Intelligent Flight Battery. Features: Recommend purchasing in pairs. Each pair provides Max 25-minute flight time with the Zenmuse X5S, 27-minute flight time with the Zenmuse X4S. Inspire 2 battery uses higher performance and a higher density battery cell with an overall larger capacity as well as an updated management unit. Its performance in low temperature environments has been optimized with a built-in 70W self-heating system capable of heating itself to 41°F (5°C) every minute. This self-heating function can be enabled either automatically or manually. The management unit constantly monitors battery status, making all information, including battery level and battery temperature, easily visible in DJI GO. Capacity: 4280 mAh. Voltage: 22.8 V. Battery Type: LiPo 6S. Energy: 97.58 Wh. Net Weight: 515g.