Duratrax LiPo Onyx 3S 11.1V 6400mAh 35C Soft Case Traxxas FEATURES: Ideal for 1/10 scale car applications Prewired with Traxxas high current connector INCLUDES: 11.1V 6400mAh 37C Soft Case LiPo Battery with Traxxas High Current Connector REQUIRES: Balancer and LiPo compatible charger or LiPo charger with built-in balancer such as the Onyx 235, DTXP4235