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All-day battery life is based on 18 hours with the following use: 90 time checks, 90 notifications, 45 minutes of app use, and a 30-minute workout with music playback from Apple Watch via Bluetooth, over the course of 18 hours.
General Battery Information. Apple Watch is so capable youâll want to wear it all day long. So we made sure we gave it a battery that lasts all day, too. Our goal for battery life was 18 hours after an overnight charge, factoring in things like checking the time, receiving notifications, using apps, and doing a 30âminute workout.