As probably many of you already know, there is a shutdown bug mostly affecting Nexus 6p but also other devices as well.
I've been using my Nexus 5 for 3 years until a week ago I got the Nexus 6p, and I had not noticed this issue. However, after having the shutdown a couple of times with the Nexus 6p, I decided to test with the Nexus 5, and I'm finding quite easy to reproduce the problem, what make me wonder why I hadn't read such complains about Nexus 5 before.
Just getting to 15% and spam the camera a little (around 7 photos), and it dies (battery drop 15 to 0). Tested with two Nexus 5.
How old are the batteries in the Nexus 5 phones you used for the test?
You aren't replicating the bug. The camera really does suck down battery life like you wouldn't believe. You are most likely genuinely draining the battery 15%. I've been on a Nougat ROM for a couple of months now and haven't had any sudden battery power off or anything of that nature. I can bring it down to 1% everytime before it dies.
Are you doing this on stock ROM or custom ROMs? What Android version?
everything stock, 6.0.1.
your theory would be ok if the battery remained on 0%. But after turn it on again, some times is indeed at 0%, but other times it's at 15%.
Also, according to that logic, if the device is at 100% and I take 10 photos, my battery should drain to 85%, right?...
It's not a theory. Batteries don't always drain at a linear rate. For example, going from 100% to 85% could take 1 hrs. While going from 15% to 0% could take only 20 mins. This will be made worse by an old or dying battery. When a battery is under load, you have what is called "battery sag." Let's say the battery is at 3.7v. When under heavy load, the voltage could drop to 3.5v or lower, aka: battery sag. When the load is removed, the voltage will jump back up, though not as high as it started because while under that load, it also drained some juice from the battery.
You are probably experiencing heavy battery sag while at 15%, enough to drop the battery voltage low enough for the phone to power off. The heavy load is removed (camera is no longer on), and voila, now the battery is no longer "dead." My first Android phone (Tmobile G1) wouldn't even allow the camera to open if the battery was at 15% or lower. Most likely because the heavy load and subsequent battery sag would cause the phone to power off almost immediately.
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I thought maybe it was my battery (anker 1900) so they replaced it, and although my battery life increased, once I get to around 12%, it'll jump to 4 and then die in 5 minutes, many times before the phone can even shut itself off, it just loses power. Almost as if its.misreading the voltage until it gets very very low. I know this was a problem on gingerbread, didn't think it was on ice cream sandwich. Any thoughts? Its really annoying
This anker battery does last longer than my last anker, I got over 4 hours of screen use with wifi over 9 or 10 hours. But the jumping to 4% must be software since it happened on both batteries. Haven't tried using my stock battery yet. Anyone else experience this?
Have you tried one of the recalibration methods on xda? Or you can use battery monitor widget pro to enter upper and lower limits for your current setup.
from HTC Pyramid / Tapatalk 2
Well, in the lower levels of the battery, ie below 20% the % reading is quite unreliable. This is normal, because voltage fluctuations will cause wrong battery readings.
To show you an example, after your battery dies out, leave it for a few minutes & then try to switch on your phone. You will still be able to, because the battery hasn't completely drained.
You should calibrate your battery & see if that helps too
Recently changed my battery for no real reason but the fact that I had another fully charged and couldn't be bothered plugging phone in.
So off for the rest of the day I went, noticed instantly that battery was lasting longer. At 60 percent I had exactly 2 hours screen on and by the end I had gotten well over 4 hours. My old battery used to get that but after update to 4.3 I was getting less (approximately 3 hours). Getting less battery time after the update was normal to me as not many people know that from 4.2.2 to 4.3 samsung removed the brightness reduction profile used in specific apps like chrome/browser to conserve battery (80% of full brightness setting). This was done to get battery life points at release date.
On top of that I noticed the phone was cooler and more faster, this however was not major just a more stable sense of feel.
Now the point of this post is to find out why, now I know there are issues with batches of battery's but unsure of its implication.
Another possible theory is faulty battery causing higher heat output and power loss which could also have at times caused throttling of phones performance to prevent damage (which we all know it does, quick example is using phone heavily while charging)
What you people think
Battery Very HOT!
I am pissed at Samsung. My phone nearly burned a hole in my pocket and lost its juice inless then 30 minutes when it approached 30% battery. I went to the battey tab and took a screenshot of its discharging curve! No surprise! The battery was hot and lost nearly all of its power in less than 15 minutes. I have yet to take it to Samsung to get a new battery before it catches fire!
Any recommendation on how to prevent that from happenening?
Michael Ceitlin
SG4-I9505 4.3
MCEITLIN said:
I am pissed at Samsung. My phone nearly burned a hole in my pocket and lost its juice inless then 30 minutes when it approached 30% battery. I went to the battey tab and took a screenshot of its discharging curve! No surprise! The battery was hot and lost nearly all of its power in less than 15 minutes. I have yet to take it to Samsung to get a new battery before it catches fire!
Any recommendation on how to prevent that from happenening?
Michael Ceitlin
SG4-I9505 4.3
Click to expand...
Click to collapse
Buy a other battery, you can get one cheap on ebay (Don't buy one that is really cheap, they are mostly ****ed up) :highfive:
MCEITLIN said:
I am pissed at Samsung. My phone nearly burned a hole in my pocket and lost its juice inless then 30 minutes when it approached 30% battery. I went to the battey tab and took a screenshot of its discharging curve! No surprise! The battery was hot and lost nearly all of its power in less than 15 minutes. I have yet to take it to Samsung to get a new battery before it catches fire!
