[Joseph F]

we had 2 charges and 4 batteries (this years and last) and we always had 1 full battery on the robot, 1-2 charging, and 1 ready to go. Alot of times last years charge would finish its battery, so we'd put it to our other charging bat and take this years charger and put it on whatever battery was going to be used next, just to make sure it stayed full. Unless your robot is a real power eater 2-3 chargers and 4-5 batteries should be more than enough. Though i agree, this years charger doesn't have the speed needed on its own... Although, isnt there a little red switch on the back that changes it from 1amp to 2amps? i thought i had noticed somethin like that.