The DJI RSBA1 Ronin-S Battery Adapter is an add-on accessory for the DJI Ronin-S gimbal and Ronin-S BG37 Battery Grip that allows the battery grip to be charged independently of the Ronin-S gimbal head. The USB Type-C input works with 5V, 2A and 12V, 2A chargers and a USB Type-A port provides 5V, 2A of power output for charging mobile devices and accessories.