Ever since my watch updated on it’s
own it has not been staying charged throughout the day. My watch use to stay charged for almost two days without recharging. What is the deal?
Apple Watch Series 4, watchOS 7
There could be some new feature now enabled by default in that update that is causing it.
Have a look in here for some typical things to look for:
Batteries - Maximizing Performance - Apple
https://www.businessinsider.com/why-does-my-apple-watch-die-so-fast
Watch will not stay charged after update
