For DJI Mavic 4 Pro Requires USB-C cable and power adapter Charge up to 3 batteries simultaneously Also works as a 100 W USB-C power bank Quickly charge one or more batteries with the parallel charging hub for Mavic 4 Pro from DJI. This hub requires a USB-C cable and a power adapter (not included). By connecting it to the optional 240 W DJI power adapter, you can fully charge a flight battery for Mavic 4 Pro in just 51 minutes, or use the three slots to charge three flight batteries simultaneously in just 90 minutes. With the batteries inserted, the hub can be used as a USB-C power bank if needed, providing 100 W of power to a smartphone, tablet, or another USB-C compatible device. Additionally, it features a power accumulation function, allowing you to transfer the remaining power from low-charge batteries to the battery with the highest charge level.