[Q/A] [Power/Battery] Missing Battery Capacity

neko95 · Aug 10, 2015 at 8:18 AM

I reported already on the official asus forum regarding this issue, but I want to read people's suggestions here.
There is a missing capacity around 200+ or 200mAh + where it says battery is fully charge @ 100%.

The uploaded images as you can view, is from zenfone 5 and zenfone 2 screen shots, where in 100% fully charge of zenfone 5 capacity is accurate, while on zenfone 2 there is missing capacity.
See attached images.

you may check yours, no need root.
Using ASUS File manager, navigate to root of internal storage, (must uncheck "Hide system files" first on the 3 dot menu) then navigate to sys/class/power_supply/battery/uevent, you may view the file by opening it with HTML viewer.

Many or majority had this bug.
Any explanations here or comments?

This could be the very reason why battery drops fast from 100% to 90%.

vrnsr · Aug 11, 2015 at 7:55 AM

This might also be linked to my problem- my phone dies when it gets to 25-39% battery.
Is this file editable?

neko95 · Aug 12, 2015 at 1:30 AM

Yes it is, do a full charge and view your battery capacity.

vrnsr · Aug 12, 2015 at 5:03 AM

Now my phone goes from 100 to 0% in 40 minutes. At least it reaches 0%... battery behaviour is erratic

sumitgreat87 · Aug 10, 2015 20 0 0

Hello
My firmware version is 2.19.40.22 WW, which I updated from asus website.
Earlier phone was working fine, but after update battery charges from 80% to 100% in just 2-3 minutes & discharges till 70% very quickly. I didnt note the earlier version of the device.
Please anyone guide me which is the best firmware version for ZE551ML, 4gb/32gb version.

Thanks.

sumitgreat87 · Aug 10, 2015 20 0 0

Latest firmware version 2.20.40.59 also has the same issue

.
How to fix this issue???
Anyone???

$umit

pato2015 · Aug 13, 2015 at 10:42 PM

Not only 200...but im losing 300 ...

everdred · Jan 2, 2013 97 55 0

Mine seems to operate normally but shuts down at 40%

neko95 · Aug 14, 2015 at 2:29 AM

Try to check your capacity.. Still this is not fixed but was reported earlier.

Capataz · Aug 19, 2015

Can battery calibration have anything to do with this? I just checked mine and its at 3000. (That's the correct value, right?)

I do remember "calibrating" the battery when I first bought it. The battery was flaky when I was using it for the first time (phone died on me at 32%), but after some calibration using apps and some specific steps, my battery is better than ever.

EDIT: Okay I take that back. I checked again and it's 2700 mah at 100%, shame. If there's a way to fix this, it would be awesome. This seems to be a miscalibration as the capacity shows 3000 mah. Or is that 200 mah a reserve or a buffer so you would not totally drain the battery?

EDIT 2: Tested this out some. Seems to be a hit or miss. Check my answer below.

Hmd74 · Sep 8, 2012 54 4 0

Oh I just checked it and more than 1000 is missing :|

POWER_SUPPLY_NAME=battery
POWER_SUPPLY_STATUS=Full
POWER_SUPPLY_HEALTH=Good
POWER_SUPPLY_PRESENT=1
POWER_SUPPLY_TECHNOLOGY=Li-poly
POWER_SUPPLY_VOLTAGE_NOW=4376000
POWER_SUPPLY_CURRENT_NOW=72000
POWER_SUPPLY_ENERGY_NOW=0
POWER_SUPPLY_CAPACITY=100
POWER_SUPPLY_CAPACITY_LEVEL=Full
POWER_SUPPLY_TEMP=392
POWER_SUPPLY_MANUFACTURER=(null)
POWER_SUPPLY_MODEL_NAME=(null)
POWER_SUPPLY_SERIAL_NUMBER=(null)
POWER_SUPPLY_CURRENT_AVG=76000
POWER_SUPPLY_CHARGE_FULL=3000
POWER_SUPPLY_CHARGE_NOW=1334

Ani Debbarma · Jul 17, 2015 12 1 0

Mine worse

POWER_SUPPLY_NAME=battery
POWER_SUPPLY_STATUS=Not charging
POWER_SUPPLY_HEALTH=Good
POWER_SUPPLY_PRESENT=1
POWER_SUPPLY_TECHNOLOGY=Li-poly
POWER_SUPPLY_VOLTAGE_NOW=3793000
POWER_SUPPLY_CURRENT_NOW=-353000
POWER_SUPPLY_ENERGY_NOW=0
POWER_SUPPLY_CAPACITY=44
POWER_SUPPLY_CAPACITY_LEVEL=Normal
POWER_SUPPLY_TEMP=391
POWER_SUPPLY_MANUFACTURER=(null)
POWER_SUPPLY_MODEL_NAME=(null)
POWER_SUPPLY_SERIAL_NUMBER=(null)
POWER_SUPPLY_CURRENT_AVG=-492000
POWER_SUPPLY_CHARGE_FULL=3000
POWER_SUPPLY_CHARGE_NOW=1254

Capataz · Aug 16, 2015 at 5:07 AM

You're battery is not at 100%, you're at 44%, so of course it's going to be low. Charge to 100% then repost your results.

hurry.man · Feb 19, 2012 2 0 0

Any solution yet?

