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Hey all, so I have a different theory on the GNex battery issue but I'm not sure how to test it. It also might explain why there has been such a discrepancy in people's battery stats.
My theory is that there is something wrong with the way ICS/GNex is charging/reading/identifying battery information. Here are a few of the reasons why I think this is the case.
1 - My phone will occasionally charge absurdly fast, like 20 percent in 10 minutes... but then it will die equally as quick. My first thought was that the phone just charges and discharges quickly... BUT
2 - After charging for, say an hour, when I do a battery pull and let it sit for a minute or two before putting it back all of a sudden my super quick battery charge to 62% is now only at 37% (actual numbers that happened to me tonight). So why did I do a battery pull...?
3 - Because I noticed that after 10 minutes my phone had gone from 62% to 56% and I thought that was absurd. Once I did the pull and was back to my (as I like to call it) normalized battery percentage I have only dropped 15% in 2 hours and that includes heavy data usage on maps, navigation and texting. And another strange thing
4 - I have actually seen it go the other way! I once was around 30%, rebooted the phone and it jumped to 50%. Now that I'm thinking about it I often see weird fluctuations in my battery reading. One minute it will be 28%, then I turn it off and turn it back on and it will be 29%. Oh... and for those of you wondering
5 - This has happened both on a stock rom, rooted stock (although not like that would make a diff) and a custom rom ARHD. But still there is one last question...
6 - Why is there so much disparity on the issue? My theory is because this battery madness is so unpredictable you, you don't know when you get a normalized charge or an inflated charge. And lastly...
7 - I think it's gotta be a SW issue, why else would Nexus S owners be seeing the issue as well? (So that's good news... hopefully).
Soooo, that's my little rant. I think part of the problem is people are getting distracted by all these other theories with kernel drivers and etc because of the absurdly high Android OS issue (although in all fairness my theory could be more misdirection).
So why post? Well if people could try their luck validating/disproving my theory I would really appreciate it!
Here's what I'd like (and what I am going to do).
Charge your battery for an hour, if it charges really fast note the percentage.
Optional: Play with the phone for a while and see if it discharges quickly.
Do a battery pull, let it sit for a sec and put it back in and note the percentage.
If the percentage is significantly lower (10+%) start using the phone now and note the time to discharge.
Thanks!
EDIT: Also a good thing to mention, I am not disagreeing about the Android OS bug - I think that's also very real and something I have experienced as well. BUT if you look at the other battery thread you'll see a lot of people posting battery success images with high Android OS utilization. I think it could be an indication of multiple issues contributing to a negative experience.
Oh and I submitted a bug report to Google.
http://code.google.com/p/android/issues/detail?id=23311
I've also noticed crazy battery drop after reboots or pulling battery. Easily drops 10%+ at times. Reminds me of my great blackberries back in the day
Sent from my Galaxy Nexus using xda premium
all good here. i'm very pleased with the battery life.
while there may be issues with the stats, the wake times are real for some users - as well as the heat generated (indicating the cpu is working) when the phone should be sleeping.
There is no question there are either bugs in ICS that cause wake locks to get stuck, or badly written apps that keep it awake that didn't keep awake froyo/gingerbread.
Agreed on the wake lock. In fact I really should have quantified that in my original post - I too have that ridiculous Android OS utilization.
I updated my post - you make a good point.
Charged to about 21%. Pulled battery and rebooted and reported about 31%. Running ARHD.
EDIT: Pulled battery again and rebooted and reports 20%.
I realized mine was charging extremely slow so I decided to turn it off and let it charge faster. It was only at 48% when I turned it off but as soon as the battery indicator showed up with the phone off it appeared to be well over halfway charged, I would've guessed close to 75% but I didn't think to turn it back on and see..
edit: I did charge it fully with the phone off then wiped battery stats in cwm before rebooting into the OS after this. Since then it seems to be charging normally and reporting the correct battery level
To prove this theory, I think you should check the reported voltage of the battery and compare that to the percentage meter. Most battery apps/widgets use the old Android "battery info" screen to report this data. There very well may be a problem with the GN/ICS meter, but to be sure there has to be some constant to go back to.
These batteries drop like a rock from full charge to something like 87-88%, and again from around 37-38% to zero. It's just the battery technology, perhaps exacerbated by not having enough battery stats to adjust the % meter.
