feel too safe flashing bootloaders when the phone is prone to turning off...
Click to expand...
Click to collapse
yeah, you are absolutely right. Have you tried betterbatterystats? ( http://forum.xda-developers.com/showthread.php?t=1179809 ) It will show you wakelocks when your phone should be idling.

Did it help ?
Mate, out of curiosity I was wondering if your issue got resolved.
Also, you should check what is draining off your battery.
I tried reading elsewhere and found "Battery Monitor Widget" could be useful for you to identify this.

Nope, still same problem. It's not a wakelock issue, because the battery dies /so/ fast. I can literally charge it to 100%, unplug the charger, and in 30 seconds it says 0% and turns itself off. The phone itself isn't running hot or anything, and seems to be just idling. [Edit: To clarify, it also charges to 100% in about 10 minutes or so. I'm guessing that for some reason the phone thinks the battery is 'full' and stops charging, leading to the quick drop. I've no idea what could cause this though]
I'm hoping that maybe it's a software issue now since the new battery isn't working either (the battery is probably a fake since i got it for cheap, but even then it should last at least a few hours before draining), and that the phone is confused with battery voltage levels or something when I put the new one in.
Anyway, I flashed JVU stock, didn't even root, and will be charging the new battery overnight while phone is off. It says 100%, but gonna leave it on charger anyway. Hopefully if I wake up tomorrow it'll be working :/
If that doesn't work, will be flashing DXJV9 (My original firmware was dxj4), and hope that it's the official one here. Then bring it to a service center and act dumb and hope they can fix it i guess...

Service center replaced motherboard. There goes a hundred bucks :/

[Q] Something strange with battery

My galaxy ace is totaly crazy now.
I took it from charger, after 20 minutes it 50%, after 5 minutes i get warning and it reboots. After booting it show me warning and again reboot. After 5-10 times it just blinking. I cant go into recovery or even turnt it of.
I pull out battery, wait a minute, insert back. Then I connect charger and boot device...and the battery is 100%! what is going on?
i've already:
re-flashed 3 firmwares
cleaned battery stats
here you can see how big is battery drain and a fact that battery is nearly 100% after connecting charger.

buffon95 said:
My galaxy ace is totaly crazy now.
I took it from charger, after 20 minutes it 50%, after 5 minutes i get warning and it reboots. After booting it show me warning and again reboot. After 5-10 times it just blinking. I cant go into recovery or even turnt it of.
I pull out battery, wait a minute, insert back. Then I connect charger and boot device...and the battery is 100%! what is going on?
i've already:
re-flashed 3 firmwares
cleaned battery stats
here you can see how big is battery drain and a fact that battery is nearly 100% after connecting charger.
Click to expand...
Click to collapse
Try a different battery... Even borrow one.

ApriliaM3 said:
Try a different battery... Even borrow one.
Click to expand...
Click to collapse
If it actually is a battery problem, why isn't he able to turn off his phone? Any ideas?
Sent from my GT-S5830 using xda premium

Venomous Viper 119 said:
If it actually is a battery problem, why isn't he able to turn off his phone? Any ideas?
Click to expand...
Click to collapse
Hard to know but it could be that the voltage from the battery is so low or fluctuating so much that the power switch is unable to function.
Similar to your TV remote where you sometimes need to jiggle the batteries slightly to make it work properly.
The first thing I would try and rule out is the battery... it's a relatively easy and inexpensive fix if that's the problem (ebay is your friend).

buffon95 said:
My galaxy ace is totaly crazy now.
I took it from charger, after 20 minutes it 50%, after 5 minutes i get warning and it reboots. After booting it show me warning and again reboot. After 5-10 times it just blinking. I cant go into recovery or even turnt it of.
I pull out battery, wait a minute, insert back. Then I connect charger and boot device...and the battery is 100%! what is going on?
i've already:
re-flashed 3 firmwares
cleaned battery stats
here you can see how big is battery drain and a fact that battery is nearly 100% after connecting charger.
Click to expand...
Click to collapse
Don't excessively flash ROMs
revert to Stock ROM for the timebeing
And don't Delete/wipe battery stats because after every successful 100% charge the battery_Stats.bin file gets deleted and regenerated.
so deleting that bin file wont help
next,check if the contacts of your battery are intact and that they are not covered with dust
when you connect the charger cable to your phone then check if the cable is properly inserted or not,if no then insert it properly
If none of this solves your problem then i must say mate that you need to change the battery.

are you sure that it is a battery problem? :-?

