Battery is fully charged but os reporting low? - Nexus 7 Q&A, Help & Troubleshooting

Ive had a good look but i cannot find anything on this particular behaviour. Please could anyone help, its driving me round the bend now!
The battery will not charge past about 15 to 20%, no matter what, or how long I charge it (used original charger, plus another couple rated at least 2A, no difference). Ive had the back off and measured with a multimeter directly across the battery at this point, which reads around 4.2v, which is fine, thats what a fully charged cell should be. However, in this fully charged state, with a number of battery apps that read voltage from the os, it reports only 3.7v. Similarly, when the unit reports around 3.5v, consequently turning off, the battery is actually still at 4v!
I just dont get it, i cant seem to get it to correct itself, ive tried everything. Does anyone have any other ideas? Cant be the battery, its reaching full charge just fine, and is not nearly becoming discharged.

This is strange, have a look at this battery history screenshot, after staying for hours on 20 to 30% it jumps straight to 2%, while still on charge. And also once its shut down, i turn it straight back on again and its miraculously got 20 odd percent back in it. As you can see it keeps doing it. Anyone?

Someone recommended me this app against slow charging problems in another thread on xda. However I haven't had time to try it out yet.
Years ago my Moto Defy+ only charged to 80% because I had flashed the wrong firmware. The correct one restored the normal behaviour. So, it's just an idea, but you could try to flash a factory image, to make sure it's not a software issue.

