SYMA Upgraded X5C X5 3.7V 600mAh 25C Lipo Battery Feature: Upgrade to 600mAh, longer flight. Suitable for Syma X5C X5 quadcopter Specification: 3.7V 600mAh 25C Lipo battery; Charging Time : About 30 min; Dimension: 8.5 x 25 x 40mm