During the Rally this lil guy would have been useful. In use this unit at work. I can jump multiple vehicle's with it and pulls about 7% per jump. Diesels with dual batterys are a Lil tricky. I usually get away with jumping the battery that goes juices the battery. Come for ports to charge phones and other devices.
I have ran the smaller units, not sure the designation but it's the small gloss black red, you see them all over. I went through 3 of those due to poor quality clamps and a unknown issue .
So far these have been worth every penny and wish I didn't leave em my toolbox