Specific Parameters: Dimensions: 50*14.2mm/ 1.97*0.56inch; Weight: 32g(per unit); Capacity: Real 1000mAh; Voltage: 3.7V; Plug: SM-2P. Wide Applications: Designed with an SM-2P plug for remote control cars like E35, DE38, DE40, DE55, TB202, and TM141 (Only if the voltage, dimension and the plug match, then it will fit). Complete & Ready-to-Use Kit: Includes 2 rechargeable batteries and 2 USB chargers for immediate use and convenient charging anywhere. Safe & Reliable Charging: Built-in protection circuit prevents over-charging and short-circuiting for complete peace of mind. Rechargeable & Eco-Friendly: Supports hundreds of charge cycles, providing superior value and reducing waste versus disposable batteries. Designed to fit a wide range of small RC vehicles, including DEERC DE70, BEZGAR TD141, 4DRC C3, and Sharkool models. Compatible with 1/16 scale RC cars, amphibious RC stunt cars, and small sensor-controlled stunt cars.