The 2997 completer pack is the perfect complement to your 8s equipped X-Maxx^® or XRT^™. The pack includes two 4-cell 6700 mAh iD^®-equipped LiPo battery packs for tire-scorching 30+ volt power. Traxxas iD batteries are the easiest and safest Lipo charging solution when used with our exclusive iD chargers. You just plug in your iD battery and press start. The iD charger handles all the settings and quickly gives you an optimized charge every time. The new 4s capable EZ-Peak^® Live Dual multi chemistry charger comes equipped with built-in Bluetooth to work with the new EZ-Peak Live^™ app for iOS and Android. The app gives you detailed information and advanced operation through a high-definition color interface. It’s our finest charger in the popular EZ-Peak iD lineup.