Specific Parameters: Dimensions: 2.12*1.45*0.74inch/54*37*18.5mm; Weight: 74g/2.6oz; Capacity: 1200mAh; Volt: 7.4V. Plug: SM-5P. Discharge Rate: 15C. Wide Application: VICMILE 2000mAh 7.4V li-ion batteries compatible with R208&R308 RC Boats Remote Control High Speed Boat Model (Only if the voltage, dimension and the plug match, then it will fit). Super Safe: Our high technology enables quick & constant charging at any time, and no cell memory effect so that you do not need to full discharge before recharging. Long cycle life: All of our RC batteries are available use at anytime. The uniquely designed will recycle at least 300 times. What You Get: 2 x VICMILE 1200mAh Li-ion Batteries, 2 x 7.4V USB Battery Charger. VICMILE R208 R308 Battery 7.4V 1200mah High Capacity Li-ion Battery 2S 15C Rechargeable with SM5P Plug Fit for High Speed Remote Control Boats 2Pack with USB Chargers