The new CellPro 4S will charge all chemistries. The thing I love the most, is it charges directly through the balancing connectors. No need to ALSO attach wires to the output leads.

Using a JR to CellPro converter cable, you can use a standard JR servo extension to make the charging/balancing leads as long as you want. It also charged the batteries faster than the ThunderPower charger.

I have used just about every charger out for A123's, in fact I know Charley, the owner of TP personally; but head to head, dollar for dollar, the CellPro is the best charger for the money.