Although I recommend the EVextend kit, before I got that kit, I was able to pull a total of up to 480 watts continuous from the 12v outlets in the car..... I believe the maximum without tripping the fuse is 240 watts for each outlet.
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Has anyone used this Volt power kit? How many gallons in 24 hours should one expect to use if they were pulling a continuous 1,000 watts?
http://www.evextend.com/EVEX-1000W.pdf
Thanks,
MrEnergyCzar