TRAXXAS CERTIFIED LIPO POWER! Traxxas Certified iD-Equipped LiPo batteries are engineered to provide the punch and on-demand power for reaching the top speeds that Traxxas models are built to achieve. Traxxas Power Cell iD-Equipped LiPo batteries are engineered specifically to fit Traxxas models and maximize their full performance potential. Only Traxxas gives you more of what you want most: simple installation, a great price, and the most speed and run time available. Type Total Capacity Voltage C Rating Length Height Width Weight LiPo 5000 mAh 7.4 V 25 137 mm 24 mm 43 mm 9.9oz Accessory part for these models: Unlimited Desert Racer