Noiposi 2PCS 7.4v 2100mah 25c Li-po Battery With 2 In 1 Balance Charger for Syma X8C X8W Venture RC Quadcopter Spare Part Suitable for:Syma X8C X8W X8G X8HW X8HC RC Quadcopter Product size:82*34*18mm/3.35*1.34*0.71in Plug type:banana plug(round plug) Charging time:3.5-5.5hours,Green light is blinking when charging,light on when charge complete Warranty: 6 Month Warranty. We provide friendly after-sale service and no risk refund for our customers. If you have any issue,please contact us and we will try out best to slove your issue!