How to calibrate battery? - Nexus 4 Q&A, Help & Troubleshooting

My battery stats and consumption have been pretty good and whatnot but I just realized it's off and sometimes doesn't count down consistently. But then it will catch up real quick. I am assuming the battery chip/driver are able to measure amps and not guesstimate voltage because of this behavior. I charged battery all the way up, unplugged, turned power off, plug back in til full and started up again but the behavior is still erratic. I am pretty sure I am getting somewhat accurate readings, it is just doing so in an erratic method. Ideas or references I missed? Anybody else notice?
As a side note I thought I was losing 1-2% per 6-8hours of standby but I realized there is a bug or the battery driver doesn't read correctly in standby. Anybody notice this too?
I voided my warranty.

@rbiter said:
battery.
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The battery reporting is definitely inconsistent on this device. I've tried pinging it via terminal emulator to "force" it to re-poll voltage and capacity, with no luck, it doesn't update it to where I know it should be. Not sure if anyone has dissected this battery yet, many Li-Po's have an internal chip, not sure about this one.

I am quite sure it has a chip. Trying to confirm if it has a chip that measures amperage. I am guessing driver is bad or bugs.
I voided my warranty.

One thing I've noticed is that it seems to poll correctly if I charge to full and don't reboot at all. As soon as I reboot it starts flatlining after that point.
Sent from my Nexus 4 using Tapatalk 2

Here's my best example yet. Upon plugging in it's quickly gone from 15 to 25...err....29% however. If I charge to 100% and don't reboot after that it doesn't drift. Something breaks the phones ability to read voltage/capacity for some reason upon rebooting. Stock or not stock, same behaviour. A few reboots in there, a couple where the % went UP.
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What is the problem can any one point out why I am getting do less battery is it because of atooma or acuupedo
Sent from my Nexus 4 using xda app-developers app

There is no battery calibration method that is anything more than a placebo. Just flash your ROMs at 100% and don't charge your phone 5 times a day. Let it drain and fully recharge once in awhile. Past that, there isn't much to be done.
Edit: Franco mentioned in his kernel thread that the battery reporting seems a little wonky. He is hoping it is addressed in 4.2.2.

Charge your phone fully while it is off to 100 then do a battery star wipe. Let drain till around 5 to 10 from regular use and then charge all the way up.
And remember that batt wipes do nothing more than have your rom read the battery more accurately, it had nothing to do with giving it better battery life. You are gonna want to flash a more efficient kernel or rom to achieve that.
Sent from my SGH-T999 using xda app-developers app

estallings15 said:
There is no battery calibration method that is anything more than a placebo. Just flash your ROMs at 100% and don't charge your phone 5 times a day. Let it drain and fully recharge once in awhile. Past that, there isn't much to be done.
Edit: Franco mentioned in his kernel thread that the battery reporting seems a little wonky. He is hoping it is addressed in 4.2.2.
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Hard to find info about the li-po battery, especially the one in this phone. I wouldn't rule out poorly designed circuitry at this point either. Love the phone, question build quality.
Sent from my Nexus 4 using Tapatalk 2
---------- Post added at 12:29 PM ---------- Previous post was at 12:20 PM ----------
djpingpong said:
Charge your phone fully while it is off to 100 then do a battery star wipe. Let drain till around 5 to 10 from regular use and then charge all the way up.
And remember that batt wipes do nothing more than have your rom read the battery more accurately, it had nothing to do with giving it better battery life. You are gonna want to flash a more efficient kernel or rom to achieve that.
Sent from my SGH-T999 using xda app-developers app
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Wiping battery stats does nothing more than reset the current charge cycle's percent usage by app/process. That's it, it won't increase the accuracy of capacity reporting.
Sent from my Nexus 4 using Tapatalk 2

CMNein said:
Wiping battery stats does nothing more than reset the current charge cycle's percent usage by app/process. That's it, it won't increase the accuracy of capacity reporting.
Sent from my Nexus 4 using Tapatalk 2
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This is spot on. I tried to make that point earlier with my placebo comment, but some people are slow to catch on. Thanks for spelling it out.

