It sounds like these are just DC-DC chargers specifically designed for integration with the portable power pack. I'm not familiar with these specifically, but I have integrated DC-DC chargers into multiple vehicles. Typically, the DC-DC charger activates in one of these ways:
It looks at the...
@brewrunner, do you mind measuring the length of the box? I’m currently doing research and plan to buy a 4Runner, and your post is making me wonder if a drawer box I made for a different vehicle would fit.
I've read that the jump start posts are not rated for the kind of current that a winch would pull.
Edit: If we assume a 15 foot run between the winch and the battery (30 feet total), the wires should be 2/0 or 4/0 AWG to sustain 400A.
I'm not sure what the battery-to-frame connection looks...