Up to 22 Hours of Battery Life
No. This is for ONLY video playback in the AppleTV app at 1080p with no internet connection and no other apps or widgets being used. No web browsing or streaming or podcasts, or any internet connected activity at all.
"Testing conducted by Apple in September and October 2023 using preproduction 16-inch MacBook Pro systems with Apple M3 Pro, 12-core CPU, 18-core GPU, 36GB of RAM and 512GB SSD. The wireless web test measures battery life by wirelessly browsing 25 popular websites with display brightness set to eight clicks from bottom. The Apple TV app movie playback test measures battery life by playing back 1080p HD content with display brightness set to eight clicks from bottom. Battery life varies by use and configuration; see
apple.com/au/batteries for more information."
If you're doing anything remotely productive, or pump the screen brightness up, you're going to be getting 8-10 hours battery life.