Related

i think i have an ideea with our battery

our sgs think our battery its empty at 3,7v or 3,68.
if we could change the limit for the battery is considered empty, somewhere in the 3.1 to 3 V, thinking how much could keep a battery, the phone started.
if the battery is not empty exaggerated, I believe it can be used without problems.
Sony Ericsson uses batteries to 3.2 somewhere if I remember well.
I dont know how I could do something like that, that's why I posted here this idea.
from here http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
"Power loss through Protection Circuit
Besides common aging, a Li-ion battery can also fail because of undercharge. This occurs if a Li-ion pack is stored in a discharged condition. Self-discharge gradually lowers the voltage of the already discharged battery and the protection circuit cuts off between 2.20 and 2.90V/cell. Some chargers and battery analyzers (including those from Cadex) provide a wake-up feature, or “boost,” to re-energize and recharge these seemingly dead Li-ion batteries."
If v can do the cut off to 3.5v we.will gain roughly 35% more life. But ib think it will take 5hrs for a full change
Sent from my GT-I9000 using XDA App
Its a lipo battery that is the saftey cutoff point...same as RC cars...going to low will kill your battery...
Sent from my GT-I9000 using XDA Premium App
not too low
not to low, low enoug to have long battery life.
for charge dont matter 2,5 ore to 4. i dont think wil be 5
good idea....do it°!
I'm ready to test it, but how we can change limitation of battery ?
Explain your idea.
Yes, could you explain more ? Do you know how to do it ?
I have few ideas on battery issue too:
1)
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2) real rocket for your galaxy:
Great idea but a moot one at the same time I'm afraid. No one knows more abt batteries than Koreans. They live for them. If this limit could have been set lower it would be lower. Also I have never heard of battery firmware being flashable through a phone.
Sent from my GT-I9000 using XDA App
.
schiphol said:
Great idea but a moot one at the same time I'm afraid. No one knows more abt batteries than Koreans. They live for them. If this limit could have been set lower it would be lower. Also I have never heard of battery firmware being flashable through a phone.
Sent from my GT-I9000 using XDA App
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sony ericsson use this trick to have longer battery life, anyway we dont use a battery 2 years.
i dont now how to implement this trick.
I have the battery monitor app and in stock XXJVK, at 01% the battery is between 3.4 and 3.5 volts.
Fully charged is 4.18 volts or thereabouts but this falls fairly quickly to 4.0 volts which is where the battery stats need to be accurate to show true percentage and not just jump down to 80%.
Fully charged for me takes about 3 hours but I charge all my batteries (three using a separate charger and not in the phone itself.
markdj57 said:
I have the battery monitor app and in stock XXJVK, at 01% the battery is between 3.4 and 3.5 volts.
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+1.
Swyped from another GALAXY
xenos126 said:
If v can do the cut off to 3.5v we.will gain roughly 35% more life. But ib think it will take 5hrs for a full change
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It's not linear. It falls rapidly at lower voltage. You would gain about 5% I think...
next time
i have a multimeter, next time i verify de power of my battery.(i am surre it not 3.4-3.5v)
darckreign1984 said:
i have a multimeter, next time i verify de power of my battery.(i am surre it not 3.4-3.5v)
Click to expand...
Click to collapse
Just use the battery monitor app...
But feel free to use a multimeter if you want.
Sent from my GT-I9000 using XDA App
markdj57 said:
Just use the battery monitor app...
But feel free to use a multimeter if you want.
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
battery monitor indicate 3.680v