ApriliaM3 said:
Hard to know but it could be that the voltage from the battery is so low or fluctuating so much that the power switch is unable to function.
Similar to your TV remote where you sometimes need to jiggle the batteries slightly to make it work properly.
The first thing I would try and rule out is the battery... it's a relatively easy and inexpensive fix if that's the problem (ebay is your friend).
Click to expand...
Click to collapse
I can take that into consideration but the analogy you gave doesn't seem to be that convincing. Sometimes it may be due to the unclean android system that causes all this & I best know how it drained my battery in less than 30 minutes but I still use the same & it lasts a day now. But it may even be the battery or may be anything else. Who knows? !:screwy:
@OP : Try a full wipe & a reflash. If that doesn't help, go to the sammies or buy a new battery.
Sent from my GT-S5830 using xda premium

0% battery after crashes

So I've had this phone for about a year now, the moment I got it I unlocked the bootloader, rooted it and flashed cyanfox (cm11 fork) onto it.
It's been serving me great ever since, no problems whatsoever with it.
But as of a few days back I found it with a black screen, unresponsive. I connected the charger and it light up the green led solid, tries to boot but can't get past the boot loader message
This continues in an almost endless loop until getting to a 'battery 1%' screen with it showing the battery. After that I'm able to boot it up without problem
I first thought that was the end of it.. I finally got it too boot all seemed fine, battery showed 3% at start up bit voltage was suggesting it was 100%. It flashed to 100% later.
Good, no problem until then. But when leaving it over night to charge and disconnecting it from the charger this morning it turned off again. And now it's back in the bootloop when on charger :crying:
also important to mention is that when it crashes and gets into the bootloop on charger(0% battery and all) it was at 50-100% before the crash.
If anyone has any ideas what might be the cause I'd be very thankful
Main problem(s):
-random crashes instantly rendering battery % as 0 while there is still charge
-getting atrix hd to turn on at <1% battery
Some maybe useful information:
-it does say 'battery OK' in fastboot while connected to the wallcharger
-after I get it to boot it will run just fine on battery and charge as normal, but will crash/brick again after some time
-I can get into boot selection screen and fastboot, but only on wallcharger
-I cannot get to fastboot when connected to use, pc doesn't see the phone
-It won't boot past the bootloader('Motorola logo' for you on not unlocked bootloaders) no matter the boot selection(recovery, bp tools etc)
-This is a second hand model already in use by me (the second owner) for over a year now
-no custom kernel, only rom, cyanfox 4.4.2 (cm11 based)
-the few times it got past the bootloop and I was able to boot was on my aftermarket charger (stock charger will make the green led light up but no proof of being able to get past bootloop over time on it)

I've had dead batteries before.. and since It looked good last time I got it on (it won't go on at all now) I was skeptic about the battery being dead. But a quick test of the multimeter gives me <1v :crying:
I know batteries can be drained pretty bad.. but this just seems a bit extreme.. I'll try to get it to boot for a while.
Thanks in advance for any helpful solutions or ideas on the matter
EDIT: Got it on again last night, turned off this morning when pulling out the charger, was at 100%. Checked battery and again read around 1V.
blaming the battery, ordered a new one just in case, should be here in a month or so. Still open for suggestions on the matter

Catblaster said:
I've had dead batteries before.. and since It looked good last time I got it on (it won't go on at all now) I was skeptic about the battery being dead. But a quick test of the multimeter gives me <1v :crying:
I know batteries can be drained pretty bad.. but this just seems a bit extreme.. I'll try to get it to boot for a while.
Thanks in advance for any helpful solutions or ideas on the matter
EDIT: Got it on again last night, turned off this morning when pulling out the charger, was at 100%. Checked battery and again read around 1V.
blaming the battery, ordered a new one just in case, should be here in a month or so. Still open for suggestions on the matter
Click to expand...
Click to collapse
Did you fix it somehow in the end?
My Atrix HD freezes after several minutes(sometimes even on wall charger). Bought new battery, tried to reset everything: usb storage, cash, system, factory reset. Went back to ROM I was using before(stable) but didn't help.
?

michael8s said:
Did you fix it somehow in the end?
My Atrix HD freezes after several minutes(sometimes even on wall charger). Bought new battery, tried to reset everything: usb storage, cash, system, factory reset. Went back to ROM I was using before(stable) but didn't help.
?
Click to expand...
Click to collapse
It ended up being the battery, all problems were gone after I changed the battery.
Which in the end wasn't so bad because I'd been wanting to upgrade my eb20 to an eb40
No Idea to what it could be in your case.
Everything working appart from that? no battery hickups or things not working properly?

