Japanese maker developed battery to be charged by “water”, already sold on Amazon / One package for 415 yen




A Japanese maker, Aqua Power System Japan developed a batter to be charged by “water”.

The “water” can be beer, coffee, soda, even urine. It works only with 0.5 ~ 1ml volume.

The size and the electric power are the same as normal batteries (1.5V). It can be recharged by adding new water.


This is already sold on Amazon.co.jp. The price is 415 JPY for 3 of them in a pack.



You read this now because we’ve been surviving until today.


Français :

Un fabricant japonais a créé des piles “qui marchent à l’eau”, déjà en vente sur Amazon : un jeu de 3 pour 415 yens


Un fabricant japonais, Aqua Power System Japan a conçu une pile qui se charge avec “de l’eau”.
“L’eau” peut même être de la bière, du café, un soda, ou même de l’urine. Elles n’ont besoin que de 0,5 à 1 ml de liquide.
La taille et l’électricité produite sont identiques à celles des pile normales (de 1,5 V). On les recharge en remettant de l’eau.

Ceci est déjà vendu sur Amazon.co.jp. Le prix est de 415 JPY pour un jeu de 3 piles.

Vous pouvez lire ceci parce que nous avons survécu jusqu’à aujourd’hui.

  1. I am often amazed by Japanese electronics engineering.

    NoPoPo as a brand name though (No Popo = No shit). I like it! 🙂

    Shinbashi White Bldg. 5F, 4-3-11, Shinbashi Minatoku, Tokyo, 105-0004, Japan

    What half-cell chemistries are utilized???
    It seems they have an issue with counterfeit cells out there. Caveat Emptor.

    It would be immensly helpful if they had a page dedicated to identifying counterfeit cells. If only they manufactured sub-C cells for cordless power tools (Caution: No user-servicable parts inside).

    NoPoPo – that’s an awesome brand name. It beats Fricken Schnapps by a “PG-rated” mile.

  2. These batteries are marketed as ‘aqua power’ and there are claims online that they are ‘magic’, ‘run off water’ or are ‘powered’ or ‘recharged’ by water. The claims are (of course) bullshit, and a good argument for making high school science compulsory.

    The power is in the battery, not in the water. The cells are initially dry and cannot deliver power until water is added. The batteries have some claim to being environmentally friendly as they do not contain heavy metals. However according to Wikipedia ‘these batteries have failed to make an impact due to their extreme low power output, very short active life-span and high cost’.

    1. They’d even have lower power output in Arctic winter conditions.
      It might be that power output increases with temperature and depending upon substances in the water. Thinking salt water might be a bad idea, though likely higher current. Whatever else it’s function, it seems water is meant to be at least part of the electrolyte.

      Here’s a public datasheet –> http ://www.aps-j.jp/pdf/APN-NPP-E.pdf

      Quote: “Possible to repower 5 to 6 times with adding water. Engineered for devices consumming low current.”

      Can’t seem to find more data then that from the company.

      It’ll have a niche or more. Doesn’t seem like it would have helped the “Fukushima 50” 3 years ago or so.

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About this site

This website updates the latest news about the Fukushima nuclear plant and also archives the past news from 2011. Because it's always updated and added live, articles, categories and the tags are not necessarily fitted in the latest format.
I am the writer of this website. About page remains in 2014. This is because my memory about 311 was clearer than now, 2023, and I think it can have a historical value. Now I'm living in Romania with 3 cats as an independent data scientist.
Actually, nothing has progressed in the plant since 2011. We still don't even know what is going on inside. They must keep cooling the crippled reactors by water, but additionally groundwater keeps flowing into the reactor buildings from the broken parts. This is why highly contaminated water is always produced more than it can circulate. Tepco is planning to officially discharge this water to the Pacific but Tritium is still remaining in it. They dilute this with seawater so that it is legally safe, but scientifically the same amount of radioactive tritium is contained. They say it is safe to discharge, but none of them have drunk it.


June 2014