I hope this is the right spot but anyway,
I am part of a group doing a gas to electric conversion of a Allis-Chalmers "G" tractor.
There are several design options online but all use some sort of lead-acid deep cycle battery.
Our group is looking to use some sort of lithium-ion or LiFePO4 batteries which are just better.
However, a lot of these type batteries seem to be either for light applications or cars.
The engine we are looking at is something around this:
Does anyone know of a lithium-ion or LiFePO4 battery packs for this range of electric motor?