Bought the smart charger for my Javelin Gun Works 9.6V 1200mAh Nunchuck Battery, due to my "dumb" charger having a tendency to over heat my batteries to unsafe levels.
Works like a charm, and well worth the buy, I couldn't ask for more at that price.
Charges 9.6v 1200 MAH like a charm.
Keeps batteries charged with a "trickle" flow.
Nice long chord.
Batteries get warm but never hot.
Charged my batteries well ahead of time for a great day of airsoft.
None that I've found so far, but I have only used them on a 9.6v 1200 MAH battery as well.
Rating: [5 of 5 Stars!]