Otterbox has unveiled a new product aimed at the problem of controller drain while gaming on the Xbox Series X, S or One. It consists of the new Power Swap Controller Batteries, along with a charging cradle for the same. The OEM asserts that it is optimally designed to enable one-handed battery reloads without a break in play.
https://www.notebookcheck.net/OtterBox-launches-the-Designed-for-Xbox-Power-Swap-Controller-Battery-set.545114.0.html