I have Garmin Forerunner 230 for 2 months. With firmware 5.40, battery went down about 5% per night with everything turned off except activity tracking.
After updating to 6.30 on Friday, battery went down from 100% to 84% in 5 hours! Then I decided to do factory reset, no watch face or wiget installed and everything turn off including activity tracking, it still consumes 10% per night.
Is there anyone also has the same problem?