Looking to get a small lithium jump pack to keep in the golf cart for emergency starting purposes. There are a lot of options out there, does anyone have any feedback on ones they’ve used to start a race car?

I wish I could remember the ones we used back at the shop I worked in Denver, Co. We used them on the trucks. Batteries could be stone cold dead, hook it up, hit the key, damned thing would spin like it was connected to 220!!! It was a high capacity jump box, 12v. About the of two packs of paper put together. I think it weighed about 10lbs or so....we could start 8-10 trucks before the charge indicator would drop too....But I know they weren't cheap, about $600 a pop...

A mechanic who works for me has a Matco brand, on the typical dead battery service call, it will fire them right up.

Might give you an overview.