The Traxxas 2849X 4000 mAh 11.1 volt 3-cell LiPo battery is a high-performance rechargeable battery designed to provide powerful acceleration and extended run times for your RC vehicle. With a 4000 mAh capacity and 3-cell 11.1-volt configuration, it delivers consistent voltage for peak performance during racing, bashing, or trail driving. Built with Traxxas quality and equipped with the High-Current connector, this LiPo battery ensures efficient power delivery and reliable operation. It is compatible with Traxxas models that support 3-cell 11.1-volt LiPo batteries, including the Slash, Rustler, Stampede, Bandit, and X-Maxx, making it an excellent upgrade or replacement for high-speed performance driving.