TRAXXAS 5000mAh 11.1V 2-cell 25C LIPO with iD connector Traxxas-certified, iD®-equipped LiPo batteries provide the power needed to achieve the top speeds Traxxas models are built for. Traxxas' exclusive iD battery system is the easier, safer way to charge your Traxxas batteries. Only Traxxas gives you more of what you want most: easy installation, a great price, and the highest speed and runtime available.