chubhill,


1. no doubt you are right, but you need to go by the cell amps per positive plates & the total kwh rating of the battery. Going by the tray size does not give you an apples to apples comparison. See tray sizes are for the most part common in height today (in the 60's this was not true) which means the battery cells are common in height. Battery manufactures can & do vary the height of the cell plates (changing the amount of plate surface) that go into to cell "can" to produce various amp/positive plate & greater kwh - sorta like engines in a car use the same engine block play with the head design, camshaft, cylinder bore, etc & create higher horsepower (which is equivalent to a kwh rating). The greater the horse power the greater the cost (sell price) of the engine - you pay for more power.

2. 48 volts have a lower amph/hr rating, great less heat (resistance) so the dual voltage motors can turn faster (~33% faster). Heat is an enemy of a motor & electronic devise - less brush wear, less contactor tip wear. If your 48v units are moving more loads by being faster per battery charge than the 36v - then they are more productive & costs you company less per load moved. That is a good thing - check it out at your end.