As far as I know, an app/widget that reports battery voltage will do so from the information being provided by the battery circuitry itself, so it's not subjective or adjusted in any way like a meter will be, making it a far better correlation point for the discussion.
djp952 said:
To prove this theory, I think you should check the reported voltage of the battery and compare that to the percentage meter. Most battery apps/widgets use the old Android "battery info" screen to report this data. There very well may be a problem with the GN/ICS meter, but to be sure there has to be some constant to go back to.
These batteries drop like a rock from full charge to something like 87-88%, and again from around 37-38% to zero. It's just the battery technology, perhaps exacerbated by not having enough battery stats to adjust the % meter.
As far as I know, an app/widget that reports battery voltage will do so from the information being provided by the battery circuitry itself, so it's not subjective or adjusted in any way like a meter will be, making it a far better correlation point for the discussion.
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I use current widget to tell me my voltage, as I don't pay attention to the meter. On a stock LTE battery, you should cap out at 4.203V
Voltage meter sounds like a reasonable way to approach the problem. I'm definitely not an expert on battery stats though - what should the voltages read? I know it caps at 4200mv, but what is the min?
Also how does mv relate to mah?
m0sim said:
Voltage meter sounds like a reasonable way to approach the problem. I'm definitely not an expert on battery stats though - what should the voltages read? I know it caps at 4200mv, but what is the min?
Also how does mv relate to mah?
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mv stands for millivolt which is a measurement of voltage. Examples you may have heard before are 9v battery, 110 volt wall outlet.
1mv = 1/1000 volt OR 1v = 1000mv, so you can see a mv is very small compared to a volt.
mAh stands for milliampere-hour and, in layman's terms, is a measurement of battery capacity, specifically how many hours a battery will last if the device it is connected to pulls a known amperage.
So, if a device pulls 500mA and the battery is rated 2000mAh, then generally the battery will last 4 hours (2000mAh/500mA). There are numerous other factors in the equation such as temperature, age of battery, etc. that can affect the battery life.
Has anyone experienced this. I used my phone heavily for about 1.5 hours at which point it said that I had about 50% battery left. i then left it untouched and unplugged for about 8 hours overnight and when i picked it up int he morning it was at around 50% still and the battery details showed this. seems like after i stopped using it, the battery started charging rather than discharging until I picked it up again.
I'm on stock with an extended battery.
I'm not complaining, just trying to see whats going on.
I've seen this happen as well when going from heavy use to no use over night or when put in airplane mode.
should ask in the Q and A forum....not development....
not only is it the wrong forum...but you will get more answer
The reason for this is due to how the phone displays battery usage statistics. You phone will periodically check the phone usage and determine battery life based on your current usage amount. So if you talk on your phone for an hour straight, during the time your phone will figure how much battery you have left based on that usage. If you then don't use it for 8 hours, your battery level indicated by the phone can actually go up, or stay the same for a very long period of time. Thats why your battery will drop very fast when you start to use it when it has not been used for a while.
It looks like the SOC (state of charge) algorithm is using the derivative of current (consumption over time) in conjunction with the open circuit voltage, yet taking little regard to cell temperature.
As current consumption is decreased, the cell temperature will eventually decrease and the open circuit voltage will slightly increase. This is where the SOC difference comes from.
This is a common problem with any SOC algorithm that doesn't precisely factor in the cell temperature. With these lithium cells being as small as they are (compared to what's used in Automotive applications) trying to characterize the cell temperature characteristics would be like nailing jello to the wall.
akilestar said:
The reason for this is due to how the phone displays battery usage statistics. You phone will periodically check the phone usage and determine battery life based on your current usage amount.
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My thoughts are right along these lines. The phone is projecting your remaining battery life based on previous usage. It is forcasting what your usage will be and with no usage over a certain time period it is reporting negative numbers which send your patterns in a different direction.
Definitely feels temp related. I used mine heavily in a real bad signal area (Restaurant with a tin ceiling...) and it got really hot. I noticed battery life down to 48%. Put it near a fan to cool off and 5 minutes later it was at 65%.
Not positive on specifics, but it has to do with voltage fluctuating.
I have been noticing something strange. I have gotten in the habit of draining my battery down to single digits before charging in an attempt to keep my battery life up. I usually use netflix on 4g to do this as it does a pretty good job of sucking the juice down quickly.
A few times I have noticed that after I shutdown netflix and let the phone sit a little while that the percentage actually goes back up. For example, I kill netflix at 4% battery left. I set the phone down for a bit and when I pick it back up the battery is at 10%. I have seen this multiple times.
Just curious if anyone else has noticed this and anyone has an explanation for why this happens.
