Win10 Anniversary: Battery works great, indicator reads incorrect

[Windows Central Question]

Battery charges fully as normal yet the indicator stops at 80%. Unplugging and using the battery power the indicator stays at 80% for a long period of time until the battery gets below the 80% mark then the indicator functions as normal.

Restarting the tablet the indicator boots to show 100% yet doesn't change until battery power gets to 80%.

Any help on fixing this would be greatly appreciated.

 

[Rohn59]

One of my tablets does exactly the same thing. So far I haven't been able to find a fix. I might do a reinstall but I haven't had the time. I hate to have to reinstall just for this issue as everything else works fine.

 

[RowdyRocket]

I also have this issue and have tried everything I can think of, uninstalled and reinstalled everything in device manager relating to power and battery but no luck, I'm stumped. Not wanting to do a complete system reinstall only to have it happen again. Seems to be a windows issue but haven't found many people complaining about it. This is the first forum post I've found relating to it.

 

[Chintan Gohel]

Battery charges fully as normal yet the indicator stops at 80%. Unplugging and using the battery power the indicator stays at 80% for a long period of time until the battery gets below the 80% mark then the indicator functions as normal.

Restarting the tablet the indicator boots to show 100% yet doesn't change until battery power gets to 80%.

Any help on fixing this would be greatly appreciated.

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One of my tablets does exactly the same thing. So far I haven't been able to find a fix. I might do a reinstall but I haven't had the time. I hate to have to reinstall just for this issue as everything else works fine.

I also have this issue and have tried everything I can think of, uninstalled and reinstalled everything in device manager relating to power and battery but no luck, I'm stumped. Not wanting to do a complete system reinstall only to have it happen again. Seems to be a windows issue but haven't found many people complaining about it. This is the first forum post I've found relating to it.

so all of you have tablets which don't show any battery percentages above 80%? Can you all share the tablet models and OS versions?

 

[RowdyRocket]

Mine is a Nextbook Flexx 11 with the latest version of Windows 10 (anniversary) battery shows exactly 80% at full charge just as the top post says. It's been doing it for several months even before the anniversary update.

 

[Chintan Gohel]

Mine is a Nextbook Flexx 11 with the latest version of Windows 10 (anniversary) battery shows exactly 80% at full charge just as the top post says. It's been doing it for several months even before the anniversary update.

then it might be upon the manufacturer to send a firmware update or a driver update

 

[RowdyRocket]

Perhaps. It worked fine originally and I haven't found many others with the same issue. I've updated my drivers to the latest I could find. I'm out of ideas.

 

[Chintan Gohel]

Perhaps. It worked fine originally and I haven't found many others with the same issue. I've updated my drivers to the latest I could find. I'm out of ideas.

How to generate a Battery Report in Windows 10 | Windows Central

see what that has to say

 

[RowdyRocket]

Thanks Chintan! It did return some useful information.

Installed batteries
Information about each currently installed battery
BATTERY 1
NAME SR Real Battery
MANUFACTURER Intel SR 1
SERIAL NUMBER 123456789
CHEMISTRY LION
DESIGN CAPACITY 33,300 mWh
FULL CHARGE CAPACITY 42,417 mWh
CYCLE COUNT -

Why would the design capacity be lower than the full charge capacity?

The design capacity is 80% of the full charge which is the battery indicator reading at full charge.

Also why would it read 100% after reboot?

And then retain a 100% reading until it drops below 80%?

For example I've been using it for two hours now and it still says 100%

Thanks again for all your help!

 

[RowdyRocket]

Checked my actual hardware. My batteries are definitely 33,300 mWh (3.7v x 4500mAh x 2).

Any clue why Full Charge Capacity would be set so high or how I can change it?

Anyone else having this issue?

 

[Chintan Gohel]

It looks like the update messed up the actual value of the battery so it thinks the charge is reaching 80% only instead of 100%

 

[RowdyRocket]

Not sure if was the last update or what, it just started working again.

Here's my battery report now...

Installed batteries
Information about each currently installed battery

BATTERY 1
NAME
SR Real Battery
MANUFACTURER
Intel SR 1
SERIAL NUMBER
123456789
CHEMISTRY
LION
DESIGN CAPACITY
33,300 mWh

FULL CHARGE CAPACITY
33,481 mWh
CYCLE COUNT
106

Thanks for all the help!