What tools/parts to keep in the truck?

Honestly, I wouldn't go any lower. I used it all the time in wireline to start dead wireline trucks in Winter. It would start them, but not much room if you know what I mean. And that's "South Texas" Winter. If you had a dead truck up North, I'm not sure if it would get the job done or not, to be honest. But it's about the size of a shoe box, so it's pretty amazing what it can manage. And these trucks were DEAD dead. Hands would constantly turn the truck off, and go past "off", and all the way to accessory. So they would sit there for a week or whatever with the heater blower running full blast. So you can imagine how dead they were.

 

Hrumph, trying to cheap out and save 100$ i still have an inkling that the 2k would do the trick in 99.9999 % of my use case, but that ONE time it didnt, id be pretty angry at myself

 

It really might. Say the truck is too dead to start, but not completely smoked dead. But you're right. That one time...

I've had mine for four or five years now I think. They are pricey, but the convenience and peace of mind can't be beat. Well I guess a battery that isn't dead in the first place would beat it....