[Q] Weird battery indicator behavior while charging? - Nexus 4 Q&A, Help & Troubleshooting

I've notice a pretty weird behavior of the battery indicator (precents) while the device on charge, few checks - not permanent, though not serious but intriguing.
I'm using the original charger (1.2A UK with EU adapter) with original usb, Stock 4.2.2 no root or anything else. (The device is 1month old, bought from Play UK)
Also I only could check this with GSam Battery Monitor because its have a history chart so I could check the battery percentage at any given time.
On the app there is 'Chart' menu in this menu there is also option to view 'Power vs Precent Chart' what gives you a deep look into the charging/discharging details (Hour/Voltage/Precents/...).
In several cycles of discharging/charging I've notice a strange behavior of the battery indicator (the precentage) while the device on charge, for example - when the indicator went to 82 it goes up to 83 then goes down to 82, then 83 again, 84, 83, 84, 85, ....93, 100.
In other case - while it was on 81 its up to 82 down to 81 up to 82 and continue regular....
I've found that GSam not showing 29% and 58% so no worry about jumps on these precentages.
Another one: 91, 90, 91, 90, 91, 92, 91, 92, and continue regular.... heres a picture for this session:
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Marked in red.
I can confirm that the device's screen was off, no activity or any heat (the battery temperature was cold - also another thing you could check with GSam) at the moment of the 'jumping precentage'.
I want to say that I have no problem with the battery, its working great, just bother about this jumpings...I thought its only on GSam app but when I looked at the stock battery chart I could see these jumps also while it charging...
Pretty weird, if you don't have a app that analyze the battery status you'll never notice it....
There is anyone whos using GSam and can check if he also has this behavior (its on Chart->Power vs Precent Chart) especially happens on charging (not permanent, can be at any percentage)?
Also anyone have any idea why is it happens?
How do I know what is a good/bad voltage while charging/discharging, any idea how to identify thing like that?

!
UPDATE:
First I've tried this charger on 2 Galaxy S2 devices, charged them and confirm that there is no jumping or other weird stuff...seems its something with the charger and the battery.
So I tried my S2's charger (700mA) and done 2 cycles of discharging/charging with it, no jumping or other strange stuff...seems fine.
I guess its something with the OEM charger (which is 1.2A) and the/this kind of battery, maybe its not a bad thing after all... (someone said something about 'pulse charging', donno if its the idea on this behavior).
Anyway - if someone use GSam and would like to share if he experience this kind of things as I've described with OEM/non-OEM charger, it will be great.

-
Well after more then month another UPDATE:
Seems it dosn't matter which charger I'm using, at some point/points on charging the precentage will jump/drop randomally it could be only once per charge and could be more then 5 at once charge...
I still have no idea why is it happens, with other devices I never notice this kind of thing.
Again, if anybody could please check it with his own device if you notice this behavior (let the device charge full/almost full and check the graph/chart:
at stock battery you'll notice drop/jumps
with GSAM its easier- you can go to 'Power vs Precent Chart' and notice it as the screenshot that I've attached at 1st post, or zoom in the chart and see if you notice any drop/jumping of the 'linear' line)
Thanks in advence...

Related

Horrible battery

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Take a look I am running SC 2.4 and I had my data on and I went to 79 percent battery in a little over an hour mostly on standby just now I charged my phone to 100 percent and its at 90 while leaving wifi on and a phone call
Sent from my SCH-I500 using XDA App
EB01 has a bug in its sensor code, so turning off AutoRotate will help. It's still not a WHOLE lot better, but it's at least serviceable that way.
Hopefully, the rumors about the update/OTA were true, and we'll see an updated build (EB09 is sticking in my brain for some weird reason, but don't take that as anything real) that fixes the sensor code and anything else that's eating up battery.
Did you do all the flashing when at 100% battery? It's possibly your battery stats are just inaccurate.
Let the phone charge to 100%, then with the phone still plugged in, shut it down so you get JUST the charging screen, and let that go to 100%. Then, boot into CWM and delete battery stats, and then go back to the powered-off-charging-screen and let it go back to 100%, then boot back into your OS. Some people recommend draining the battery most all the way, then charging it back up, but I'm not sure if that's really necessary.
Also, apparently there's a GPS bug in EB01 which causes it not to sleep, which'll drain your battery fast as well (though I don't see the GPS icon on your screen). You might also have some battery hog in the background slaughtereing battey life (the battery use screen might be able to lend some help for that).
Try using an app called juice defender, I found it to help my battery a lot.
SC 2.4 hides the icon.
I was getting a wakelock from Android System earlier today, but that has finally resolved itself and my phone is sleeping now.
I am not a noon so I know about wiping batt stats and did that I have used juice defender before but I just don't see a whole reason that it should drain that quick
Sent from my SCH-I500 using XDA App
No issues with battery life AT ALL with EB01. In fact, the BEST battery life I've EVER gotten, even better than Adrynalyne's UV kernels (no offense bud)
Yesterday, I unplugged around 10, got off work work at 830, was home by about 930, and STILL had some 34% left, 11 hours later. I'VE NEVER been able to go that long on a single charge. And I leave auto-rotate on.
What REALLY helped me, was turning off the GPS when not in use. MAN....what a difference !!!!

