2 Pack 7.4V 500mAh H8C-10 Lithium Battery for JJRC H8C RC Quadcopter Spare Part Silver 7.4V 500mAh Lithium Battery for JJRC H8C RC Quadcopter High quality and rechargeable performance High capacity 7.4V 500mAh and long life span, Lightweight, durable, practical and convenient to use Fast charge and discharge rate for your requirements It is a great battery set to power your RC helicopter