The Two-Way Charging Hub for the DJI Mini 2 can hold up to three flight batteries and it will charge them in sequence starting with the battery that has the most power. This DJI Mini 2 Two-Way Charging Hub support both Quick Charge and USB Power Delivery technologies for charging batteries at up to 29W. This charging hub is only compatible with the Mini 2 Intelligent Flight Battery - Mavic Mini and Mini 3 Pro batteries are not compatible.