I believe it has to do with the battery meter displaying how much battery you have left based on what you are doing? So when you stopped being resource intensive it adjusted itself.
That's one explanation I have heard.. there is also one that has to do with the amount of current going to the battery.
Sent from my Galaxy Nexus using xda premium
trevoryour said:
I have been noticing something strange. I have gotten in the habit of draining my battery down to single digits before charging in an attempt to keep my battery life up.
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I can't answer your question directly as there could be multiple reasons. (Battery capacity estimation is tricky business, and I don't know what algorithm they're using.)
But I can tell you that the common belief that one ought to discharge batteries before recharging them is not applicable to modern lithium batteries.
I was (to some extent) true for old-fashioned NiCd cells, but modern Li-ion cells shouldn't be excessively discharged. If you want to prolong battery life it's more important to keep the battery cool. (Lithium cells degrade much faster at elevated temperatures.)
(To contradict myself I have to add that the battery capacity calculation can be improved by discharging the battery completely from time to time - but again, this depends on the battery capacity calculation algorithm they're using.)
I understand the way current battery tech works. The discharge is not for the battery itself. Its for the Android OS. I have noticed that whenever I plug my phone in in the middle of the day, the next day my battery doesn't last as long. In fact the poor battery life will remain an issue for about a week until it levels itself back out. I have noticed this behavior on multiple phones by multiple manufacturers.
You end up going in a circle. You use heavy data one day and as a result you have to plug in in the middle of the day. The next day your battery doesn't last as long so you plug in again. Unless you allow your phone enough time to level back out then it will always appear that your battery life is aweful. Since i've been discharging my battery I am able to unplug my phone at 7:30 am, use it moderately all day with GPS, Bluetooth, 4G on/wifi off with a live wallpaper running. At 11:30pm when its time for bed I still have around 60-70% battery remaining. I find myself having to watch a few hours of netflix on 4g in order to drain the battery so I can plug it in.
I'm not sure if this behavior is a result of an issue with the battery stats file or what but I do know that when I flash a new ROM it appears my battery life is reset to how it was before I had shortened it by plugging in the middle of the day.
many of us have seen the percent rise slightly, its normal. when under heavy load watching videos or something and then you are finished, the voltage gets relaxed and pops up some. since this phone uses some type of voltage calculation to determine percent, it will jump up once in a rare while, typically right after you placed it under heavy load then went to idle.
it's normal..
I've never seen anything like this. My battery literally dropped 6 percent in a split second while I was looking at the %. Is this a manufacturer defect, would a factory reset do anything to help? Please Help.
WackyClash said:
I've never seen anything like this. My battery literally dropped 6 percent in a split second while I was looking at the %. Is this a manufacturer defect, would a factory reset do anything to help? Please Help.
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No, not necessarily. It takes time for a system to properly calibrate the battery. You should always give it a few full charge cycles before assuming you have a problem.
phonic said:
No, not necessarily. It takes time for a system to properly calibrate the battery. You should always give it a few full charge cycles before assuming you have a problem.
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This.
I wouldn't worry about it it likely hasn't calibrated yet, I've seen many of my devices do this, especially new or freshly wiped
Sent from my SGH-I747 using Tapatalk 2
You are overreacting. Large amount of power consumption in short time isn't unheard of. For example, it has been reported that phone searching for connections and syncing everything at once can cause large drops in battery meter. And battery meter isn't always accurate anyway.
If the battery drops more drastically and happens more than a couple of times, then I would worry.
My tablet does the same too it either goes from 78 to 76 or just skips from 30 to 26 randomly
The first day I got it, the battery went from ~50 to ~60. You read that right...it went up without charging. Just let the battery settle and it will become perfectly normal again.
Mine does the same, drop from 33% to 23% instantly. and while charging, it jumps from 94% to 100% too. But i do get 9:30 hrs use time with Chrome.
Still in the return period window, not sure to return it or not.
I think that the battery percentage sometimes freezes and doesnt update right. So once the software finally gets a good reading or update it will suddenly change alot. I had it stay at 85% for like 3 hours and was thinging, AWESOME this is amazing, then 15 minutes later it was at 50% and i was like, oh, damn it was just playing mind games with me.
The battery gauge doesn't really 'know' the charge state of the battery, it's just guessing more or less accurately based on a model of the battery.
