Battery SAMSUNG or Deka

I get the exact same as you with my s9fe and s9, 16h and 11h, equal screen off, 100% usage.

The s9fe's get great screen on battery time much better than s9's in my usage.

On my A9+ I turned my display down to 60hz had it since February battery life is excellent.

I really like the Deka ETX12. Point is these batteries are bulletproof. They last longer than any other battery I have ever gotten. I highly recommend them.

I currently run a Deka Intimidator in my rig and it's been problem free for 3 years now

Note the XC5.0 still holds up very well here even with smaller 18650 or so cells.

Deka ETX15, Deka makes a great battery and they’re sold under a few manufacturers.

Happened to me too, the first day of usage. Weirdly, when i restarted, it dropped from 100 to 92. Then another time from 80 something to 60 something. It was probably some battery reading issue, cuz the overall runtime of 10hrs of screentime was not affected.

I had 3 such tablets in a row. 3 times the worst battery. I'm very disappointed.

I recently got one, somehow it feels less. Idk if it’s because of the software but it seems to be draining even while being idle. Which is weird. People are quoting 7-9 hrs of sot and i feel like am not getting anywhere near that.