4 In 1 Balance Manager Battery Charger For DJI Mavic Air RC Quadcopter Spare Parts Description: The battery housekeeper works with the Mavic Air power adapter to expand the charging interface into multiple units. Up to four Mavic Air intelligent flying batteries can be connected & charged in order from the highest to the lowest remaining battery power. Tip: The Battery Charging Hub does not include a charger. Please use it together with a standard charger. Compatible Battery Charger: Mavic Air Power Adapter Mavic Air Car Charger Compatible Battery Model: PB1-2375 m Ah-11.55 V Intelligent Flight Battery Working environment temperature: 5C to 40 C Charging time* (Four batteries):3 hr 30 min 60 to 104 F (16to 40C)6 hr 20 min 41 to 59 F (5to 15C) Input: 13.05 V, 0-5 A (MAX) Input: 13.05 V*4 Product weight: 117.3 g NOTE: Charging times were tested in a lab environment & should be taken as reference only. Package Included:1* Battery Charging Hub (Batteries not included)