Battery Percentage Drop Suddenly

[Iamnishanta]

My battery is really performing weird since a month.

Battery percentage drops suddenly when I turn on my phone after sleep.

Suppose, I turn off my phone at 80% and I turn it back on after an hour, the battery will suddenly drop to 76% and it will remain at that percentage for 30-40 mins.

This problem occurs even during airplane mode or when the phone is switched off.

I have tried
• discharging to 0% and charging to 100%
• factory reset from settings 4 times
• battery calibration app
But nothing seems to work

And the best thing is that my battery usage is more or less still the same as I am getting 10 hour Screen On Time on average.

There's no problem with my network strength... Here's my battery stats, from stock and gsam.

 

[B. Diddy]

Welcome to Android Central! I don't have a direct answer for you, but I would say that 10 hours of screen on time is unusually high, so whatever you're doing, don't change anything!

 

[Iamnishanta]

Welcome to Android Central! I don't have a direct answer for you, but I would say that 10 hours of screen on time is unusually high, so whatever you're doing, don't change anything!

Yeah, it's a 4000mah battery, and the battery is working just as well as it was 2 years before, but the problem is the battery percentage reading.