How Do You Take Your Apple Watch Off Power Reserve. To charge your Apple Watch. If your Apple Watch is currently in Power Reserve mode the following steps should get it working again.

Hold and press the side button until the Apple logo appears. Here are the steps to do that. Power Reserve prompts.
One helpful tip when you approach the lower bounds of battery remaining is to switch into Power Reserve Mode on Apple Watch.
Handle your Apple Watch and accessories safely and always take off your watch before charging it. Once there you should see a Buy Now button in the top right corner as shown in the image below. To kick your Apple Watch out of Power Reserve press and hold the side button. Wait for your Apple Watch to restart.