It takes things like battery voltage, load, temperature, voltage change with varying load (to estimate internal resistance of the battery) to basically make an 'educated' guess of the charge state. There can be pretty big corrections of that guess - a 10% jump is very normal. It doesn't mean the battery charge state has changed, it just means the battery gauge has corrected it's estimate.
during charging, i seen that it increased 1% per every 4~6 mins from 1% to 94%, then it jumped to 100% from 94% in the next 6 mins.
It also skipped percentage 4~6 times while charging from 1% to 94%, 1% per skip.
I used Batterybot pro to monitor the battery, it will logs when the percentage has changed, that's how i know it was doing this.
Ever since the March update, my Pixel 3 XL's battery indicator in the status bar has been horrendously inaccurate. This is really annoying, as it always shows as having 10-12% less battery than the actual physical battery charge. If it ever reaches 0% and shuts down, if I were to, say, boot into TWRP, I'd see I still have about 11% battery remaining. Across all the phones I've owned over the years, I've never seen such a severe battery level mismatch before. I've never seen greater than a 2% difference in any phone I've owned.
I use the Advanced Charging Controller Magisk module to regulate how much my battery charges. Charging your phone too much is proven to damage your battery over time, so I like to set ACC up so that my phone never charges past 41%.
I first noticed this problem when my battery would stop charging past 31%. After digging deeper, I found that the battery level produced by "dumpsys battery" (used by the status bar indicator) does not match the actual battery level, which can be read from a kernel control file at "/sys/class/power_supply/capacity."
As a side note, is your battery indicator also incorrect? Try checking it running these commands as root, and compare the values. Maybe this affects you too:
cat /sys/class/power_supply/battery/capacity
dumpsys battery
(The number you're looking for in the "dumpsys" command is the number next to "level." If it doesn't match, and it's less than what's written to the capacity file, then you also suffer from this issue).
I've asked the ACC developer what can be done about this, and apparently not much, besides having ACC "pretend" the battery is offset by a user specified battery level. But in my case, I would just be charging my actual battery to 51%, even though it would display as 41%, and I don't want to do that. I tried fixing it by clearing my battery stats, charging to 100%, and etc, and it actually made matters worse for me - the status bar indicator now remains at 12% less than the actual battery level. No matter what, this value appears to be linear - it doesn't seem to be any more or less correct depending on how charged the battery is. It's always 12% less, unless you get beyond 88%. Then the statusbar pretends to charge, even though a voltage monitor will show that it is not charging.
I can "force" the statusbar to read as the most accurate battery level by running this command in the background in a root shell:
while sleep 15; do dumpsys battery set level $(cat /sys/class/power_supply/battery/capacity); done
This manually sets the battery level via dumpsys according to what the actual battery level is. But this has some limitations.
I'm using a while loop because setting a value like this is permanent - if I don't either continually set it or unset it, my phone will think my battery level hasn't dropped below the last set value.
However, more importantly, setting a value via dumpsys disables monitoring of other battery stats, such as voltage, temperature, current, whether or not the battery is charging, the charge counter, and etc. Just running a script like that isn't a good solution.
So since I have nowhere else to ask, is there any kind of root mod or something that can be made to force the phone to use the correct battery level? I don't know why this started happening since the March update, but it is extremely annoying, and I'd like to put an end to it as soon as possible.
Any insights to mods or tweaks that can be done to fix this would be greatly appreciated.
so im at 5%, but in /sys/class/power_supply/capacity it says 0 .... not sure what's real anymore
I'm gonna charge up to 100% and see for myself what "full capacity" is like
and now i'm at 91% in status bar but 93% in that capacity file lol
If I remember correctly Lithium batteries actually last longer if kept above the 60% range and taken off the charger when they're completely full or maybe a few percent before. It's the lower end of the battery percentage that actually damages the battery if it's kept there for too long. The lower the voltage the higher the resistance in the battery, this is going to cause heat in the battery, so the way you're charging your battery is most likely damaging. I might be wrong but battery tech has changed over the years, and some old misconceptions still exist.
My guess about the amount of difference in the battery display vs percentage is to protect people from this reason. To keep them off of the lower end of the battery because it's damaging to the battery and under the wrong circumstances it could cause the battery to overheat.
Sent from my Pixel 3 XL using Tapatalk
superchilpil said:
My guess about the amount of difference in the battery display vs percentage is to protect people from this reason. To keep them off of the lower end of the battery because it's damaging to the battery and under the wrong circumstances it could cause the battery to overheat.
Sent from my Pixel 3 XL using Tapatalk
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While I can see that , i'm currently @ 100% in status bar, but 98% in the capacity file. and it won't go above that currently.
