Jump starter.

Again thanks for the tip, it's actually now $15 cheaper than I paid on Amazon.
I keep mine in my house but if I went on a long trip I would bring probably bring it with my cheaper Harbor Freight..
Don't forget to top yours off yours

 

Done

Friggin thing is heavy for its size!

 

lol! It does weigh a ton and you wouldn't think it as it's kinda flat and on the thin side.