[Official] battery stats thread

Once we get charged up (and back down), let's see how the battery life in the S4 compares to the quad core.
Please make sure to include your screen on time, as that is the best indicator of light/heavy use.
pleasantly surprised
I can't believe how good the battery has been so far, 84% after 13hours (over night)
I am a light user. still - that is impressive for stock. I never got close to that with my OG Epic on stock which was usually 3% per hour.
davidmumper said:
Once we get charged up (and back down), let's see how the battery life in the S4 compares to the quad core.
Please make sure to include your screen on time, as that is the best indicator of light/heavy use.
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Mostly on WiFi
Screen brightness set to max
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Sent from my SPH-L710 using Tapatalk 2
1h, 3M Battery down to 76%.
screen on for 38 min, 33% of battery usage.
Heres mine on a first day full charge...
Not too bad for first day with moderate to heavy use!
This is heavy usage. Screen on time of 3.5 hours. Downloading Max Payne and a lot of apps. Downloading and listening to audio on Google chrome. Lots of Pulse usage. Games, YouTube, and 30 minutes of phone calls.
*edit* Bluetooth and wifi on all day long.
Sent from my SPH-L710 using XDA
More information is better for those of us living vicariously through you guys. Remember to include screen-on time. Thanks!
Here's mine for the first full day. Should my cell idle be taking up that much of the battery?
Sent from my SPH-L710 using Tapatalk 2
one thing im NOT noticing here is Allshare Service taking up a high percentage in your guys battery stats...
on mine its been at 7-9% and i dont know why, i have something waking up my phone when the screen is off and it might be that... ive forced stop, but i check later and its active again, ive disabled the service and the Allshare play in the application manager but still comes back on... hmmm i think im gonna have to root and just get rid of that file, or freeze it or something
Question... Does having all the motion settings on effect the battery? Also does having the NFC and sbeam on hurt the battery?
lse4 said:
Question... Does having all the motion settings on effect the battery? Also does having the NFC and sbeam on hurt the battery?
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Click to collapse
in addition, the eye tracker thingy?
This is only the 2nd cycle. Going to wipe stats after this charge
I'm still waiting for the second cycle to finish I have the motion controls on and the eye thing and I had no drop at all overnight
sewhuy said:
This is only the 2nd cycle. Going to wipe stats after this charge
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Click to collapse
I wish I could get some stats like that. The screenshots are while I was sleeping and 7% seems like a lot of drain for it just sitting there. Only thing on was wifi. Cell standby time on is always the same as the time on battery, is that normal?
edit: the phone now shows 79% battery left with time on battery of 12h 46m; cell standby the exact same; screen on at 9% with time on of 48m. I'm fully stock and running power save mode.
Here are my stats. I think the battery life isn't too bad so far but we will see.
are the battery stats suppose to reset when you restart the phone? For dinner reason my persist even after a reboot
Sent from my SPH-L710
xtrezpasor said:
are the battery stats suppose to reset when you restart the phone? For dinner reason my persist even after a reboot
Sent from my SPH-L710
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No, they will carry over until you re-charge or change the battery.
I was going to make a thread like this, but it was already here! Here are my results after my second full charge and regular usage. The results are on par with my fully modified and decked out Epic. Of course, this device has a bigger battery, but it also has a larger screen. Between the hardware and software upgrades, I'm very impressed with the stock battery life. This includes wifi on at all times as well as signal w/data. Some motion features are enabled, nfc is not, and google sync is off (I use stock email). Now how much further can this be improved?? Remember not to be discouraged, Screen On times will vary depending on what the phone is used for. Showing pictures is much less battery intensive than watching YouTube videos.
DEVICE: Sprint Galaxy S III
ROOT: Non-Rooted
ROM: Stock
POWER-SAVE: Disabled
Calibrated
sewhuy said:
Calibrated
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What is involved in calibration?

[BATTERY] Stats, Comparisons, Improvements

This thead is dedicated to share and discuss battery stats on the new Nexus 7, that offers an hour more operation according to Google
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These are from pulling it out of the box and using it. Started somewhere under 50%. Looks like it will match or exceed first gen nexus 7.
Sent from my Nexus 7
One more to go along with the two above.
Sent from my Nexus 7
Delete
Awesome! Looks like it could do 6-8 hours screen time under heavy usage.
Here you go. That includes YouTube, xda, browsing, Netflix, and even some reading.
Sent from my Nexus 7 using xda app-developers app
Oh yes! And it's not even hitting full battery cycle, which should come after some 10 recharges. Not bad at all.
BoneXDA said:
Oh yes! And it's not even hitting full battery cycle, which should come after some 10 recharges. Not bad at all.
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Mine has only charged once, up to 97% from when i opened the box friday afternoon. So yea, its an energizer bunny, lol.
teh roxxorz said:
Mine has only charged once, up to 97% from when i opened the box friday afternoon. So yea, its an energizer bunny, lol.
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Very nice to see!
Look forward to standby drainage and browsing, video playback rundown.
Thats what i like to see !
Sent From My Fresh Nexus 7(2013)
casonswag said:
Thats what i like to see !
Sent From My Fresh Nexus 7(2013)
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I hope you eyes didn't dilate too much, lol.
teh roxxorz said:
I hope you eyes didn't dilate too much, lol.
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Click to collapse
Here's what my Nexus is doing
1rreverentZ said:
Here's what my Nexus is doing
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Whoa, sometimes by phone stats go crazy, but that one on the right is strange. Probably need to hit a few cycles to get the stats accurate.
Is it normal to see an uptick in battery even if the device is not plugged in to recharge? I'm guessing this might iron out after the battery stabilizes a bit, but I am definitely noticing that after use, if I leave the tablet on the table unplugged and return to it a while later, the battery reads (sometimes significantly) higher than when I left it. Battery history also shows a rise as well. I just think it's strange, as the unit was not actually plugged in or charging during that period.
bailyc said:
Is it normal to see an uptick in battery even if the device is not plugged in to recharge? I'm guessing this might iron out after the battery stabilizes a bit, but I am definitely noticing that after use, if I leave the tablet on the table unplugged and return to it a while later, the battery reads (sometimes significantly) higher than when I left it. Battery history also shows a rise as well. I just think it's strange, as the unit was not actually plugged in or charging during that period.
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My old phone used to mess with the stats. Let it run out of juice, charge full up with the device off, unplug, turn on and you'll have fresh battery stats.
From SlashGear Review
http://www.slashgear.com/nexus-7-2013-review-29292015/
Google quotes up to nine hours of HD video playback or up to ten hours of web-browsing from a full charge. Our own testing suggests these are pretty accurate estimates; with heavy use, including Netflix media streaming over WiFi, push email and social networking turned on, some photography, and browsing, we managed almost nine hours of use before the 2013 Nexus 7 ran out.
BoneXDA said:
My old phone used to mess with the stats. Let it run out of juice, charge full up with the device off, unplug, turn on and you'll have fresh battery stats.
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Click to collapse
Thanks for the suggestions. I'll try it and see how it goes. I have gotten excellent battery life out of the original Nexus 7, so I'm hoping for similar performance on the new one.
have any of you guys run into the battery with exclamation mark @ 0%? I plugged it in and i'm getting nothing to indicate charge is going up. If i turn off the tablet, the charge indicator works and it's charging. after a few hours though, the charge progress is still the same (starting from zero). any ideas?
thanks!
Is anyone having Google services cause serious idle battery drain? It has to be caused by some Google app I have installed. I want to start fresh with an aosp ROM and install one app at a time. Anyone have any experience with Google services causing lots of battery drain?
Sent from my Nexus 7 using Tapatalk HD
as of now this is my best battery life
Sent from my Nexus 7 using xda premium