This kind of makes sense given how the battery jumps erratically from 100% to 98-06% too when discharging
masri1987 said:
While I can see that , i'm currently @ 100% in status bar, but 98% in the capacity file. and it won't go above that currently.
This kind of makes sense given how the battery jumps erratically from 100% to 98-06% too when discharging
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What are you calling the capacity file? Battery in settings?
Tulsadiver said:
What are you calling the capacity file? Battery in settings?
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this file > sys/class/power_supply/battery/capacity
So, just FYI, this is probably why i found charging it in TWRP to be the most accurate...
When i charge my phone up to 100% in twrp, i boot up phone, look at the capacity file and it reflects spot on what the status bar says, and it continues to do that throughout entire discharge.
superchilpil said:
If I remember correctly Lithium batteries actually last longer if kept above the 60% range and taken off the charger when they're completely full or maybe a few percent before. It's the lower end of the battery percentage that actually damages the battery if it's kept there for too long. The lower the voltage the higher the resistance in the battery, this is going to cause heat in the battery, so the way you're charging your battery is most likely damaging. I might be wrong but battery tech has changed over the years, and some old misconceptions still exist.
My guess about the amount of difference in the battery display vs percentage is to protect people from this reason. To keep them off of the lower end of the battery because it's damaging to the battery and under the wrong circumstances it could cause the battery to overheat.
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The OP of the ACC discussion thread has some good links to studies done on Li-Ion batteries. It's a long read, but the summary is that you'll want to keep your temperatures as low as possible, and the battery itself between 30% to 80%. There are also some factors related to voltage that I don't really understand, but I do know that ACC manages the charging voltage to reduce strain while charging. The recommendation by the ACC developer for longevity is ~41%. That is within the 30% to 80% range, and I trust his judgement.
As for the other concerns in this thread, I don't think the difference in numbers serves any functional purpose other than to be annoying. It turns out that the one shutdown I had previously must have been a fluke, because now the battery in the statusbar will just sit there at 1% while the actual battery capacity ticks down, before forcefully shutting off at around 2% actual capacity. I don't even get the graceful "battery is empty, shutting down" message anymore.
Because the battery level reported by the capacity file is closer to zero than the statusbar one (simply because it shut down when that number was closest to zero), I'm inclined to believe it's the more accurate measurement. It's totally unrealistic to believe that the last 1% of the battery lasts as long as the previous 10%.
I can understand Google making the battery report a lesser number in order to protect the battery from the user, but that argument doesn't work if the phone just sits at 1% forever until it shuts down, which it has been doing for me. And the difference in numbers is just insane. Just today, the statusbar reported 2%, when the system reported 17%. A fifteen percent difference is absolutely absurd. I can understand a modest 3-5%, but this is just ridiculous.
I'm hoping there is a clever solution for this soon, or that the April update addresses it, because it's driving me crazy.
I tried this and the results from both commands were identical. I'm running the March update, rooted, and Kirisakura kernel.
Face_Plant said:
I tried this and the results from both commands were identical. I'm running the March update, rooted, and Kirisakura kernel.
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Thanks for letting me know.
This is so weird. Maybe my battery is just horribly uncalibrated?
ubergeek77 said:
Thanks for letting me know.
This is so weird. Maybe my battery is just horribly uncalibrated?
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Maybe it's time to start fresh with a full wipe/format and reinstall the March update? Maybe ACC is causing the issue? Have you tried Battery Charge Limit? That's what I use.
Why would you only charge your battery to 40%? I understand to prolong the life of the battery, but to what extent is going to do that.
You are shortening the amount of time needed between chargin. How much time does the battery last before you need to charge it again when you only charge it 40%?
If I am misunderstanding this, I think it would make more sense to keep the charge between 40%-80%.... Even if this is the case, how long does a charge last when you only use about 40% of it's capacity?
ubergeek77 said:
The OP of the ACC discussion thread has some good links to studies done on Li-Ion batteries. It's a long read, but the summary is that you'll want to keep your temperatures as low as possible, and the battery itself between 30% to 80%. There are also some factors related to voltage that I don't really understand, but I do know that ACC manages the charging voltage to reduce strain while charging. The recommendation by the ACC developer for longevity is ~41%. That is within the 30% to 80% range, and I trust his judgement.
