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I was wondering if, with a diode circuit and large enough capacitor and maybe an LED to turn on once capacitor is charged ran after a 5V 1A or 2A USB output that has 200000mAh capacity battery source, I could make a 12-14V output to use as an emergency car battery starter with the car battery that is clamped in parallel? If not, how would you make such a device? Was thinking of another back-up emergency use for the 200000mAh solar power battery bank: http://www.ebay.com/itm/200000mAh-Solar-Power-Bank...Thanks in advance and awesome instructable!
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