Apple Watch Battery issues
Since upgrading my phone to the iPhone 14 plus my Apple Watch battery drains quickly. Any suggestions as to what to do or why this would happen
Apple Watch Series 7, watchOS 9
Question marked as
Watch uses a LOT of battery
First check for damaged battery...
Charge the watch to 100% at bedtime.
Take it off charge,
Turn it OFF - hold in side button til you see the sliders and tap the tiny off button, top right.
In the morning turn it back on and it should be at least 95%. If NOT then the battery is damaged.
If the battery is OK then unpair the watch and then pair it again.
Test the watch for a day.
Unpair and erase your Apple Watch
If it still discharges unpair it and pair it again without restoring the backup.
Check that the iPhone is not using any security apps or VPN that can affect apps on the Watch. You don't need any of them and they can be incompatible with iOS16 on the phone.
see also
Batteries - Maximising Performance - Apple