As for the other concerns in this thread, I don't think the difference in numbers serves any functional purpose other than to be annoying. It turns out that the one shutdown I had previously must have been a fluke, because now the battery in the statusbar will just sit there at 1% while the actual battery capacity ticks down, before forcefully shutting off at around 2% actual capacity. I don't even get the graceful "battery is empty, shutting down" message anymore.
Because the battery level reported by the capacity file is closer to zero than the statusbar one (simply because it shut down when that number was closest to zero), I'm inclined to believe it's the more accurate measurement. It's totally unrealistic to believe that the last 1% of the battery lasts as long as the previous 10%.
I can understand Google making the battery report a lesser number in order to protect the battery from the user, but that argument doesn't work if the phone just sits at 1% forever until it shuts down, which it has been doing for me. And the difference in numbers is just insane. Just today, the statusbar reported 2%, when the system reported 17%. A fifteen percent difference is absolutely absurd. I can understand a modest 3-5%, but this is just ridiculous.
I'm hoping there is a clever solution for this soon, or that the April update addresses it, because it's driving me crazy.
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While I agree it's absurd if it in fact is showing a 15% difference, but where is the proof that such a thing is occuring?
I've read a few articles that talk in depth about lithium ion and the takeaway is to charge your device TO 75-80% and remove it at 30. Charging to 40% and completely discharging it is in fact damaging the OP's device and that's what I was trying to say.
Sent from my Pixel 3 XL using Tapatalk
superchilpil said:
While I agree it's absurd if it in fact is showing a 15% difference, but where is the proof that such a thing is occuring?
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I've already given proof. The proof is that the battery value produced by running "dumpsys battery" does not match the actual battery value, as read by the kernel, under "/sys/class/power_supply/battery/capacity." For clarification, the statusbar uses the value output by "dumpsys battery," which has been the incorrect value for me for almost a month now. SO's Pixel 3 XL is doing the exact same thing.
Further proof is that this offset doesn't serve any functional purpose. You would think that this kind of offset would be a way to protect the battery from the user, but that argument only works if the phone shuts itself down before the actual capacity reaches zero. That doesn't happen.
Instead, once the statusbar reaches 1%, it will just stay there indefinitely until the phone doesn't have enough voltage to keep itself on.
For example, let's say I'm monitoring the battery level in a terminal. When my statusbar says 2%, the kernel reads the battery as being 16%. It takes 10 minutes for the statusbar to reach 1%, and at the same time, the kernel battery reading will show 15%.
However, in a further 10 minutes, the phone does not shut off. Instead, the kernel battery reading will continue to tick down - 14%, 13%, ... 8%, 7%, etc - until the phone shuts off due to low voltage. During this time, the statusbar will continue to display 1%, despite the fact that the actual battery level is depleting.
No graceful shutdown, and the statusbar never reaches 0%. As such, I no longer see the "Battery Empty, shutting off" message where the phone shuts itself down gracefully.
I've kept my Pixel 3 XL updated with the latest updates and Kirisakura kernel. ACC (default settings) and my battery was doing fine until around the March update when I started a difference in reported battery level between the status bar and system that worsened and grew to 15% or more (I don't exactly remember). Also the status bar battery level would hang at 1% for a ridiculously long time. After uninstalling ACC and a several of charging cycles it got better (and the April update). Now my difference is 3%.
what happens if we delete that battery file? does it regenerate on it's own?
Got the same error with a Pixel 3, /sys/class/power_supply/battery/capacity is about 10% higher than dumpsys.
Is this why my phone shuts down at 14% battery level? I'll get a notification my battery is dying, check it, it'll be between 12-15% battery left, shut down 30 seconds later, and I can't reboot bc battery is dead. When I plug it in, then boot back up, it only says it is at 2 or 3%. I'm locked down bl because I thought maybe some root apps were messing with it, and I've even tried on q beta, but still early shutdown issue. Not really bothersome as I get 7 hrs or better screen on time, but it is curious....
Bryanx86 said:
Is this why my phone shuts down at 14% battery level? I'll get a notification my battery is dying, check it, it'll be between 12-15% battery left, shut down 30 seconds later, and I can't reboot bc battery is dead. When I plug it in, then boot back up, it only says it is at 2 or 3%. I'm locked down bl because I thought maybe some root apps were messing with it, and I've even tried on q beta, but still early shutdown issue. Not really bothersome as I get 7 hrs or better screen on time, but it is curious....
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I have a similar situation. It starts with 20-25%.
I think this started for me with q.
I wiped my device and flashed factory image to a/b slot. About 3 times .
How is your device going?
RMA is on the way....