Nope, I don't think that will work. The upper voltage is set by by the transformer installed for the nominal voltage. You can probably increase the voltage by 10% or a bit more, but you cannot take a 24 volt unit and crank it up to 80 volts. You can however, turn one down to any voltage you like (assuming you have the range in the control pots), but you won't recover the amperage of the lower voltage units.
In other words, there are models for each major voltage (24, 48, 72 and 96 I think), and you need to keep mostly to those voltages. The charge curve is micro controlled, and adjustable within the limits of the V and I pots.
In other words, there are models for each major voltage (24, 48, 72 and 96 I think), and you need to keep mostly to those voltages. The charge curve is micro controlled, and adjustable within the limits of the V and I pots.