Very bizarre charging behaviour from 2012 N7!! - Nexus 7 Q&A, Help & Troubleshooting

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
Click to expand...
Click to collapse
You sure about that??

spark001uk said:
You sure about that??
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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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Click to collapse
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.

Related

Wizard suddenly died yesterday

Hello,
I've a Wizard that is approximately 20 months old. Yesterday, before I went to bed, I set the alarm clock on the Wizard, put it next to bed and went to sleep.
This morning upon waking up I tried to switch on the Wizard but it couldn't. Firstly, I thought the battery was discharged, so I tried charging through USB on my computer -- it wouldn't charge or start. Then, I tried charging on the default charger -- again nothing.
I tried removing battery and soft reset - nothing. It's really weird, yesterday I left it working, no-one has touched it and today it's totally non-responsive.
Any ideas what might be wrong/how can I bring it back to life? Would a hard-reset help?
Regards,
1. how much charge was in the battery last night?
2. is your battery 20 months old also?
3. do you have a spare battery to try?
4. do you have many applications, music etc. on the device?
1. how much charge was in the battery last night?
Click to expand...
Click to collapse
Unfortunately I can't remember, however I have an alarm which sounds periodically when the battery is below 20%, so I'm guessing I had at least 20 percent. Could be wrong, of course, but most likely above 20%.
2. is your battery 20 months old also?
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Click to collapse
Yes, this is the original battery. Aprx. 20 months old.
3. do you have a spare battery to try?
Click to expand...
Click to collapse
I don't have that. I guess I could go to mobile phone service shack and check there. Do you think it's the battery?
4. do you have many applications, music etc. on the device?
Click to expand...
Click to collapse
The Wizard came with a 64MB card I think. I had around 10MB free space. 3-4 applications, 2-3 mp3s. Nothing unusual.
Same thing (sort of) happened to mine after about 187 months. I was using mine and it hung up. I hit the reset button and that was the end of that. Even when plugged in it does nothing. Tried a hard reset... nothing. Soft reset.... nothing. Dead. Zip. Nadda.
Good news? Replaced it with a Kaiser!
vivanov said:
Hello,
I've a Wizard that is approximately 20 months old. Yesterday, before I went to bed, I set the alarm clock on the Wizard, put it next to bed and went to sleep.
This morning upon waking up I tried to switch on the Wizard but it couldn't. Firstly, I thought the battery was discharged, so I tried charging through USB on my computer -- it wouldn't charge or start. Then, I tried charging on the default charger -- again nothing.
I tried removing battery and soft reset - nothing. It's really weird, yesterday I left it working, no-one has touched it and today it's totally non-responsive.
Any ideas what might be wrong/how can I bring it back to life? Would a hard-reset help?
Regards,
Click to expand...
Click to collapse
Mine died too when i was flashing...
Leave the phone in the original charger for a while and see if it picks up...sometimes it comes back to life by doing that...
If that doesnt work, try a new battery, you might be lucky...
A somewhat strange development occurred today:
Today (3 days after it stopping working) I randomly tried to switch the Wizard on and it indeed switched on. It showed that it had 0% battery. It didn't even show 0%, basically the battery charge graph was empty - no number, no fill, nothing.
While it was on charge the charge light was on (while it was 'broken' the charge light was off when I tried to charge). So I left it to charge and when I checked back in 15 minutes it was back to being 'dead'. Can't be started, no charge light, nada.
I don't really know what's going on, however I'm highly suspicious of the battery. Currently, I'm periodically trying to switch it on again so I can backup my data.
Any ideas what might be wrong with it, do you think it's the battery or is it more serious?
Regards,
The battery won't charge if it gets to low.
There is a thread about using a 9V battery to get the battery up to a level so it will charge. I don't have the link for it, try searching for it or maybe someone else will reply.
You might have a bad battery. I bought a new battery because I didn't think I was getting the life that I should. I tried using the old battery about a month after when I had to run out and my main was low. About 15 minuets later my phone started shutting of and rebooting. That was the end of that battery.
