For me, an hour of runtime would do (once the battery was 4 years old).
For it to be a commercial success, I think you’d have to be able to run 5 hours in a day (but not all at once and battery swapping/charging on the truck from 12V would be okay).
For it to be a commercial success, I think you’d have to be able to run 5 hours in a day (but not all at once and battery swapping/charging on the truck from 12V would be okay).