with this   77   we are haveing problems  with it beeing  so   Hard to push- like the brakes are on but they dont seam  to be.

also  that 8v..   on  the one charger it  gets up and  GOES  but  on the  big booster  charger  it   still  grunts and growns   like its dead   but  I saw the  ground and  -  cables were  the size fo a  #3 pencil       from school I  know that to get that many amps to  go you need  a  pipe biggenough for  them   electrons to flow threw---    so I know it needs help there.