Re: Vintage alternative to lead acid batteries
Yes, NiFe cells: apart from milk-floats the other place they were commonplace was in electric fork-lift-trucks. A place I used to visit sometimes had a fleet of these, a battery-charge only lasted half a day but they had twice as many batteries as trucks and a neat mechanism for swapping batteries during the drivers' lunch-breaks: the batteries were fitted in a sort of pallet. Cunning thing was, it used another fork-lift-truck to take the old battery out and slot the new one in! Time to swap batteries was a couple of minutes per truck.
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