Related

Strange battery issues

I'm running a Sprint Mogul using no2chem's nueROM 2.2 Preview 7 (8's touchscreen issues made me downgrade), and having some very peculiar battery problems I'm hoping someone has advice about.
A few weeks ago I woke up, pulled my phone from the charger, and watched the battery instantly drop from 100% to around 83%. Over the next 15 minutes it dropped to the mid-70s before leveling out and discharging at a more normal rate. This occurred the next day and so on. Now this was with Seidio's 3200mAh extended battery. I then switched to my (sigh) OEM battery and didn't have the same problem, so assumed it was Seidio's battery, filled out an RMA, and sent it off to be repaired.
Now a couple of days ago the OEM battery started doing the same thing. I'd pull it off the charge and it would have somewhere in the range of 60% battery remaining. I'd have to plug it into my car charger or USB cable on my notebook to charge it up the rest of the way (albeit very slowly).
This morning I decided to watch the process from before I even unplugged it. First I noticed the orange light was on after a full night's charge. If memory serves me, the light's supposed to go out when it's at 100% (I may be mistaken). Meanwhile the battery meter was at 60%. I unplugged it and it remained there. I plugged it back in and watched no2chem's charge meter show the power connection, and I went ahead and left it plugged in for a little while before checking it again. It was now at 63%.
So what I'm finding is that at some point during the night my phone stops accepting a charge, despite the charge light remaining on.
I'm going to experiment with two things to further troubleshoot: tonight I'm swapping chargers with my wife's. I'm pretty sure the phone controls whether or not it's continuing to charge the battery, but I'm going to rule this out the only way I can. Then if that doesn't improve it I'm going to flash back to a Sprint official ROM (sigh) and see if maybe no2chem's power applet or power management settings are somehow causing this oddity.
Does anyone have any extra experiences with problems like this that might give me an idea of what else to try? Otherwise my thinking is if those two steps yield no improvements, then it's the phone's physical battery management hardware that's faulty and I'm going to have to use my insurance to replace the phone. I'd like to exhaust all the other resources before I spend the $50 on the deductible, though.
Thanks!
sometimes mine overheats while charging, at that point the LED flashes orange until it cools down enough to resume charging, this might be happening to your in the middle of the night
I thought I heard purple meant overheating. Either way, it's not clearly describing it. Also this has never happened before, so if it's happening every single night now, I've definitely got a problem.
Anyway, just plugged it in with my wife's charger. Let's see how it turns out in the morning.
You said :
"I'd have to plug it into my car charger or USB cable on my notebook to charge it up the rest of the way (albeit very slowly)."
Sure sounds like a bad charger.
worwig said:
Sure sounds like a bad charger.
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Now confirmed. Just pulled it off my wife's charger after a full night, at 100%. Five minutes later, 99%. Much better. I wonder what would cause the charger to stop charging halfway through the night, but keep the charge light on. Well, at least the mystery's been solved.
I am sort of having the same issue. A couple of weeks ago I decided to upgrade from the standard Verizon ROM for my xv6800 to DCD's 3.2.2 ROM. The upgrade went perfectly. I always plug in my phone every night before I go to bed. The light turns orange while it is charging and then it is green when I wake up. The phone always showed 100%. Now with the updated ROM, I do the same, plug in before I go to bed, the light turns orange, and it is green when I wake up. But, when I look at the battery level when I unplug it, it is usually at about 94%. The battery level also seems to go down quicker than before, but I figured that had to do with the GPS radio and WM6.1. Why do you think the battery would no longer show 100% when I unplug it? Seems very weird that right after I upgrade the ROM my battery would start failing.
jeffgman said:
I am sort of having the same issue. A couple of weeks ago I decided to upgrade from the standard Verizon ROM for my xv6800 to DCD's 3.2.2 ROM. The upgrade went perfectly. I always plug in my phone every night before I go to bed. The light turns orange while it is charging and then it is green when I wake up. The phone always showed 100%. Now with the updated ROM, I do the same, plug in before I go to bed, the light turns orange, and it is green when I wake up. But, when I look at the battery level when I unplug it, it is usually at about 94%. The battery level also seems to go down quicker than before, but I figured that had to do with the GPS radio and WM6.1. Why do you think the battery would no longer show 100% when I unplug it? Seems very weird that right after I upgrade the ROM my battery would start failing.
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DCD roms included new code to show 1% changes. The original code showed 10% changes only. Originally, you likely saw 100%, 90%, 80% etc. Now you see 95%, 94%, 93%, etc. It seldom goes to a perfect 100% and it LOOKS like it is discharging faster. In reality it is simply showing more detail.
worwig said:
DCD roms included new code to show 1% changes. The original code showed 10% changes only. Originally, you likely saw 100%, 90%, 80% etc. Now you see 95%, 94%, 93%, etc. It seldom goes to a perfect 100% and it LOOKS like it is discharging faster. In reality it is simply showing more detail.
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Yes, I noticed the 1% increments, I figured it was Windows Mobile 6.1 compared to 6.0. I think the old method was reporting in 5% blocks.
So, your battery never shows 100%? Very weird. So, my battery is probably fine and it is probably behaving just like it always has?
Thanks for the information.

Major Battery Issues

I've been having problems with my battery for a week now, I noticed it wouldn't charge to 100% so that the green light comes on it will just goto 99% and then stay there. The battery then drains so fast, like literally I will be on 1% in an hour and a half.
So I tried a full reset of the phone and that didn't work. I also bought a new battery and that didn't work so I'm guessing the phone might well be knackered.
Also the phone seems to be really hot I never noticed it that hot before.
Any suggestions would be much appreciated.
Replace battery immediately! Do not attempt to charge it anymore, it could go very bad!
I did, I bought a new battery and the same thing happens.
I have to have it on charge constantly all day.
Maybe charging control unit(in phone) is damaged, or charger is not working properly.
Can you check voltage on charger?
Also are you sure you use original battery manufactured by HTC?
Right here, my problem

Very bizarre charging behaviour from 2012 N7!!

