Are we ready for pee power?
NoPoPo Batteries are powered by squirting liquid into the cell. It seems they can run on nearly any type of liquid (beer, juice, saliva, etc.) but, incredibly, urine made the list too.
They can last (turned on) for 20 hours at a time and have a shelf-life (turned off) of about 10 years, which is much longer than standard batteries.
NoPoPo stands for "non-pollution power" and the batteries back that up by containing no harmful chemicals, such as mercury or lead.
I can only imagine the awkwardness and hilarity that would ensue by trying to pee into a battery! Hahahahahha!
view katie's profile
Well, this is probably a zinc/manganese/carbon battery without the ammonium chloride. Zinc is still zinc, and manganese is a metal too; the ammonium chloride and water do not harm the environment much. Besides, it is not the parts that gets used up.
Like with the 'stick a copper and an iron nail in a lemon' battery, the energy does not come from the squishy bits, but from the metals used.
view Jute Zak's profile