A Jackery 1000 is already 20+ lbs and over $1000, and it wouldn't get an EV far. Spare power packs would have to be large and very expensive.
Better idea would be a mobile fast charging truck. Ironically that truck would have to be a diesel to make sure it had the range to support distant stranded vehicles, and not be insanely heavy and expensive itself.
Better idea would be a mobile fast charging truck. Ironically that truck would have to be a diesel to make sure it had the range to support distant stranded vehicles, and not be insanely heavy and expensive itself.