Traxxas takes battery power to the next level with new 4-cell LiPo battery. The 6700 mAh 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 for RC vehicles 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.