I’m looking at these and can see the biggest issue as being the waiting around for them to charge when you’re trying a long journey. Maybe if we can look slightly outside the envelope and not recharge the batteries but dump and change them at at a fuel station with recharged ones. You shouldn’t have to loose the whole battery stock but have an elecky supply made up of multiple fuel cells / batteries and you just change as many as you need or want, a bit like you don’t have to fill up every time you go for petrol. Sort of like cylinders of batteries a bit like bullets in a hand gun, thinking Colt 45 type of thing.
Ozziedog,,,,,,,,,,thinking out loud again :mrgreen: