Indoors I power my triton with a 9.5 amp AT type power supply which works fine for my tx/rx and other batteries. However, when I am trying to fast charge a six cell 7.2 v type pack (for a rc car) I keep getting a "error - input voltage" message for anything over 2.3 amps.

With my car battery, I can charge the same packs up to the max 5 amps with no problem. The AT power supply delivers around 11.5 volts - well with the recommended range of between 10.5 and 15.0 v.

Anyone have any ideas why this happens?
Bill