HOBBYTIGER 3S 6400mAh 11.1V 6C LiPO Battery for Yuneec Q500 Q500+ Q500 4K Typhoon G RC Quadcopter Solved the swollen problem (puffed up) of original battery after several cycles' flying. After 500 cycles of 1C charge and 1C discharge, there is still 80% capacity retention. Battery Type: Lithium Polymer (LiPO);Battery Volts:11.1V,71.04WH Weight:13.93 oz (395g).Dimensions: 178.5 x 52 x 33.7 mm / 7.03 x 2.05 x 1.33 inch. Package include:1 X Q500 battery.