Venom 25C 2S 4100mAh 7.4V Hard Case LiPo Battery with Universal Plug (EC3/Deans/Traxxas/Tamiya) x2 Packs Battery Type: Lithium Polymer (LiPo) Battery Capacity: 4100mAh C Rate and Maximum Continuous Discharge (Amps): 25C (103A) Plug Type: Venom UNI Plug. Compatible with Traxxas Plug, Tamiya Plug, Deans Plug & EC3 Plug.