ZOP Professional LiPo Battery; 1 years warranty and friendly customer service.Quickly Recharged, long cycle life (150 times minimum), up to 200Wh/kg energy densityParameter: Cells : 4S, Capacity:3300mAh, Voltage: 14.8V, discharge rate: 40CDimension , 5.31x1.65x1.06inch, (135 mmx42mmx27mm) , Weight, 340g; Connector: Deans PlugApplications: Specially Designed for Traxxas RC Cars, suitable for Slash VXL, Slash 4x4 VXL, E-Maxx Brushless, E-Revo Brushless and Spartan models.