So how were reviewers getting 10-12 hours on the 7840U 13 inch? I'm getting 4-5 and I stupidly bought used. Trying to fix battery before I sell it at a loss and buy a Legion.

I don't get it, laptops with bigger oled screens and dgpus are actually getting 10-13 hours and this just seems ridiculous that casual browsing and youtube are killing my battery like this. My Dell XPS with a 1070 from 2019 and a 4K OLED screen had similar battery life so this just seems insane.