Traxxas 2857x 6400mAh 11.1V 3-Cell 25C LiPo Traxxas Power Cell iD-Equipped LiPo batteries are engineered specifically to fit Traxxas models and maximize their full performance potential Balance connectors are integrated into the Traxxas High-Current Connector eliminating fragile balance wires and the need for external balance boards Power Cell LiPos are constructed of premium cells with extra-wide discharge tabs to minimize resistance Power Cell LiPo packs feature patented High Current Connectors with 12-gauge Maxx Cable wire soldered directly to the LiPo cells 6400mAh 11.1v 3-Cell 25C LiPo Battery for 1/10 scale vehicles or larger All LiPo batteries require LiPo specific chargers and cannot be used with NiMH-only chargers Traxxas LiPo batteries with iD may be charged on LiPo chargers with separate balance ports by using Traxxas adapter #2938