The Traxxas 2984 charger/battery completer pack contains a powerful #2926x 8.4V 3000Mah NiMH hump pack battery and a #2969 2-amp AC wall charger. The AC 2-amp NiMH fast charger uses a wall outlet to charge your 5-7 Cell (6 - 8.4V) NiMH batteries quickly and efficiently. The powerful 2-amp output makes quick work of charging and a status LED informs you when your charging is complete. The 2969 charger is for NiMH batteries only and should never be used to charge lipo batteries.