DURATRAX LiPo Onyx 3S 11.1V 1300mAh 35C Soft Case Traxxas DTXC1931 This is the DuraTrax Onyx 11.1V 1300mAh 35C Soft Case LiPo Battery with a Traxxas Connector included.Features: Prewired with Traxxas connectorIdeal for 1/16 scale car applicationsIncludes: One DuraTrax 11.1V 1300mAh 35C Soft Case LiPo Battery with a Traxxas ConnectorRequires: Balancer and LiPo compatible charger or LiPo charger with built-in balancer such as the Onyx 235 (DTXP4235)LiPo charging bag