Catblaster said:
It ended up being the battery, all problems were gone after I changed the battery.
Which in the end wasn't so bad because I'd been wanting to upgrade my eb20 to an eb40
No Idea to what it could be in your case.
Everything working appart from that? no battery hickups or things not working properly?
Click to expand...
Click to collapse
"0% battery after crashes" that is what was happening in the begging, so I thought it is the battery. I changed it to UB40
but everything's got worse. With the new battery I have crashes even when the battery is almost full.(but not always, for example I can play movie from youtube normally, but when I try to send sms or something else it crashes ).
Hard to believe that there is something with the new battery(I have it just one week+It took a month to ship from ebay).
I tried to flash another ROM, but still have freezes.
Last thing sometimes battery charges normally but then suddenly jumps to ~100%. Now I try to flash Stock ROM, but eventually soft bricked the phone. (+had "battery low" in fastboot, while charging animation was saying 100%)
Where did you buy EB40?
____________________________________
It turned out that EB40 battery was bad, after replacing it with another one everything work

[Q] Battery problems

Hello, lately I've been having some battery drainage issues with my Huawei Ascend P7.
For some reason it drains really quickly (sometimes even when the screen is turned off). Sometimes my battery jumps from 40%+ to 15% and when I plug in the charger, it jumps back to 30%+ really fast.
My phone is rooted, I'm using Doze and Greenify to save some of the battery when the screen is turned off and I also have "Screen power saving" option turned on.
I have taken some screenshots of the battery usage and one of my phone's specifications.
Does someone know what might be wrong with my phone or could there be something wrong with the battery all of a sudden?

Did you try to reinstall Android new?
Or at first a factory reset?

RangerP7 said:
Did you try to reinstall Android new?
Or at first a factory reset?
Click to expand...
Click to collapse
I flashed B852 package's recovery and boot. Then rebooted to recovery mode, wiped data and cache, then rebooted to install mode and installed B852 ROM (dload/UPDATE.APP).
The phone turns on fine, but the battery percentage just drops so quickly and once it even shut off when it was at 60%. When I tried to boot it back up it said it was outta battery.
And one time when my phone turned off and wouldn't turn back on, I plugged in the charger and it told me the phone still had 32% battery. I turned on the phone, unplugged the charger and it shut off in a minute or two. When I plugged the charger back in, it still told me I had 30%+ battery left.
I think the problems began when I flashed https://forum.xda-developers.com/as.../kernel-huawei-ascend-p6s-p7-k-tuned-t3355223 kernel. But I installed a clean B852 ROM and the problem still persists.

Thats really strange, but this kernel is not the problem.
I also have a P7-L10 B852 and using this kernel without any problem...
But right after installing this kernel I also had some strange problems...
Sometime my phone rebooted it self or if it was locked and I pressed the power button to wake it up, it just stayed black and it got really hot...
I don't know what py phone did at this moment because if you are looking at the battery info in settings, it says my phone just was turned off and even lost battery but it wasn't really off...
My solution was a clean install (erasing and flashing every single image and after that 3-button-method)
After that boot up your phone
Now shut it downs install the kernel again
Boot up
Shut downs
(Maybe flash original boot.img
Boot up
Shut down)
Install kernel again
Boot up
I'm using this kernel for more then a half year now and I don't face any problems anymore...

I think the battery itself was the problem. I removed the back cover, removed the battery and cleaned the connector pins with alcohol. When I turned the phone back on about 30 minutes later, under "Power saving" smart power plan option shows me the phone will last for 11 h 30 min at 83% (WiFi turned on), when it used to be like 2-4 hours at 90%. I'll keep monitoring for a while to see if the problem is truly gone.
Thanks for your help.
//edit1: Never mind, I tried playing with the CPU voltages and it froze, so I turned it off. Turned it back on and the problem was back. It jumped down from 80% to 14% and in a minute or two, the battery died. When I booted it into recovery, TWRP says I still have 34% left. So I rebooted into system, it showed me I did have 34% left, but it turned off. Going to try your advice now.
//edit2: Got it to work properly again. Hopefully I won't touch something that will mess it up again.

Maybe your battery itself is the problem but to proof that you will need a second P7 to change batteries of them...
But such extrem battery-problems I have never faced...
You could send it to Huawei support, maybe they will say you if your battery is damaged...
So you could buy a new one and change it

Have you tried calibrating your battery?

I don't think it's a calibration problem
But if you want you could try it...
Charge your phone to 100%
Now delete the batterystats.bin at /data/system
Reboot your phone
Use your phone normally and let it discharge right before it's shutting down it self (3% I think)
Now charge it again to 100%
While charging your phone you should not touch it or unplug the charger

Last night I went to sleep with the battery being at 90%+, woke up to my phone being dead (the alarm didn't go off).
Tried turning it on, it showed me I had 50%+ battery, but it turned off shortly after. I plugged the charger in, and it said I have 58%.
And yes, I have tried calibrating my battery. But I can try doing it again when I get back home from work tonight.
//edit: Battery calibration didn't help. I'll just have to wait until the new battery arrives. Or should I try locking the bootloader?

Why you want locking your bootloader?
Do you want to send it to the support
If you already bought a new battery, wait for it and put it in

Seems that the battery itself was the issue after all. After putting in the new battery, everything seems to be back to normal.