>>charles has 30 or 40
Well, :) , atleast 6 of them.
I love them. Glen Gold is right on the money on how I use them. First thing I do on a dry camping
trip is disconnect the trailer house battery and wire in a Jump-It via a torpedo plug to provide primary power.
Remember, we do most of our camping "dry" and are real minimalists, so our needs are minimal.
We can get 2 or 3 days use (water pump, a couple of heater cycles, stove exhaust fan) outta each jump it.
I usually carry 3 or 4, depending on the length of dry camping
... and usually leave most 10 day dry campouts with a totally charged house battery.
Yes Ches, they recharge in the car, via torpedo plug, but not all that efficiently. We usually schedule a day or two at a full service campground between dry camps ... and recharge the Jump-its with electricity. Full service also allows us to do laundry, etc.
For example, we're spending 6 weeks in Colorado from late May till Mid July. 30 days will be spent in three mountain top remote National Forest campgrounds, with scheduled full service nights between each dry camp. 10 days dry, 5 full service, 10 days dry, 2 full service, 10 days dry then three nights headed home with service.
I'll recharge the Jump-its at each stop.
I did, however, just purchase another Jump-it, with a built in air compressor ... because there is a good chance we might encounter a below-freezing spell for a couple of days, because of the altitude, particularly in late May ... so this Jump-it Air Compressor will be reserved for emergency winterization tasks.