[Q] Battery stuck on ?

My nook, even after charging completely, dissconnecting the power cord, and using it for hours after, always shows a ? for battery status. Under settings battery % always reads unknown.
Anyone experienced this problem? My nook is rooted (rotted?).
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Although I haven't read about the BatteryManager ever returning unknown,
I'd be interested to know what the battery/charging status says in UsbMode.
This app has a group that displays all the broadcasted info on the battery.
http://forum.xda-developers.com/showthread.php?p=25613941#post25613941
Solved
So, I let the thing sit for weeks. Too busy with school to send it back to b&n for a reaplcement. I finally decided to deal with it, I plugged it in and in a few minutes it said battery to low to charge. I had to wait 15 minutes. So i let it charge till full. Upon booting, and unplugging, battery registered 100 percent and decresed with normal use.
In other words, let it totally run out of battery (could take weeks) then plug it in and let it fully charge.
Worked for me
I would like to confirm the OP's results. My battery started doing the question mark thing out-of-the-blue, about a month ago. I tried unrooting, restoring to factory settings, I even tried older versions of the Nook software to see if that made any difference, and nothing. I tried to drain the battery, transferring files to and from the Nook over wifi, and even when I couldn't boot from low battery, as soon as I plugged it in I got question mark battery. Being in Canada, getting my Nook replaced is a huge pain, so I left it for about a month. Pulled it out today, just for the heck of it, and I got the Not enough battery to turn on screen (which was new, when the battery was in question mark mode it would always attempt to turn on, but fail silently as soon as power was removed). I left it plugged in for a few minutes, and lo and behold it booted up and displayed the charging animation on the battery icon. I charged it to full, and it seems to be as good as new.
So, for anybody else that has this issue, the fix seems to be to let it drain for a very long time, then recharge. Shortcuts don't work, and it isn't a hardware issue that needs replacement.

Phone turning off at 50% battery life

For the last week or so, I've noticed that my phone now powers off at 50% battery life.
Battery Monitor Widget reports the battery still having ~1000mah at this level, but the phone just dies. I feel like this is incorrect, because sometimes if I run it down slow near 50%, it will do that thing where it will flash RED on the LED when you plug it in for the first time (super low battery indicator).
I'm running AOKP 4.2.2 MR-4, but i've tried a few different roms, dirty and full wipe (factory clean), along with various kernels, but my phone continues to die at 50%.
Any ideas on how to fix this?
See attached screen shot for what I"m talking about. Battery drain will look fine, then all of a sudden, BOOM 0 percent, and I have to charge it.
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Yikes, definitely something going on there. Are you running a custom Rom?
Sent from my Nexus 4 using Tapatalk 2
thatguy188 said:
Yikes, definitely something going on there. Are you running a custom Rom?
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
Just went completely back to stock and then put the latest AOKP back on. Still seeing some weirdness. It's like it doesn't even use half the capacity of the battery (see discharge/charge graph)
h41cyon said:
Just went completely back to stock and then put the latest AOKP back on. Still seeing some weirdness. It's like it doesn't even use half the capacity of the battery (see discharge/charge graph)
Click to expand...
Click to collapse
If I had to guess, I would say you battery stats file is out of sync. After flashing different ROM's on a G1, I would have to re-calibrate the battery stats by letting the phone battery slowly die (phone powers off), then fully charge while phone was still off (8-12 hours), turn back on and repeat one more time. The stats file would fix itself.
I'm experiencing the same issue, but mine is not as severe. I've dropped as much as 25% battery, but the phone has never reached auto shut down. I'm worried that this issue will cause the red light of death.
SpookyTunes said:
If I had to guess, I would say you battery stats file is out of sync. After flashing different ROM's on a G1, I would have to re-calibrate the battery stats by letting the phone battery slowly die (phone powers off), then fully charge while phone was still off (8-12 hours), turn back on and repeat one more time. The stats file would fix itself.
Click to expand...
Click to collapse
yea def sounds like battery stats not updating properly

[Q] Battery Calculation Broken?

