Jumper cables...
Neuner
Old Time Jeeper
I have a set of heavy 15 foot cables that will hold a welding electrode if need, the battery has more that enough amperage to burn a 3/16 arc rod for crude but effective trail repairs. Or even just fixing something around the place.
You do this with one battery? I was wanting to get something set up but I thought you had to have two batteries to get enough.