Yep, it's possible. If the battery is to empty, you can't charge the phone. It is stupid but it's just like that. You also can't power on the phone without a battery with the charger connected.
Yesterday I received my wizard and I had to revive my battery too because it was completely empty. I used a self made 5V power supply and after 2 minutes charging I placed the battery in the wizard and was able to charge and boot with the charger connected.
Here's the 9v battery trick, connect the + from the 9v battery to the + of the phones battery and the - to the -, hold there for only 10 seconds then remove the connection for 10 seconds and then repeat the process about 8 to 10 times and then put the battery back in the phone and connect it to the wall charger to fully charge.
Thanks for the advice. I'm going to do the jump-start thing.
However, I've hard time determining which is the - and which is the + pin layout on the battery, since the label is not correctly applied.
As far as I can see the - is the one at the far right, however I'm not sure which is the + pin.
Can someone help me with this, please?
Regards,
vivanov said:
Thanks for the advice. I'm going to do the jump-start thing.
However, I've hard time determining which is the - and which is the + pin layout on the battery, since the label is not correctly applied.
As far as I can see the - is the one at the far right, however I'm not sure which is the + pin.
Can someone help me with this, please?
Regards,
Click to expand...
Click to collapse
When you take out the battery and put it back in that direction ,turn and face up the connector side fasing you,the first connector from the rightside of the battery is the ' + ' and the last is ' - ' towards the leftside.Be careful while connecting and try not to touch other connectors. Don't keep the connections longer then 10 seconds interval.
good luck
Xeno1,
My MDA battery also died and went below re-chargeable state. Your trick to use 9volt battery to jump-start it worked just fine for me. I connnected for about 20 seconds (2x times) and plugged it back into phone and connected USB cable to it and my nice yellow charging light came back on. After about 30 mins, I could use the phone.
THANKS FOR THE GREAT TIP!!!
easier fix, take a standard usb cable. rip off the smaller end with a wire cutter, expose the red and black wire. take out your battery, than connect the negative(black) wire to the negative end of the battery, than the red wire to the positive end of the battery, leave it in there for exactly 3-5 minutes for jump start. after that turn your wizard on, and quickly shove it inside a new usb cable. or the wall charger.
note:
if not done correctly, you may damage your wizard or the battery. if theres a power overload or your power goes out. your wizard will burn out!
feedback is greatly appreciated.
p.s after that my battery seem to be weak, charge barely holds for 12 hours. after 12-14 hours it will die out. so i suggest buying a new battery after couple of days.
Thanks guys! Vario died yesterday and wouldn't turn on or charge.
Tried the 9v battery recommended here and it worked! I was a little unsure which end was - and which was + but using the advise above, got it right. Wasn't too worried as found and ordered a replacement from ebay this morning for £7.
The first connector on the right hand side, nearest the end of the battery is the + the one more towards the middle and further away from its corresponding end is -, or at least, thats what worked for me.
Thanks again!
Experiencing the same issues after I set aside my Mini S as it was experiencing problems with regards to its screen alignment. Wasn't able to charge it during that time I kept in the drawer unused - due to frustration as I can't use it anymore. After downloading a guide to disassmble it so I could remedy the problem I found out that it won't power up anymore even with a new battery.
Well, haven't tried the jumpstart thing and the original battery was disposed of already to try the jumpstart idea. Could it be the internal battery is causing the problems? I opened my unit up and tested the internal battery for power and it registers a measly .2V left. Will use the 9V thing to power it up (as been doing that before on watch batteries that are hard to find replacements) before I do it on the main battery. Here's hoping it works as the Mini S has been quite useful for me until now.
UPDATE: I charged the internal battery and it now reads 1+ V and the external battery at 3+ V. No luck yet though as the unit still won't show any life. Any suggestions?
Vivanov, I know it's been a few years now, but did you end up fixing your problem? If so, how?

