Der mit Urin aufladbare, tragbare Akku wird nicht nur in der Mobilfunkwelt seine, ähm, Duftmarke setzen:
"South Korean battery makers have created the MetalCell, a magnesium battery based on 2,000-year-old technology that can be charged with saltwater or, barring that, urine [...] Fitted with magnesium plates inside, the MetalCell can be charged up with nothing more than the addition of saltwater. The sodium in the salt reacts with the magnesium to create a dose of low-voltage power that can power up laptop, a flashlight, night vision specs, etc. when no other source is available. The output can keep a laptop humming for more than four hours and can be recharged with fresh saltwater until the magnesium begins to deteriorate. POPSCI: A Portable Battery That Runs on Saltwater – or Urine"
