1. Battery charging manager can be used with charger to expand to 3 battery charging ports, charging the connected batteries in turn, eliminating the need to plug and unplug batteries one by one 2. Operating ambient temperature: 5 - 40 degrees Celsius 3. Input: 25.2V 3.57A 4. Charging time: about 55 minutes (single battery) 5. Adaptable products: For DJI FPV intelligent flight battery/power adapter/vehicle charger 6. Packing list: DJI FPV charge manager x 1