Provided that the use is moderate, contacting notifications, having a GPS workout for 30 minutes, and sleep tracking to some extent, the Apple Watch Series 10 will last for approximately one and a half days. Apple Watch Series 10 takes 30 minutes to charge 80% also allowing the users to use it calmly to know as in case of just Series 9 where it took nearly 45 minutes to reach 80% With this fast charging capability, you will need the provided fast charger that comes with the watch and a charger adapter of at least 20W.