I've been using the trickle charger or wall wart (whatever you call them) for years
This is a common misconception, but the standard "wall wart" is NOT a trickle charger!
A standard charger, or wall wart, is a C10 charger, which means it charges the pack at around 1/10th of it's capacity. (600 maH will be charged at 60 ma's.) A "trickle" charger charges at more like C100, and is therefore NOT capable of charging a battery pack, only maintaining a pack that's already charged.
Jim,
You definitely will need to get a standard wall charger if you didn't get one with the Tx and Rx. (??)
Dennis-