Amazon.com: Venom Drive Series 20C 2S 5000mAh 7.4V Hard Case LiPo Battery - Includes 12 AWG Soft Silicone Wire Connector, Universal Plug & Adapter System Compatible with Deans, Traxxas, and EC3 Plug
2) NEW Traxxas 2S 7.4V 2200mAh 25C LiPo Battery 1/16 E-Revo Slash 4X4 VXL 2820X – Mari Mari