GoolRC 2Pcs Upgrade High Power 3.7V 600mAh Lipo Battery for SYMA X5C X5C-1 X5 JJRC H5C RC Quadcopter High quality and durable perfermace. 3.7V 600mAh lipo battery. Just need approximate 40mins charging time. Compatible with SYMA X5 X5C JJRC H5C RC Quadcopter.