I upgraded my Apple Watch Series 7 Cellular to watchOS 9.3 yesterday and noticed a lot worse battery life. The battery goes from 100% to 0% in just 6 hours and is connected to Wi-Fi rather than Cellular. I have already reset it to factory settings and performed a hard reset, and the issue persists. I hope Apple did not do this on purpose. Is anyone else noticing the same?
Apple Watch Series 7
If the battery drains too fast after an update, see all the replies to:
Battery Drain since watchos 7.4 - Apple Community
WatchOS 7.5 battery drain - Apple Community
FWIW, in some cases, unpairing the watch, completely erasing it, then pairing and restoring the backup will resolve the battery draining issue after an update. (Simply unpairing and pairing again may not work.)
Unpair and erase your Apple Watch - Apple Support
Also, some people have found that simply waiting a few days after an update resolves the battery draining problem.
It is what comes of criticising the forum members for no reason.
Battery Draining After WatchOS 9.3 Update
