You could also look at the 1200amp jump starter from Super Cheap Auto: it's got 2 car charger sockets, a semi-decent LED light, a USB slot on the back, plus you can obviously jump start your car with it. I have one and 4-5 hours on my 8" goto dob is handled easily. Not sure how you'd go powering a laptop off it though, but I think the documentation for it gives you an idea how long you can run certain appliances. You just plug it into a 240v socket to recharge it.
Last edited by gaseous; 15-07-2016 at 01:56 PM.
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