The Insta360 ONE R Fast Charge Hub charges both the Standard and Boosted ONE R Battery Bases, at about twice the speed than usual, in a smart sequence based on battery levels. The Standard Battery Base attaches to one side and the Boosted Battery Base to the other in a compact, efficient setup. The Fast Charge Hub plugs into any 2A or higher USB power outlet via its USB Type-C charging port. A compatible USB cable is sold separately.