This GB150 is exactly what I have been waiting years for it to come out. It's even lighter than my 400 amp unit that I used to use, and start my APU, which then after a minute or so, with the APU running I could start the truck. Now I can start my truck quicker, with this lighter unit. This will jump start a 4 battery system, that starts a 14 liter Cummins ISX 500. So I believe this will be enough to jump start just about any 12V system. The ISX is in an International 9400i, so freightliner, kenworth, peterbilt, volvo, mack, with any engine, Cummins, Mercedes, Detroit, Cat, Pacar should all start with this system, as long as you don't have a short or open in the system before the starter.
Just one jump start and this thing pays for itself. As even if you're in a truckstop where you just spend several hundred dollars for fuel, they will charge you to jump start your truck, ...when they get around to it.