Yeah, it looks like the "jump boxes" are the way to go. It seems like the reviews on the various ones aren't that great, but since I don't plan on actually jump starting a car...nor inflating a tire... nor using it as a reading light....nor running a coffeemaker.... I will probably be fine.
I still wish (and can't seem to find) a simple "portable power" device that DOESN'T have the jumper cables and inflator and stuff. Just a deep-cycle mid-sized battery with a built in inverter, charger and handle to carry it around.
I love Amazon for reviews, but there's never a good way to drill down to some specific product or category.
