[Q] Odd Battery Behavior - Nexus One Q&A, Help & Troubleshooting

A couple of days ago the battery on my N1 ran out of juice. After I got back home and got a chance to plug the phone back in, I noticed the battery now doesn't charge above 54%. I've tried another battery and it's the same story, won't go past 54%. I've left the phone off and plugged in for over 12 hours and still, just 54%. I also noticed that the battery usage history does not get cleared after cycling the phone off and on. Lastly, leaving the phone on and plugged in does actually results in the battery discharging. Any help troubleshooting this would be appreciated.

Are you rooted? If so try wiping battery stats in recovery. If not then try and see if when you use it, it lasts as long as it does normally at 100% (I think it probably will) and try and run the battery to 0% and back to 100% (or what ever you can get it to) and see what happens.

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[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?

battery acting weird

hey everyone my sister has a milestone and she is having trouble with the phone battery. she says that she fully changes the phone and then at any point, the phone shows the sign that the battery is discharged and then reboots... then the battery shows the charge again, I tried moving from stock to cyanogen which took the problem away for some days but today it happened again. what can it be help!
hmm. i dunno. anyone?
the weird thing is that she just got it back from warranty... the screen was not working
Sounds like a battery problem. I once had my phone show 1% battery-level for like 7 hours (!) before it shut down. Some other time it would show 100% even though it just had been charged for minutes (starting at 5%). I fixed both issues by recalibrating the battery (search the forum, there's lots of info, most OR even have a script for that). I also leave the phone connected to the charger a couple of hours longer even after it says it's fully charged.
But if the phone actually reboots even though the battery has been fully charged, it really sounds like a hardware problem.
try a new battery
Before buying new batteries, just try calibration.
For me, the mentioned case of shutting down with a so-called empty battery was happening only with a stock 2.1.
Since then this issue never occurred again. So a faulty battery is not necessarily the first answer.

[Q] Previous problem with phone reporting no charge

I realized the mistake in my title...reporting NO charge.
I previously posted about how after clearing my battery stats it was reporting a 0% charge. I was able to leave it on the CWM screen for upwards of 5-6 hours, but the instant it loads up the OS the phone buzzes and turns off.
Now:
I got a new battery today and it appears that the battery is NOT the issue. The phone still reports a 0% charge, regardless of how long I leave it on the charger.
I'm unsure of how this could have happened, and I was curious if there was a way to completely reset the phone. IE: Every file exactly where it was when I first booted it up.
Any help would be great. I have an XPERIA Play as a back up, but I'd rather have my Thrill back.
Thanks in advance.

Battery %100.-0% in over night

I charged my battery. Took it off the charger and turned off the screen. When I woke up the phone was off and I dead. I am on cm12.1 fairly recent update. I updated a couple days ago. I just want to know if anyone else had this issue?
Only time thats ever happened to me is when I was camping in the woods. Like it was searching for a signal all night and killed the battery.
I had something similar happen to me over the weekend. I mostly use a Choetech Qi charger, and pulled it off the charger Saturday morning before heading out for a day of motorcycle riding. After the ride...~6hrs later my phone still showed 100% battery. As I was catching up on emails etc..the phone just shut itself down. I rebooted...then it shut down again within 30 secs of use.
While it was still off, a quick press on the power button popped up a battery image showing 0% battery. Within 2 seconds of plugging in a charger...it jumped to 100% again. But the phone would not stay on, unplugged at all. I tried wiping the cache hoping that would clear out the battery monitor, but not luck there. The only that worked was turning the phone off, plugging in the OEM Turbo Charger, and letting it charge over night.
Do you have any app monitoring battery usage like betterbatterystats or gsm battery monitor?
sometime obviously kept your usage on while you slept. not normal. either searching for a signal all night, or a misbehaving app, etc. y
I do not have currently have any 3rd party monitoring app. But it's probably not a bad idea. I just think that something with the wireless charging eventually whacks out the battery calibration. As long as I can "reset" everything with a night on the Turbo charger, I can deal.
radon222 said:
I had something similar happen to me over the weekend. I mostly use a Choetech Qi charger, and pulled it off the charger Saturday morning before heading out for a day of motorcycle riding. After the ride...~6hrs later my phone still showed 100% battery. As I was catching up on emails etc..the phone just shut itself down. I rebooted...then it shut down again within 30 secs of use.
While it was still off, a quick press on the power button popped up a battery image showing 0% battery. Within 2 seconds of plugging in a charger...it jumped to 100% again. But the phone would not stay on, unplugged at all. I tried wiping the cache hoping that would clear out the battery monitor, but not luck there. The only that worked was turning the phone off, plugging in the OEM Turbo Charger, and letting it charge over night.
Click to expand...
Click to collapse
Radon,
I'm seeing nearly the same problem, but mine is at 80% not 100%. I tried doing a full charge on a standard (non-Turbo) charger overnight, and it changed things, but still not in an acceptable state. Did you try using a standard charger? Or did you only try the Turbo charger?
Verizon and Motorola are telling me I need to do a factory reset and/or get a new phone, but I'm trying to do my research first.
Clear the app cache (Go to Settings->Storage then click on Cached data and hit OK). Then reboot into recovery to wipe the cache there (note it'll take upwards to half and hour so don't freak out if it looks frozen). Then turn the phone off and leave it on the factory charger overnight (or for a while after it reads 100%) with the phone still off. This clears the cruft to fix misbehaving apps, then calibrates the phones understanding of what a full charge is. You also might want to delete any apps you no longer use, especially ad-ridden games, system hook apps like keyboards, and things that track location or status which might keep the phone awake.
After I shattered my screen on my last turbo and got a replacement I've been having issues with my battery. It would randomly die and wouldn't respond or let me turn it on without connecting to a charging cable. Sometimes it goes from a good charge to 39% and turns itself off but often, like I observed today, when I looked at my battery trend it actually went from 75% to 8% in an instant. Not sure what the cause is. Could the battery be discharging somehow??

Weird Battery issues

So my turbo just turned 2. For the past 6 months or so been having some weird issue. I was on RR Remix for a while, then went to CM14 by BBH27 for a while, and then back to RR, and now on ComputerFreak Stock. I don't have any issue with charging the phone. Quick charge works just fine.
I have had issues where the battery will just be dead even if it was at like 50% and confirmed charging.
I thought maybe it was my stupid charger (I have another that I have yet to test) but then last night, after charging my phone before I went to bed i unplugged it. I woke up around 6:45 to find my phone once again dead. It looks like around 2 am the battery just fell. Dead. Just gone. I go and hit the power button and i got 1%. The battery graph looks as if i turned the phone off. For the most part my battery last all day 12+ hours with some good usage too.
I'm getting ready to flash back to stock now that full stock MM is out now to flash and see if that makes any difference.
For what it's worth, my Turbo would just straight up shutdown when I was on RR. And not go through the shutdown process, just crash to a powered off state. It would happen if the battery was full, low, or anywhere in between. I don't know if that's the issue you were experiencing, but I suppose it's possible.
My daughters is having the same issue.
Anyone have a solution?
I've tried clearing caches, battery recalibration, etc.
Going to see about doing a fully clean install tomorrow if she is okay with it.
When this happens and the phone just shuts down, does the battery percentage immediately jump back up when you plug in a charging cable? I was having that problem when using wireless charging a lot. It turned out be a battery calibration issue. You can re-calibrate by holding the power button and KEEP holding it when the "Power Off" dialog pops up. The phone will eventually reboot itself then leave it overnight on the factory turbo-charger.
One warning - Since the marshmallow update, performing this procedure seems to wipeout your BT connections.

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