Some electronic knick knacks powered by water.

[spacecowboy]

Some electronic knick knacks powered by water. https://www.youtube.com/watch?v=TTnMwShsacE

[Cherryman]

Some electronic knick knacks powered by water. https://www.youtube.com/watch?v=TTnMwShsacE

Great!  Nice work!


tnx for sharing.

[dieter]

Lovely little devices. Voltaic Pile, but nicely done. Tho, info on PH of the tapwater would be important.


Speaking of Voltaic Piles, it's possible to get a voltage from similar metals with individual molecular structure, eg. activated coal and graphite (this still decomposes to CO), probably worth trying two kinds of gold or other "nonoxidizing" metals.

[spacecowboy]

Ive always found these kinds of water batteries amazing, they supply power for years to decades, Ive had some knick knacks running over ten years on just water, I dont add any additives, no salts or acids or anything else, thats what makes the electrodes last so long. I just add water when needed, and maybe once or twice a year clean the electrodes, sometimes not even that often. In my opinion thats a very long time for a battery to supply power, and looking at the rate of erosion on the electrodes they may still be supplying power 50 years from now. Oddly you dont hear much about these kinds of batteries at least not in the sense of them being useful, but they can be very useful. I guess just to much money is made on throw away or rechargeable batteries that dont supply power that long.

[dieter]

How much voltage gives you one Mg-Cu Element?