Problems charging after latest t-mobile update

Has anyone had any trouble charging after the update? The one that promised optimized battery life? I always charge my phone in the morning so it's not just sitting at 100% during the night. I gave it almost 2 hours this morning and it only got to 67%. I used the Ampere app and it starts at like 100mAh and then slowly goes to about 800mAh and then fluctuates in between. I know nothing is wrong with the charger because I plugged in my note 3 with the same app and it showed 1200mAh which is what the charger is rated for. I've also had slightly worse battery life after updating. The day I updated I could only get 3:28 sot, and before updating I could easily get 4 and a half to 5+ sot. Anybody have a problem like this or maybe a fix?
Hello, yesterday was my first day after the update and my battery life went from 3.5 hrs SoT too 4.5-5.0 hrs. Yesterday was the first 5hrs of SOT I've ever had. I'm happy my device is normal. It all depends on the usage like today I'm using my phone a little more. I'm using more battery. But in not tripping if I wanted to save battery I know I could!! It's very possible.
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Sent from my SM-G935T using Tapatalk
Sent from my SM-G935T using Tapatalk
I had problems charging the phone using the wireless charger ,I put the phone on the charger overnight, when I wake up the phone was hot (that was the first time it happened)it was charged to 64%,plugged to the USB charger and it's been working normal since
Sent from my SM-G935T using XDA-Developers mobile app
Try restarting your phone. Might sound dumb I know but I've had instances where fast charging didn't work until I restarted or that my battery percentage was not "correct"
I've restarted many times now and tried wiping the cache but still nothing. The battery seems to be depleting semi-normally again, still not as good as it was but the charging still takes a long time.
Have you tried it without the app?
By the way, the phone using Qhich Charge 2.0 has built in software that communicates with the charger. No need for a 3rd party app.
I haven't had any problems charging after the update.
The app doesn't help charge the phone, it just shows how many mAhs are going into the phone from the brick. Since the phone has been charging so slowly I wanted to see if power coming in was being slowed or something for some reason
Gamecock33 said:
The app doesn't help charge the phone, it just shows how many mAhs are going into the phone from the brick. Since the phone has been charging so slowly I wanted to see if power coming in was being slowed or something for some reason
Click to expand...
Click to collapse
Ugh I am now having this issue after the update. I plus it in and it's now telling me it will take 5 hours to charge (lock-screen). Is your phone still doing the same?
takethebox said:
Ugh I am now having this issue after the update. I plus it in and it's now telling me it will take 5 hours to charge (lock-screen). Is your phone still doing the same?
Click to expand...
Click to collapse
Holy cow. From 90 minuites to 5 hrs? That's along time. I haven't charged yet since I don't need too till later tonigt.
Sent from my SM-G935T using Tapatalk
nano303 said:
Holy cow. From 90 minuites to 5 hrs? That's along time. I haven't charged yet since I don't need too till later tonigt.
Sent from my SM-G935T using Tapatalk
Click to expand...
Click to collapse
I just disabled fast charging. Restarted. Then re-enabled. Back to normal now.
Does the last update from tmobile does increase your battery life? Or at least gives you better battery.
Sent from my SM-G935T using Tapatalk
My battery life is about the same now, but it's still the charging part. It's shown it'll take about 3 hours to charge but when I let it charge yesterday it's still going as of now with 4+ SoT. So battery life is okay, it's the charging. I'll try disabling and restarting and see if that helps
Sent from my SM-G935T using XDA-Developers mobile app
If all else fails, do a factory reset. I did after this last updated since it seems like it was a pretty important one. Differently get better sot, better battery drain while idle. Everything is backed up in the cloud so it wasn't that big of a deal.
I've tried the reset, knowing that a factory reset would have to be next. But charging seems to be back to normal now. I still think it's a little slower than it was, but when I plug it in, it shows anywhere from an hour to an hour 20(when my phone is under 10%). I think it's coming back slowly
Sent from my SM-G935T using XDA-Developers mobile app

