Floureon 2Packs 4S 14.8V 4500mAh 45C Lipo Battery 5.271.681.44 inch for RC Quadcopter Airplane Helicopter Car Truck Boat Hobby (XT60 Plug) Chemistry: Li-Polymer; Cells Number: 4S ; Voltage:14.8V ; Capacity: 4500mAh Discharge Rate: 45C ; Charge Plug: JST-XH ; Dimension:5.27*1.68*1.44 inch; Weight:17.5oz Compatible: for RC Airplane, RC Helicopter, RC Quadcopter, RC Car, RC Truck, RC Boat, RC Hobby Note: Ready-to-Run, Please select the right connector according to your original battery. All the FLOUREON products sold by SEVESTO comply CE, RoHS, MSDS, UN38.3 Certifications.