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. Specifications: Type: LiPo Total Capacity: 5000mAh Voltage: 11.1V C Rating: 25 Length: 135mm Height: 28.5mm Width: 44mm Weight: 12.5oz CHARGING NOTE: This battery can only be safely charged with a Traxxas iD Battery Charger. NEVER, UNDER ANY CIRCUMSTANCES, charge this battery using a non Traxxas iD Battery Charger.