How to extend your Apple Watch battery life
Regardless of which Apple Watch model you have — from the olderSeries 3to the currentSeries 7— a battery life of roughly 18 hours after a fresh recharge is generally expected. The way you use and set up your watch determines the amount of real-time operation you’re likely to get, while Apple’s estimate relies on 90 time checks, 90 notifications, 45 minutes of app use, and a 60-minute workout with music from Bluetooth....