Floureon 2Packs 4S 14.8V 5500mAh 40C Lipo Battery for 8th Scale Buggy RC Quadcopter Airplane Helicopter Car Monster Truck Boat Hobby (Deans T Plug) Chemistry: Li-Polymer; Cells Number: 4S ; Voltage:14.8V ; Capacity: 5500mAh Discharge Rate: 40C ; Charge Plug: JST-XH ; Dimension:5.66*1.95*1.44 inch; Weight:19.6oz Compatible: for 8th Scale Buggy 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.