How To Increase Iwatch Battery Life. With watchOS 7 your Apple Watch learns from your daily charging habits to improve the lifespan of your battery. Apples tips for maximising battery life and battery lifespan on Apple Watch not iWatch are detailed here.

Keep in mind that you wont be able to restart while charging. Apple believes the battery will do the job well. Apple estimates most people will get an average of 18 hours of battery life from one full charge depending on use.
The new Apple Watch 6 for example rates about the same expected battery life as the Apple Watch 5 and the Apple Watch 3 and none of them can go more than about a day without being charged.
If it seems like the battery on your Apple Watch isnt lasting as long as it should youre not alone. Users have complained about Apple Watchs battery life since its initial release and those complaints are not unwarranted. Your Apple Watch battery provides sufficient power to last for most of a typical day under normal usage. This feature called Optimized Battery Charging is designed to reduce the wear on your battery and improve its lifespan by reducing the time your Apple Watch spends fully charged.