Ok I've not seen any threads quite like my issue, so I'll try to explain best I can. Ok, here I have an N7 (2012) wifi. Now, I work in electronics therefore know a bit about charging etc, so I've got the back off it to measure the voltage directly at the battery terminals. I have 4.2V across it - which is about as high as you want a 3.7V cell to reach at full charge. Also the unit (powered off or on, with screen off) is drawing about 17mA from my bench PSU (set to a 2.5A limit, @ 5.25V), which is what I'd expect of a full battery, along with the fact it's up at 4.2V.
However, and this is the bizarre bit - unplug it, and the unit bleats away saying there's 5% battery left. So, back in with the power, it says charging. Leave the screen to go off. Check it about an hour later, the unit isn't switched on. Boot it up, it bleats again saying 2% left. Take out the power and put it back in. Charging again (allegedly). So I look in the battery section of settings to see what had occurred over this last hour or so... and according to the graph, while I had left the unit to charge, it rose from 5% to 15% over a period of around half an hour, then steadily DISCHARGED for the next half hour right down to 0, and switched off !! Situation now - it's "charging", and has been sat at 2% for about two hours. However, as expected, on another battery check, guess what - still at 4.2V - fully charged, about where it has been throughout. Well the lowest I saw it go was actually 4.13V.
Any help would be appreciated here, as I can't see what the problem is, other than the battery is full and the os thinks it's empty. It was doing this on android 4.2, and I've since updated it to 4.3, and then 4.4.2. Same results, no change. I've also performed a factory reset via the os, and a hard reset (factory wipe/reset) via recovery. This is really strange, never come across this ever before. As I say, I've seen lots of battery issues experienced by N7 2012 owners, but nothing quite this odd!
Here's a screenshot of this evening:
Stranger and stranger. Long spell of charging, then it goes straight to 0%. So I leave it turned off for a while (not connected to charger), then turn it back on and miraculously it now has 32%! Which then jumps straight to 0 a few mins later. Now switched back on again, and it's back up to 24%!! See attached.
Bizarre.
Your situation is unusual, for sure. I had a situation where a rogue app consumed power faster than my N7 charger could supply it. Killing the app stopped the madness. Have you checked battery usage?
I would reinstall your ROM, as corrupted software seems to be the likely cause.
First thing I would check before messing with reinstalling ROMs or similar actions, is take the back off the device, and ensure the battery plug is firmly seated and not loose or crooked.
I had similar erratic behavior pop up all of a sudden, and this was the culprit.
Yep done that, it's on official 4.4.2, also done a factory reset and a hard reset, neither made a difference. The thing is, the battery voltage is around 4.1 to 4.2V at all times, indicating it's fully charged. Checked connector as well, no loose connections at all. Very odd indeed.
When I first got my nexus 7 1 year ago
I got the same problem
Then I found out it was the stock charger
Then I got a 2.1a charger and that fixed the problem.
My battery never got to 5v
4156mv = 4.1v
And it charges at 1500ma
If it were off then it will be 2000ma
remove the battery and put it back, it may help and also charge while it's turned off
USBhost said:
.... 41560mv = 4.1v
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You sure about that??
spark001uk said:
You sure about that??
Click to expand...
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No lol the 0 should not be there
USBhost said:
No lol the 0 should not be there
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Ah OK, thought so! Also when you say your battery never got to 5V, did you mean across the battery itself? If so 4.1V sounds almost fully charged to me. It's a 3.7V li-po so 4.2V across it would be the absolute max.
Also I have this handy little gizmo, tells me precisely how much current I'm pulling on a USB line, and also the voltage.

Are you facing the "Dash Full Charge" issue?

