2-3v source of energy

[Maxc13]

Hi,
I'm looking for a 2-3v source of constant energy
Please tell me if there's a way to harvest it somehow using new energy harvesting technologies (except solar)
If not could you please advice me rechargeable batteries that would last for few years.

 

[IRstuff]

?? Two D-cells in series? You calculate what your cumulative current demand will be, and buy the appropriate batteries?

TTFN
faq731-376

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