WatchOS 7.5 battery drain

Anyone else having a horrible battery life on the latest watch update? I have the series 5 on watch OS 7.5. Since the update my watch won’t make it 16 hours.


Before the update, I would be able to go to bed with my watch at 100%, use it for sleep mode and wake up alarm. Exercise in the morning for 30 minutes and go on my day. At night I would still have 20-30% battery before charging it. 

Doing the same routine, 2 days in a row my watch doesn't make it past lunch. I do not use the always on display function either.


Last night I reset my watch and restored from backup. Charged to 100%, went to bed wearing it, woke up this morning to 70%.


Hope a new update comes fast or wearing the watch is pointless with this terrible battery drain.

Apple Watch

Posted on May 27, 2021 2:35 AM

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Posted on Jun 25, 2021 3:11 AM

I’ve had the same issue.


After a week trying different routes, I’ve found what has worked and that is turning off the environmental sound measurements functionality in Privacy at least until Apple fixes the bug.


It looks like the functionality is running constantly in the back taking too much power, since the battery drains at a constant pace.


Hope it helps others!

252 replies

Sep 11, 2021 9:54 AM in response to wrc-thor

I contacted the service and they really have no clue. I told them also my phone passed from 96% to 89% after the last updates (phone+watch). The phone is a 12, bought as soon as they release it. Since then, it lost 4% battery healt. Now 7% in a couple of months. They replied me: “89% is still good” 🤷🏻‍♂️. Same regarding the watch. I told them that it was 96% before the last update and it now reached 90% in two months. Adding that it now last 12 hours when it was 24 hours before, and I have to charge it every night. They replied me that 90% is good for a watch that old (series 4), and it’s “normal if I charge it every day and not every 2-3! Wtf, I have to charge it every day if I want to use it, don’t even get the issue! Useless

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WatchOS 7.5 battery drain

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