Battery and Charging Improvements
If Apple is going to try and tackle sleep tracking and other fitness goals, it’s going to have to create an Apple Watch that can be worn 23 hours a day. Apple has made improvements in battery life year-over-year, usually as a result of improved power management in its chip designs rather than larger batteries, since there’s only so much battery that you can cram into a watch.
While multi-day battery life is likely still a pipe dream, Apple could add faster charging technology to allow users to juice up the Apple Watch Series 5 more quickly. This would allow users to wear the Apple Watch to bed and then drop it on the charger while they’re in the shower to have it ready to go for the day. A low-power mode could also help in this regard, especially if it could be used for sleep tracking.
It also looks like this year’s iPhone model will offer its own charging innovation to accompany the Apple Watch — the ability to wirelessly charge an Apple Watch directly from the iPhone itself.