I am loosing 301mAh. I already calibrated it, but problem still exist. Is there any solution yet?

Capataz · Aug 19, 2015

After reading about jump charging, battery calibration etc. I decided to do some "test". I plugged my phone after consuming only 2% of battery and charged back to 100%.

And it seems that the POWER_SUPPLY_CHARGE_NOW value changes everytime you charge your battery to 100%. I don't know why this happens or what this means. I do know that you can "increase" that value by doing what I just did (charging to 100%, let it sit idle until it's at 95% or so, then charge back to 100%).

EDIT: POWER_SUPPLY_CHARGE_NOW value seems to change each time you charge your battery, regardless if you charge it to 100% or not. Check my comment below.

sumitgreat87 · Aug 10, 2015 20 0 0

Will the battery charge till 3000 by this method?
Every time it needs to be done or this can be done once and than calibrate the battery?

Capataz · Aug 19, 2015 at 1:10 AM

It seems that the value of POWER_SUPPLY_CHARGE_NOW changes, not only when you charge to 100%, but each time you plug your phone. Mine just got off from charging at 91%, and I computed what would be the 100% value of POWER_SUPPLY_CHARGE_NOW and it's 2819. I've had different values each time: 2700, 2701, 2644, 2688 and now 2819.

I'm skimming through articles and posts about this and there seems to be a bug about x86 processors reporting battery status? I'm not sure about the whole technical stuff, so hopefully someone who understands this would chime in.

vrnsr · Aug 19, 2015

Oh you guys gonna love this

POWER_SUPPLY_NAME=battery
POWER_SUPPLY_STATUS=Not charging
POWER_SUPPLY_HEALTH=Good
POWER_SUPPLY_PRESENT=1
POWER_SUPPLY_TECHNOLOGY=Li-poly
POWER_SUPPLY_VOLTAGE_NOW=4338000
POWER_SUPPLY_CURRENT_NOW=-286000
POWER_SUPPLY_ENERGY_NOW=0
POWER_SUPPLY_CAPACITY=100
POWER_SUPPLY_CAPACITY_LEVEL=Full
POWER_SUPPLY_TEMP=391
POWER_SUPPLY_MANUFACTURER=(null)
POWER_SUPPLY_MODEL_NAME=(null)
POWER_SUPPLY_SERIAL_NUMBER=(null)
POWER_SUPPLY_CURRENT_AVG=-224000
POWER_SUPPLY_CHARGE_FULL=3000
POWER_SUPPLY_CHARGE_NOW=4857

After 2 minutes
POWER_SUPPLY_NAME=battery
POWER_SUPPLY_STATUS=Not charging
POWER_SUPPLY_HEALTH=Good
POWER_SUPPLY_PRESENT=1
POWER_SUPPLY_TECHNOLOGY=Li-poly
POWER_SUPPLY_VOLTAGE_NOW=4275000
POWER_SUPPLY_CURRENT_NOW=-426000
POWER_SUPPLY_ENERGY_NOW=0
POWER_SUPPLY_CAPACITY=95
POWER_SUPPLY_CAPACITY_LEVEL=High
POWER_SUPPLY_TEMP=383
POWER_SUPPLY_MANUFACTURER=(null)
POWER_SUPPLY_MODEL_NAME=(null)
POWER_SUPPLY_SERIAL_NUMBER=(null)
POWER_SUPPLY_CURRENT_AVG=-409000
POWER_SUPPLY_CHARGE_FULL=3000
POWER_SUPPLY_CHARGE_NOW=4732

Capataz · Aug 19, 2015 at 4:46 AM

Haha wow, so your ZF2 somehow managed to go super saiyan!

Maybe that's it? Maybe all this does not mean anything at all?

I've never had any battery problems with the ZF2 so far. I charge by 15%, take it off charging at around 96%. I make it a practice to leave a charge higher than 30% when I will let it sit idle overnight (luckily, quickcharge makes this easy). And with that I've always been satisfied with the battery life.

Skybong · Aug 20, 2015 at 3:44 PM

Hi All,

I had the same issue with my phone where I'm losing around 1200+.
I charged my phone using my Nexus 7's charger and it somehow resolved the issue. I charge it from 40% to full and it now shows 2900+.
It might be with the excessive used of quick charging.

[Q/A] [Power/Battery] Missing Battery Capacity

Senior Member

Attachments

Senior Member

Senior Member

Senior Member

Member

Member

Senior Member

Senior Member

Senior Member

Member

Senior Member

Member

Member

New member

Member

Member

Member

Senior Member

Member

New member