Yep.....You could just run 6, 12 volt cart batteries and you would have your 72 volts. On E-Z's cart....he could run just 4, 12 volt cart batteries and get his 48 volts. I am no expert but I think that would work unless there is a advantage using a larger number of batteries in 8 volt...only thing I can think of is maybe you would have more reserve amp hrs that way which would mean a longer run time.