Intelligent Three-Battery Charging. The DJI Two-Way Charging Hub for Mini 4 / Mini 3 & 4 Pro lets you sequentially charge up to three Mini 3 Pro, Mini 4, and Mini 4 Pro Intelligent Flight Batteries, starting with the one that has the most remaining power. This hub is compatible with the DJI Intelligent Flight Battery for Mini 3 / 4 and DJI Intelligent Flight Battery for Mini 4 Pro.

Rapid Charging. This hub optimizes charging for maximum efficiency. It fully charges one Intelligent Flight Battery in about 56 minutes, and charges three of them in roughly 3 hours. It charges one Intelligent Flight Battery Plus in approximately 78 minutes, and three of them in just under 4 hours. Status LEDs on the side of the hub indicate each battery’s level, charging speed, and charging status.

Doubles as a Power Bank. When the hub has Intelligent Flight Batteries inserted and isn’t plugged into the wall, you can use the batteries as a series of power banks to recharge your mobile device. When you’re charging a mobile device, the hub discharges the battery with the least power first so that you’re not giving up a fuller battery that would be of more use in your Mini 3 Pro.