Traxxas takes battery power to the next level with new 4-cell LiPo battery. The 6700mAh capacity and 50C burst discharge rate deliver the power, performance, and runtime worthy of the X-Maxx. Checking in at over 30-volts in 8s configuration, Traxxas 4-cell LiPos will stand X-Maxx on its wheelie bar and have it catching massive air as fast as you can grab the throttle. Traxxas’ exclusive iD^® battery system is the easier and safer way to charge your Traxxas batteries. Only Traxxas gives you more of what you want most: simple installation, a great price, and the most speed and run time available.