Battery Charging Hub. Features: The Mavic Intelligent Flight Battery Charging Hub is designed for use with the Mavic Intelligent Flight Battery. When used with the Mavic Battery Charger, it can charge up to four Intelligent Flight Batteries. The Intelligent Flight Batteries will be charged in sequence according to their power levels, from high to low. Battery Charging Hub does not include a charger. Compatible Battery Model: FB1-3830mAh-11.4V. Charge Time (Four Batteries): 4hr 10min (Mavic Charger) and 3hr 15min (Mavic Car Charger).