I know my shock lighter runs on one AAA battery. They have a copper wire coil which (I think) doubles the voltage every one time it is wrapped around. My lighter has like an inch of coiled wire and that thing is STRONG! I've been hit by a 120V electrical socket before and I'd say that the lighter is worse.
In school, we'd get like 5-10 of my friends and we'd all hold hands and make a complete circuit so when I touched the bottom of the lighter to the kids' hand next to me, we all felt a tingle.
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