Traxxas 2917 Dual Charging Adapter for 2S LiPO Batteries The number one selling name ins RTR Innovative design and engineering Made using only the highest quality components Use Traxxas stock and hop-up replacement parts to get the most out of you Traxxas RTR vehicles This product is made from high quality materials and designed for lasting performance Allows two 2-cell (7.4V) batteries to be charged simultaneously with full balancing capability