This is day 3 for me, and I'm actually seeing some
improvement over my last unit. It's still inside the first week, so all of this should be taken with a grain of salt, but I'm not unhappy so far!
Yeah, battery life for me is stellar since getting my replacement. I'm at 84% and it's estimating I have enough for 17 more hours and I've had it off the charger since like 7 AM this morning.