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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Click to collapse
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.
Click to expand...
Click to collapse
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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Click to collapse
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.

[Q] Nexus 4 bricked? Tried everything.

12.
Not everything my friend
Just charge the battery for some HOURS or over the night. All the described symptoms indicate a low battery to me.
cheers
UPDATE:
Just managed to unlock a bootloader in that short period of time i can get to fastboot. But still no change, phone wont stay in fastboot.
greg17477 said:
Not everything my friend
Just charge the battery for some HOURS or over the night. All the described symptoms indicate a low battery to me.
cheers
Click to expand...
Click to collapse
Well, i actaully tried to leave it plugged over night. But i think it stops charging right after the red light dissapears, which happens after 15mins or so after plugging. Btw, i mentioned earlier that battery shows 3.7V when measured with multimeter, so the battery doesn't seem to be the culprit... or does it...?
12
your battery is drained below safe line....to 0%. They warn you NOT to update it with less than 60% battery FOR A REASON!!
Friends case she managed to charge ger asus 7 memopad with non-removable bat to 60% after 8 HOURS, because of a bloatware wakelock drainage to 0% after a factory reset....
If that doesn't work you have to either recharge the battery manually (something like car batteries, you have to unsolder the battery connector because the battery doesnt have 2 gold squares that touch the gold pins like the removable ones, or get a new battery.
Li-Po batteries should never be discharged to 0%, and can make problems if they are not removable (Nexus 4)
Mashed_Potatoes said:
your battery is drained below safe line....to 0%. They warn you NOT to update it with less than 60% battery FOR A REASON!!
Friends case she managed to charge ger asus 7 memopad with non-removable bat to 60% after 8 HOURS, because of a bloatware wakelock drainage to 0% after a factory reset....
If that doesn't work you have to either recharge the battery manually (something like car batteries, you have to unsolder the battery connector because the battery doesnt have 2 gold squares that touch the gold pins like the removable ones, or get a new battery.
Li-Po batteries should never be discharged to 0%, and can make problems if they are not removable (Nexus 4)
Click to expand...
Click to collapse
I did manage to charge it manually with two small wires and an old Nokia charger, when checking battery with multimeter after a few minutes of charging seems to increase voltage. But i guess if the chip on battery is fried there is nothing more i can do.
I will try to leave the phone on charger all night once again, see if that makes a difference, and update if anything changes.
take off the back, disconnect the battery connector wire and connect it again, put it on charger and see if things change
UPDATE:
Leaving it to charge overnight didn't have any effect. Any other suggestions than changing a battery?
Nah, sorry, but i am out of ideas. You basically tried it all :/
Darkis said:
I know there is a lot of threads about bricked N4's, and i can assure you that I have viewed each and every one of them, but i still can't resolve my broblem.
This whole brick situation happened after trying to update to Android 4.3 OTA update, the phone didn't complete the process and turned off, where red light of death happened.
So the scenario goes like this:
If i hold POWER button for ~30s when phone is off charger i only get a Google logo for 2 sec, and phone instantly restarts
Holding PWR+VOL-DOWN buttons when phone is off charger doesn't do anything
Plugging phone to charge (socket or PC) results in solid red light
Holding PWR+VOL-DOWN or PWR+VOL-DOWN+VOL-UP for ~15s makes the red light blink at a steady rate
While continuing to hold the respective buttons and pluging the charger off, and on again gets me to bootloader or download mode (depending on button combo) for ~2s and phone restarts.
I tried removing and inserting the battery 3 times. One time i got blinking red light when plugged the charger in. Second time i got solid red light and third time got solid red light again
I tried charging the battery directly for 15 minutes with old Nokia charger, and it resulted in something different(when i assembled the phone and tried to turn it on with PWR+VOL-DOWN buttons when charger was plugged off, i got to bootloader for 2seconds before phone restarted, i tried to boot second time and the same thing happened, but when i tried it third time i got nothing, just like before) so this was the first time i got into bootloader while not charging a phone.
*My PC seems to pick up the phone for a brief moment when it is in bootloader and starts installing the drivers. Drivers gets installed when i'm in download mode for that brief moment too.
**Phone doesn't get to the white or red battery icon while plugged to charge.
***Solid red light dissapears after charging for ~10mins, but phone won't do anything.
****When measured with a multimeter battery shows 3.7V
I hope someone will be able to help me with this, as it is frustrating as f*ck. I don't have a working warranty, so fixing the N4 isn't an option, and where i live phone repair prices are over the roof (ex. motherboard change for N4 costs ~270$ ).
Click to expand...
Click to collapse
I had the same problem. Kept it on the charger for a whole day and still only the Red Light.
Took it to a local shop and they said there is a short circuit in the antenna
Took it to the LG Service center and they said my motherboard is gone.
Both were costing a bomb to repair and still there was no guarantee.
IMHO, get a new phone.
Sorry
Have you tried charging it with a wireless charging pad? I got mine to boot after I did that. Your battery is drained and it doesn't have enough juice to charge itself.
12
Don't fall for the motherboard dead trick. Just a way to steal your money.... change the battery and never let it go to 1%
12

Battery is fully charged but os reporting low?

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.

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

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