Featuring a large 2200mAh capacity, these lithium polymer batteries are engineered to unlock true on-demand power and speed. It will increase radio-controlled vehicles running times during long operation. Weighing only 4.2 ounces, the battery is light enough to be practical, but powerful enough to provide plenty of performance. The battery uses a wide-surface gold-plated copper terminal to connect with the vehicle, resulting in almost no voltage loss. This 7.4-volt lithium polymer battery is compatible with specific Traxxas model vehicles.