The Metalcell Portable Battery is a unique backup battery that is designed for warfare when little resources are provided. The backup battery is perfect for a weekend camping excursion as it uses anything salty to charge -- including pee.
The battery's innards are magnesium plates which react with the salt content of pee or salt water creating electric volts allowing you to even charge your laptop with one salt water intake. The Metalcell Portable Battery is ideal for excursions of any kind, or even at home if peeing into a battery is your thing.
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