Battery life is terrible right now with the new beta. It's always been a let down since coming from the Watch 3 Classic. I used to get 2.5 to 3 days with the watch 3 and my watch 4 always dies before the 2nd day is over. But now I'm getting about 12-20 hours with the beta release. Hopefully it can get a lot better before it's finalized for release.
