battery

[Chris Cook5]

I charged my Apple Watch 9 overnight like I always do and tonight it’s at 4%. I have never had that problem with battery draining, last night it was at 10%. I turned on optimized battery charging as it was off. My max capacity is still at 100%. What do you think is causing battery draining? i’ve had my watch 9 ever since it came out

 

[doogald]

First thing to try is to power off and power on. For me that usually fixes unexplained battery drain on the watch. If that doesn't work, generally I just unpair the watch and try pairing again (and then reevaluate in a few days, as the first day or two causes the battery to drain more after pairing.)

Unfortunately there is no tool to evaluate battery drain on watchOS, so otherwise you're just guessing at the cause.

FWIW there are a lot of random complaints about unexpected battery drain on watchOS 10.4, so it may be just a thing you'll need to wait on the next release for, too.