Since upgrading to latest Apple Watch beta, my watch stays 100% fOR 5-6 hours, then starts losing battery really quick in the next 4-5 and when it reaches 50% it shuts down.anyone noticing this?
I'll mention that I've been running the beta with no issues, others however have had battery issues, no sure if they are the same as the ones you describe but you'll have a bit more luck on the forum/section I directed you to, as this section is for iOS not WatchOS.