I’vE notice an huge battery drain after updating my ultra 1 to watch os 10.1
Yesterday at 00.30 am I had about 65%, this morning at 6 am the watch was off with no battery remaining (only used for sleep tracking with default sleep app)
Charged for 30min and was at 50% now after 5 hours is at 24%
Short story 2 watches series 7 & 9 Both updated to 10.1 Both dying around 3 hours from 100% Tried restore. Didn’t help Spoke with Apple technician via phone recommended deleting all third party apps. Success 2% drain in 45 minutes.