This has happened multiple times on my Galaxy s4. Today was the worst however. My phone was on 51% battery (supposedly) and then, the phone just turns off while I was in an app, without any kind of low battery warning, it was running as normal before this happened, I start the phone up again and bam, 1% battery remaining. Here it is on the battery screen:
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My battery was dead by 2pm in the day which is also significantly worse than normal. This is with just 45 minutes screen on time:
and just 7 hours on battery:
And with no apps sucking up battery life.
Has anyone had this issue before and is there any possible way to fix this?
Charge to 100%. Pull battery. Put it back in and charge it again while off to 100%. If that doesnt fix it then get a new battery.
epicflyingcat said:
This has happened multiple times on my Galaxy s4. Today was the worst however. My phone was on 51% battery (supposedly) and then, the phone just turns off while I was in an app, without any kind of low battery warning, it was running as normal before this happened, I start the phone up again and bam, 1% battery remaining. Here it is on the battery screen:
View attachment 2850747
My battery was dead by 2pm in the day which is also significantly worse than normal. This is with just 45 minutes screen on time:
View attachment 2850751
and just 7 hours on battery:
View attachment 2850748
And with no apps sucking up battery life.
View attachment 2850750
Has anyone had this issue before and is there any possible way to fix this?
Click to expand...
Click to collapse
Hi ,
It could be lots of things...battery , phone not going in deep sleep , settings
First thing I would do is use an app like Better Battery Stats and really see what is going on ( kernel wakelocks) , who is keeping the phone up all the time , then i would review all my settings like FB , mail , location ...any syncing related app that may be going crazy and of course battery may be going bad
Look like a bad/faulty battery for me.
Sent from my GT-I9500
Keep in mind that battery percentage is never 100% accurate. All devices with batteries (with a percentage meter) has this.
But yeah, use better battery stats to check wakelocks.
Also a trick to calibrate the fuel gauche chip is to take out the battery for 3-5 minutes. It will be more calibrated than before.

Incorrect Battery Reporting | % Skipping | Dead @ 12%

Battery would fall 2% on the screen, it shows in battery reporting you can see the line drops steeply within 1 minute then stays stable (ignore the part where my device was asleep).
been very inaccurate with reporting % it randomly died at 12% (lowest its been since i got it 3 weeks ago) and when i power back on its at 2%. i charged back up to 40% and let it drop to 12% and the same happened.
i could live with the 3hr SOT if i got a good report of how much % was left so i can conserve usage if need be.
Running stock oxygen 2.1.1
then rooted and installed AK kernel (SOT is a little better) but still % dropping. i even super underclocked and saw the same effect
sent a ticket to OP - hoping its a defect and they can replace it
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LOGMD said:
Battery would fall 2% on the screen, it shows in battery reporting you can see the line drops steeply within 1 minute then stays stable (ignore the part where my device was asleep).
been very inaccurate with reporting % it randomly died at 12% (lowest its been since i got it 3 weeks ago) and when i power back on its at 2%. i charged back up to 40% and let it drop to 12% and the same happened.
i could live with the 3hr SOT if i got a good report of how much % was left so i can conserve usage if need be.
Running stock oxygen 2.1.1
then rooted and installed AK kernel (SOT is a little better) but still % dropping. i even super underclocked and saw the same effect
sent a ticket to OP - hoping its a defect and they can replace it
Click to expand...
Click to collapse
By what I read, it's a normal behavior when device wakes up from sleep.
It seems that, when device is asleep, even battery stats aren't updated, to avoid unnecessary drain. So, once it wakes up and you use it for couple minutes, android get a chance to record stats and update actual battery percentage.
Again, this is the explanation I read on such a question, and it does makes sense.
Hetalk said:
By what I read, it's a normal behavior when device wakes up from sleep.
It seems that, when device is asleep, even battery stats aren't updated, to avoid unnecessary drain. So, once it wakes up and you use it for couple minutes, android get a chance to record stats and update actual battery percentage.
Again, this is the explanation I read on such a question, and it does makes sense.
Click to expand...
Click to collapse
i managed to underclock enough to make the other percentages to show up - so it is working just i guess polling is slow.
the 12% dead battery isnt normal though. havnt had it since then but if reset a few times. now switched to a custom rom (keep loosing LTE) but ill figure it out, thanks!

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