so looks like the smoke stayed in.  all new 14x 48v 40Ah lithium cells, and a new charge balancer board.  i couldnt find one that does 250amps, so i put the 50amp board to the charger, and tapped the cuttoff fet gates to the original 250A board to the motor.  way more kick in the pants than i am comfortable on 2  wheels with.  quantya.