I said one battery because our trucks ( Smith Electric ) were five ton rated delivery trucks, each truck had 48 batteries, 24 per pod, and each battery had 96 cells in each one. They are sized like a big pickup or HD truck battery and very heavy. Cost wise, $90,000 was just for the batteries when the trucks were new. Fully loaded, they had 60 mile ranges with top speed of 55 on level ground. Not the best thats for sure.

Stripping a working EV to adapt to your truck is neat idea, helps keep them on road and cut down on pollution, ( not counting the generation of electricity which is another whole can of worms ).

joe