For a moving vehicle, there is a big weight reduction switching from lead acid to lithium batteries, and a total elimination of battery maintenance. For a forklift, or many tractor applications that may not be a win, but for other uses, it is.
I could easily get by with an electric tractor. I almost never run WOT for four, much less eight hours. Combining corn or soybeans, or racing against weather for hay is a whole different story. Different strokes for different folks.
A friend who was an early, early electric vehicle inventor and successful EV racer, holding several world records, worked out how to get an 80% charge in 20 minutes. The down side s that you basically have to be at a substation (500V at 3-400A). Could you do a combine like that? Yes, but there would be a nonzero infrastructure investment.
All the best,
Peter