GoolRC 2pcs 3.7V 500mAh H5C-11 Li-po Battery for SYMA X5 X5C JJRC H5C RC Quadcopter High quality and durable perfermace. 3.7V 500mAh lipo battery. Light weight and portable to carry. Just need approximate 50mins charging time. Compatible with SYMA X5 X5C JJRC H5C RC Quadcopter.