Apple has a habit of omitting battery capacity values for its products and prefers to measure battery endurance in hours instead. Fortunately, certification agencies post accurate MIA values for all products that pass through their database, and now China’s 3C agency has listed all the new Apple Watch models announced last week.
The Apple Watch SE (40mm) has the smallest battery of the newly announced watches at 245mAh. The 44mm Watch SE packs up to 296mAh. The Apple Watch Series 8 (41mm) has a 282mAh battery, while the larger 45mm version gets a 308mAh cell. The Watch Series 8 gets 18 hours of battery life with an always-on display, automatic motion tracking and fall detection, but an optional low-power mode axes some features and doubles it to 36 hours.
The Apple Watch Ultra boasts the largest battery capacity of any Apple Watch to date, with a 542mAh cell. Apple says the Watch Ultra will last up to 36 hours of regular use with an always-on display, automatic workouts and constant heart rate. Apple is introducing a low-power mode coming later this year, which should extend battery life to 60 hours on the Ultra.