Not really worth it. A ballpark calculation - ignoring any infrastructure and time for charging/offloading, assuming you get the batteries and the electricity

Not really worth it. A ballpark calculation - ignoring any infrastructure and time for charging/offloading, assuming you get the batteries and the electricity for free, using Tesla batteries as an example, a MWh of them would weigh more than 6 tons; so freight truck can carry at most 2-3 MWh worth of batteries (density is likely to be an issue) and the sale price of that truck full of electricity even at the current outrageous prices is just 1000 eur, perhaps 2000 if you drive all the way across Europe. Shipping cargo on such trucks costs something like 1.5 eur/km nowadays (we don't have cheap self-driving electric trucks yet..) so if you'd have to drive more than a few hundred km (and you have to drive the batteries back!), you'd be better off using these trucks to ship something else than electricity.