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Pee-Powered Portable Battery

Contrary to popular belief, you now can recharge a battery by urinating on it. The MetalCell, a unique and portable backup battery that charges from sodium, was designed by South Korean researchers in a bid to replenish electronics when in warfare.

Apparently the sodium in salt reacts with the magnesium plates and generates a dose of low-voltage power that’s enough to charge a laptop for up to four hours one single recharge of saltwater. At a cost of $200, I know what I will be packing on my next road trip or camping adventure.

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