by Dan Moren
Apple lays out Watch battery life
In soliciting questions for our Apple Watch FAQ, many people asked about battery life. Apple, no doubt aware of the concern, has published a pretty thorough evaluation of what you can expect from the Apple Watch in a variety of different use cases, including general use, working out, using it as a watch, and so on.
The general conclusion? Around 18 hours of life with a combination of time checks, notifications, app use, and workout with music via Bluetooth.
Of particular note:
Apple Watch battery performance claims are based on test results from the 38mm Apple Watch. A 42mm Apple Watch typically experiences longer battery life.
Not enough, it would seem, to be worth measuring, but probably a small increase. A larger case, after all, means a larger battery, but also a larger screen to power.