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NoPoPo battery - just add urine

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Published: Saturday 1st September, 2007 | Author: Tarinder Sandhu
Companies: Nopopo (All Nopopo content)

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Award for the most innovative product at IFA 2007 should already by hung around the neck of Aqua Power System.



Dipped in a plastic cup full of water is a NoPoPo (Non Pollution Power) battery that works on water!



NoPoPo batteries work by adding a few drops of water - or any liquid for that matter, you can even use urine, according the literature - into a patented, self-sealing battery. Inside, a mix of carbon and magnesium react with the liquid and produces power - said to be around 500mAh in the case of an AA-size battery. What's more, the eager representative was keen to state, extra power can be added by refilling the battery; just open the trouser zip and let fly!

Already on sale in Japan and with an estimated shelf-life of 10 years, a pack of two AA batteries costs around a fiver. Worth it for the novelty value if nothing else?

HEXUS.community :: your right2reply

Re: NoPoPo battery - just add urine.
Posted by Andaho - Sun 2nd Sep 2007, 11:11am
Anyone know more info about these? Are they just a useless novelty or are they actually practical? The questions I want answered are: How long does it take to charge them? How many times can they be recharged? Can they be disposed of in general rubbish? (as normal batteries are mean to be disposed of specially), How can they be bought? (there's not even any hong kong sellers selling them on ebay)

Even searching on google brings up this page first! - These must just be a stupid usless novelty or else there would be more publicity for it?!?!?!Quote
Re: NoPoPo battery - just add urine.
Posted by ChemProf(retd) - Thu 10th Jul 2008, 7:22pm
This is over hyped and the explanation is poor science. The energy comes not from the water (or other water based liquid) but from the magnesium metal in the battery, which will oxidise as the battery is used, until it runs out. You cannot get energy from water, it's the lowest energy state of any combination of hydrogen and oxygen. At 500 mAh the total energy available is only a fifth of what a good NiMH rechargable will store, and this can be recharged up to 50 times. It looks like a very expensive way of running your MP3 player!

The only use I can see is as an emergency energy source - but you'll need a lot of them, they'll run out quickly.

(retired Chemistry Professor.)Quote
Re: NoPoPo battery - just add urine.
Posted by GoNz0 - Thu 10th Jul 2008, 7:35pm
welcome to the forums chemprof :)

an interesting 1st post :DQuote
Re: NoPoPo battery - just add urine.
Posted by moby_matt - Thu 10th Jul 2008, 7:49pm
Second that!Quote
Re: NoPoPo battery - just add urine.
Posted by BEANFro Elite - Sat 12th Jul 2008, 12:27am
He just sounds mighty pissed of to me :)


(Oops...I got here late...)Quote

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