I have a client in the USA who needs to get an 18.5 volt (5s) battery pack made up for an Engineering Museum project. Aristocraft E8 and 5 passenger cars. So it will need seriously big capacity.
I can supply battery packs from Australia but they are expensive to buy and expensive to ship.
Would some kind soul in the the USA steer him to a reliable battery source please. Pack must have pcb protection.