Ok....
I think it's not new that we have a problem here.
Some of the people who got OnePlus 5,
Facing an issue when charging that it charges up to 80%-90% with the Dash Charger.
And then simply stops, and to charge to 100% we use regular charger (Not Dash Charger)
https://forum.xda-developers.com/oneplus-5/help/oos-4-5-8-dash-charger-t3652711
https://forums.oneplus.net/threads/never-fully-charged.599409/
https://forums.oneplus.net/threads/charging.600540/
https://forums.oneplus.net/threads/battery-problem.601016/
Click to expand...
Click to collapse
And there are more evidence of the issue.
We need to deliver the massage to OnePlus.
So please tell me, your facing the issue too?
Reserved
...
---------- Post added 14-08-2017 at 12:03 AM ---------- Previous post was 13-08-2017 at 11:43 PM ----------
The power input in lowered after the phone has charged to 70%+, which results in slower charging speed.
It's done to preserve the battery and to allow more charging cycles in the long run.
So, it's not a bug. It's a feature.
As @sufoalmighty said, it's not a bug, it's a safety feature to keep the battery healthy.
Ok look.... it just stops and the phone says not charging.. i don't really know why
Hi Guys,
It's a real issue and I'm experiencing it. Plus, there are few threads about this on Oneplus forum and Reddit:
here: https://forums.oneplus.net/search/13523112/?q=dash+charging&o=date&c[title_only]=1&c[node]=265
and here: https://www.reddit.com/r/oneplus/comments/6r0403/oneplus_5_dash_charge_stop_at_83/
I even had an error message on the phone when trying to charge it more than 85% when off... Everytime I briefly pushed on the power button to see if it was charging properly it said :
"Device temperature is too low. Can not charge"
Talked to Oneplus support twice, they escalated my ticket. But I have no news from them for 3 days now... I think the best could be having them akcnowledge there is an issue, even if it's gonna be painful for them for some obvious marketing reasons...
What do you think ?
If your phone actually entirely stops charging, it is a bug, probably a hardware problem with your charger, as a person on the linked Reddit thread said. Try a different DASH Charger first. If it did start after the update, you could always flash back and test it against tests of the new one and send them that information. Saying that it stops DASH charging isn't very clear and contains no information OnePlus can work with. Download Ampere and check it with the cable plugged in after 80% to see what value is showing, or use the *#808# menu to test the same. Post results, including a picture clearly showing the screen and the fact that it is plugged in [take it with another device].
Experiencing the same issue as @the_david. My OP5 is 5 days old, received it with stock firmware (4.5.3 I think, not sure) everything was fine. Updated to 4.5.8, rooted, installed magisk etc... Wanted to charge it after some days, but with the dash charger it stops completely at 75%. Turning of the phone shows battery temp to low (was at 33°C).
A non-dash charger will charge to 100%. Cache & Dalvik reset had no effect.
Edit:
I let the phone discharge to 0% and tried to charge it with the dash charger. I saw the dash charging symbol in the "bootloader" & blue LED, however it stayed stuck at 0%. With another charger I was able to load it to 2%, afterwards used the dash charger to get it up to 80%.
Got a replacement charger and the issue was gone
So, I got a new Dash charger and... It fixed the issue. It seems there are some problem with some dash charger series, especially if you bought your OP5 to a Chinese reseller...
Everything works fine now!
The problem in my case is the rom installed... Tried with RR and dash is ok up to full charge, but on stock oos up to 90% is dash and from there normal charge
No problems here. Dash charge till 80-90 percent and than charging values going slower and slower and slower up to 100 percent. So i guess i'm fine.
What i "do" like to mention is: When device is fully charged at 100 percent, within 10 minutes it drops very fast to 87 percent! than the battery seems to stabilizes itself. With each dropping percentage the battery is more and more going slower at discharging..
I don't know if that's normal behaviour, because i'm not familiar with OP5.. I came from Samsung.
Maybe somebody can explain this? or am i seeing it wrong?
It's strange.. i've a linear discharge.. have you tried a battery fix? Discharge all then charge until 100% from switched off phone.. Don't do this everytime because will damage battery... Or maybe it's just android that after sometime the battery percentage split to 2% at time... 100-98-96 etc..
Did that in the past with replacable batteries, also use battery calibration app (still a myth, but whatever). I never discharged this Device further than 10 percent (like you kinda mentioned it can damage the battery) and since it's hard to replace the battery i wont take the risk. Maybe my battery didnt even get the change to settle because of the many Roms and Kernels i Flashed over and over again, since i got my device for about 10 days now haha. I guess i need to give my battery more time to settle and don't stress it?
I was in your doubt too, since i've flashed a looooot of rom in about 2 days lol and i stressed really too much my phone.. But as i said up, i've noticed that the battery percentage (what we see in the statusbar and not the reality charge) depends a lot on which rom you're using... In this 2 days i've also charged my phone a lot of time, via dash charge or via pc (while copying files from computer to phone) and it seemed damaged in RR but when i reflashed back to freedom it has returned normally and today i have a very long life battery (charged this morning at 9:30 and now i still have 81%)... So in the end i think your battery is not damaged but have you tried a factory reset? PS: i've never discharged it under 20% PPS: and sure, for answering your question, i think that less stress (few charge)= more battery life so now i wait tomorrow to try another rom but today is the "My oneplus 5 rest day" lol

