wow
one thing i can think of us your hub is stripped
jack up cart put on jack stands
remove both tires and hubs
good time to do break job
see if hub splines are worn
have some one hold passenger side axle (lightly)
you hold drivers side (lightly)
and someone presses the go pedal
one of you will feel axle turn
if not it is in the gear box
more that likely the hubs are bad
as for reapply discharge of batteries
that is sign of bad batteries