Bro, I'm not from samsung company. I just shared my personal experience.. If you want more SoT, you can use 60hz (~20% improvement on battery service). I'm not forcing you to use it.. just I gave you a way..
If you use continuously, you may get 7-8hrs SoT with 60HZ motion smoothness. You know the battery also drain during screen off which isn't counted for SoT.