Venom 20C 2S 2000mAh 7.4V LiPo Battery with Universal Plug (EC3/Deans/Traxxas/Tamiya) x4 Packs Battery Type: Lithium Polymer (LiPo) Battery Capacity: 2000mAh C Rate and Maximum Continuous Discharge (Amps): 20C (40A) Plug Type: Venom UNI Plug. Compatible with Traxxas Plug, Tamiya Plug, Deans Plug & EC3 Plug. Proven US Support and Lifetime Battery Replacement Plan.