Could 7.1.1 battery drain be from apps not optimized

Optimize all apps on 7.1.1system apps is there a fast multi select way
Noticed upon boot never does it and after looking into battery history telling me to do this but setting's menu under apps don't have a method . By the way this is on pure nexus ROM.
7.1.1 seems to drain the life fast and my device is new 3/days old
Sent from my Nexus 6P using XDA-Developers Legacy app
Pure Nexus isn't great for battery life compared with other ROMs I've been on. Android doesn't allow some apps to be optimized. If your battery life seriously concerns you then you might want to try an app like Naptime which puts your phone into deep doze as soon as the screen goes off. You could also download a kernel manager if you don't have one and see if you are using a performance oriented governor or something more battery friendly.
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I took phone off charger at 8:49am by 25min later it persists to drain in 2% increment drops showing 5 hours left before 0% that's insane .
Not the 6p I remember when I had it once before the day it came out .
Any fixes any options recommendations
Sent from my Nexus 6P using XDA-Developers Legacy app
Try booting into safe mode and see if the problem persists.
androidddaaron said:
Optimize all apps on 7.1.1system apps is there a fast multi select way. Noticed upon boot never does it and after looking into battery history telling me to do this but setting's menu under apps don't have a method . By the way this is on pure nexus ROM. 7.1.1 seems to drain the life fast and my device is new 3/days old
Click to expand...
Click to collapse
If your phone truly is brand new, you're going to need to wait longer than 3 days to achieve optimal battery life. What is the date of manufacture in recovery>>barcodes? There are a few good apps that will tell you definitively what is draining your battery. BBS and GSam are two. It is also a great time to install Accubattery and get a benchmark on your current battery capacity vs. design.
redduc900 said:
Try booting into safe mode and see if the problem persists.
Click to expand...
Click to collapse
Does that seem normal for waking up to a 100% charge then seeing 5 hr left within the first 25min off charger
Sent from my Nexus 6P using XDA-Developers Legacy app
What am I looking for on safe mode ? Never did that. You telling me to run the device in safe mode as I would normally and watch the drain
Sent from my Nexus 6P using XDA-Developers Legacy app
androidddaaron said:
I took phone off charger at 8:49am by 25min later it persists to drain in 2% increment drops showing 5 hours left before 0% that's insane . Not the 6p I remember when I had it once before the day it came out . Any fixes any options recommendations.
Click to expand...
Click to collapse
The problem is not with stock Android 7.1.1. It could be your battery is defective or degraded. That's why I asked if your phone really is "brand new" or refurbished, and what the date of manufacture is. Install Accubattery and use it to calculate your battery's capacity vs. design.
Last few months my battery is also getting worse. Accubattery says capacity is around 2000mAh right now. I did often charge my battery, even when it wasn't below 50%. Maybe that killed it.
Sent from my Nexus 6P using Tapatalk
kj2 said:
Last few months my battery is also getting worse. Accubattery says capacity is around 2000mAh right now. I did often charge my battery, even when it wasn't below 50%. Maybe that killed it.
Click to expand...
Click to collapse
Not your fault mate, regardless of how you charged it. Battery was defective. Get an RMA if you can through Google or Huawei (even if it is out of warranty). If not, there are a few places selling good replacement batteries. Install yourself if you can, or take it somewhere to have the battery swapped out. Good luck to you.

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