Any recommendation on how to prevent that from happenening?
Michael Ceitlin
SG4-I9505 4.3
Click to expand...
Click to collapse
That isn't the battery's fault; there is something on the phone that is using up 100% CPU (explaining the heat and rapid battery drain).
yuuuuuuuu said:
That isn't the battery's fault; there is something on the phone that is using up 100% CPU (explaining the heat and rapid battery drain).
Click to expand...
Click to collapse
Agreed. Although, the battery could be the start. My phone gets extremely hot. I check the CPU usage and it's being occupied no matter how many times I clear the RAM.
If I'd be you, I would start from the battery callback... I would look if my battery is not swollen, if its serial is starting with BD...
but, it is me. I have a strange behaviour to start from looking if similar problem occurred for someone here in the past...
Hello, this is how my battery life looks like.
So, battery, when it charges, goes up smoothly up to about 50 percentage mark. Then, the rate of charge slows dramatically, followed by a huge surge at the end. As soon as I unplugged my phone, however, the battery drops significantly, and I end up losing battery even as the battery is charged.
Any idea what has happened? I see no significant wake lock (I have no idea what the application says it's active), signal is high and sync is turned off. Is it a hardware issue? Corrupted battery stat?
I am running CM 11 Milstone 12, and the battery is a ZeroLemon extended battery.
uion1715 said:
Hello, this is how my battery life looks like.
So, battery, when it charges, goes up smoothly up to about 50 percentage mark. Then, the rate of charge slows dramatically, followed by a huge surge at the end. As soon as I unplugged my phone, however, the battery drops significantly, and I end up losing battery even as the battery is charged.
Any idea what has happened? I see no significant wake lock (I have no idea what the application says it's active), signal is high and sync is turned off. Is it a hardware issue? Corrupted battery stat?
I am running CM 11 Milstone 12, and the battery is a ZeroLemon extended battery.
Click to expand...
Click to collapse
Sounds like the battery or possibly the charging port is going bad. Those are really the only two I can think of
Sent from my Nexus 5
Can anyone suggest what is happening here please with Mate9?
My phone has a new battery for last 6 months after original battery started swelling and expanding the phone case. New battery works like original except very occasionally, maybe once a month, the battery runs down faster than normal. It might normally last 36 hours whereas once in a while it would run down in 12 hours - last time the usage attributed high power consumption by Huawei Health app, but I don't know if this was culprit before. HOWEVER, when I plug in charger the phone doesn't charge but continues to run down. If I turn it off it doesn't charge but continues to run down. Then if I wait a few hours with it turned off it then acts normally and recharges 100% in 90 minutes in the turned off state for a full 36hrs++ usage when powered on again.
So what is wrong? Just and old phone needs replacing?
Hi everyone,
I have a Leagoo T5c with a more-or-less 3,000 mAh non-removable battery, and for the past few month, battery life has been somewhat erratic. The phone would go from, say, 50% to 10% battery in no time, and I would get the low battery warning, but at other times it could hold at around 45% for a while before really going down for good.
Last night around 8pm my time, the phone went completely dead while the battery indicator in the task bar said I still had about 65% left.
I tried what's described here and there as battery calibration: I left the phone turned off, patiently waited a couple hours (yes, yes, that long) for the battery to reach 100%, then left the phone off for another hour before turning it on.
In a matter of minutes doing nothing more than checking my Twitter TL, the battery went from 100% to around 85%, and was still there went I tucked in for the night, leaving the phone in Airplane mode as I always do at night.
This morning, I turned Airplane mode off and the battery said it still had 82%, which means minimal drain during the night, with all radio off.
Just a few minutes ago, the phone went completely dead after the low battery warning, and the battery held less than 10% charge.
WiFi is off, cellular reception is very good where I live, and anyway, I don't see how LTE could kill 70% of the battery charge in less than half an hour, even if reception was spotty, which it's not.
I plugged the phone into the charger it came with, put it in Airplane mode again, and it went from 10% to 70% just now in less than 30 minutes.
I know for a fact that fast charge isn't supported on this phone, at least not with the OEM charger, plus it has micro-USB, so I doubt the charger can feed it that much juice in so little time.
The charger itself seems to work fine: It never gets hot while charging, not the Leagoo, nor my old iPhone 6, since I use it for both devices.
So, long story short, is there a way or tool to ***really*** know what state that battery is in? I've tried both DevCheck and CPU-Z, and both say that the battery is in good health, and still retains its nominal capacity of more or less 3,000 mAh, but I have my doubts about that.
I think the battery capacity is reduced somewhat, and I need to know by how much.
Any help and input would be much appreciated!
I must add that I flashed a stock ROM on this phone (yeah, again...) a few days ago, so maybe it's the ART cache being replenished that's causing my battery issues, but still, the problem is so inconsistant that I don't know anything anymore...
I had to flash the stock ROM again after trying (again...) to root the device (successful, but doesn't bring anything of value) and finding it barely responsive.
I'm gonna leave the phone as is, ROM-wise, but my battery is still a matter of concern, because it dies on me at the 60-65% mark more often than not, though two days ago I let it drop to 30% without the phone shutting down.
Like I said, it comes and goes. I really need to know if that battery still retains its nominal capacity or not. Any help in that regard would be most welcome...