Battery SAMSUNG or ODYSSEY

If willing to pay for a Optima yellow top, I suggest you get an Odyssey battery instead. It's a much better battery for about the same price.

I finally spent the money on an odyssey extreme on my 7.3 along with an aftermarket starter and battery cables. Absolute game changer in the wintertime. I could leave it out in the cold for a week and it would start faster than the old battery setup would in the summer.

I’ve ran odyssey in my RZRs and they always held up through abuse and neglect.

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.

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 actually like this change. It's telling me the actual battery charge. What I don't like is at least on my S 8 Ultra is it hits 85%, then starts discharging the battery. The battery gets as low as 81% before charging again. Personally I think this charge / discharge cycle is going to be more harmful long term than just charging to 100% and holding there. So I ended up turning it back off.

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.

I've had the Tab S9 since launch and the battery has always been naff. It's a great tablet let down by lousy battery life.

Galaxy tab s9 has a very bad battery, confirming here