- a box to put everything into it- a little cooler(why? Because the converter gets really hot)- 2 switches- a piece of thin cloth ore else to protect the cooler- a car 12v to 5v converterOne or both of these parts:- a 9v battery holder+ a 9v battery- and/or a 4000mah rechargeable battery with at lea...By: PortablePower
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