What sort of usage?Managed to get 42 hours from a full charge. I have just put watch on charge as it's at 9%.
I know it's early days and the watch still hasnt fully learned usage patterns but I'm finding the battery at least as good as, if not better than my original Galaxy Watch 46mm
I'm not a heavy user compared to a lot of people and I've still got a lot of playing to do but the basics are the same as the old watch, one of the big differences is the new wearable app itself.