This is the Traxxas LiPo 2/3 Cell Balance AC Charger. The Traxxas 2/3-Cell LiPo Balance Charger allows for simple, convenient charging of Traxxas Power Cell LiPo packs. Just plug the charger into an AC outlet, plug your Power Cell LiPo battery pack’s balance plug into the charger, and charging begins with no settings or programming required. Each cell is charged individually for a perfectly balanced charge, guaranteeing maximum performance, run time, and cycle life. The status LEDs confirm how many cells are charging, and let you know when charging is complete. The charger’s fixed 800mAh output makes it an ideal, inexpensive solution for charging Traxxas’ 1400mAh (#2823) and 2200mAh (#2820) Power Cell LiPo batteries. Plug several into a power strip and these chargers are very convenient for charging higher-capacity LiPo packs when fast charging is not required. Not for use with NiMH batteries.