watchOS 7.3.1 repairs serious Apple Watch charging problem

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watchOS 7.3.1 squashes a bug inApple Watch’s Power Reserve feature.
Power Reserve reduces drain on your Apple Watch’s battery. But there’s a bug.
Photo: Cult of Mac

To prevent your Apple Watch Series 5 or Apple Watch SE from refusing to charge when it’s in Power Reserve, you need watchOS 7.3.1. Apple rushed this update out on Monday specifically to fix this bug.

Any Apple Watch hit with this bug drains until it’s dead, and can‘t be recharged. But Apple will repair the affected devices at no cost.

Apple Watch owners plagued by bad battery life under watchOS 6

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Apple Watch Series 5 California Face
It could be one of many new faces.
Photo: Ian Fuchs/Cult of Mac

Apple’s recent watchOS 6 upgrade brought a host of new features and faces to Apple Watch. But it has also had a nasty impact on battery life for lots of upgraders.

Apple Watch Series 5 owners are reporting that their new wearable isn’t lasting as long as Apple promised it would in between charges. However, they’re not the only ones who are suffering.