Schumacher SL1314 12v 600 Peak Amps Compact Battery Jump Start

I could not start my SC400s dead battery (radio ran it down) with #4 jumper cables off a running minivan. Towed it home, charged the battery all night and it started right up the next day. We used to jump start our work trucks on a "power wheels" 12V8AH battery out of a FiOS power supply. Just let them set on the battery for about 10 minutes and if your lucky itll kick over with fuel in the carb or EFI. That power pack is amazing. I think LiPo batteries have the edge as they can really belt out their power quickly in very high amp situations. Lead acid, not so much?