Droid Turbo 2 XT1585 Battery issues

So. My phone has this problem, and its pretty weird (IMO). It is possible that it is a hardware problem.
I going to work and I dropped my phone. Didn't think much of it. The phone worked fine for several hours. It started around 40% and only declined somewhat, until about 2-3 hours later where it dropped rapidly to 6%. It was in my pocket when it dropped. I figured at the time that I had just forgotten to turn the screen off, so it drained much more battery. I then plugged it in, and it charged for a little while on a non-turbo charged cord, getting to 21% (which is what it said when it was off). After I turned it on however, it was only at 12%. I didn't bother with it at the moment, but after about 5 minutes it dropped to zero in about 5-10 seconds from when it started dropping. This was concerning, but I had to go back to work so I plugged it back in. When I came back and rebooted it showed 11%, and it stayed at 11% for several hours while I was using it, even though I wasn't charging it. Then randomly it dropped super quickly and died. I turbo charged it overnight. In the morning I booted it up and it immediately shut down claiming there was 0% battery life. It will not boot up without being plugged in. This goes on.
Usually, I charge it for a while and it will give a higher number than it will say when it boots up. It sticks at that boot up number for longer than it should, then dies rapidly. Occasionally it will boot up to be 0% and immediately die. I have tried turning in on and off again (without it dying) and it wont turn back on claiming too low of power regardless of how charged it said it was before. I have tried various charging cables and wall outlets. I have tried several battery repair apps, which did nothing. I was going to try and do a root version, since I figured that would be better but cannot root it. (Using adb to sideload comes up with an error (signature verification failed), trying to flash twrp fails (pre-flash validation failed) and normal root methods fail.) Oh yeah, and I've also factory reset it a few times.
So it seems to me that it's a software problem, namely the battery driver, since it appears to be charging and holding a charge for the most part, but then shutting down randomly due to the driver saying it is at 0% battery life. Alternatively, it could be a problem with the battery or charging port, although nothing seems to be wrong with the charging port visually.
Also potentially of note is that my normal turbo charger, when plugged in, puts a lightning bolt icon in the battery symbol, but on battery usage it says not charging. This could also be the chargers fault, since it had begun to fail previously (only working at certain angles) but it worked earlier the same day and now doesn't.
I didn't install any new updates to the OS or installed any new apps before this occurred either.
Any idea whats going on and how to fix it?
EDIT: I've been trying to look up and see if there was a driver or something for the battery that I could reinstall but I couldn't find anything. So, I ordered a replacement battery of Amazon. Now the question becomes will that fix my problem if I replace the battery?
Think so this might solve your issue ,but getting it checked before ordering would be wise.
Going through your rooting steps , i didnt see that you unlocked your device thats why you are getting errors of signature verification failed.
There is no separate battrey driver for Android its the part of OS itself so you dont need to mess up with that area
Uh... yeah well, Droid Turbo 2's can't root. It wont work. The bootloader is locked up tight, even if you select it in developer options it does nothing.
JWeller said:
Uh... yeah well, Droid Turbo 2's can't root. It wont work. The bootloader is locked up tight, even if you select it in developer options it does nothing.
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HI,
has your problem resolved after replaced the battery?

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