Apple is offering free repairs for the Apple Watch Series 5 and SE following reports of the wearables not waking up after going into Power Reserve mode. This mode engages when the battery drops to 10 percent. Apple has suggested turning off the power-saving mode to prevent this from happening, but that may not help.
The Register reported that the problem affects watchOS 7.2 and 7.3 users. The Apple Watch Series 6 seems to be unaffected. Users have been told to try charging their watches for 30 minutes when they become unusable. If they do not reactivate after that time, owners should contact Apple support to begin the mail-in process to repair their bricked devices.