Can i find a led lights that works on about 30-40 microamps? Its for a retro solar panel.?

Its for a solar panel with really low voltage that can only produce about 30 to on a sunny day 50 micro amps. Im looking for a led light that would prove that is working besides an amp meter.

Lowest you are going to find is 1-2 mA.

You may be able to use a capacitor discharge method, and there may be IC’s that do that. That is, you store charge in a cap and use that to blink the LED every few seconds.

here is a circuit i found.

http://www.discovercircuits.com/PDF-FILES/3vledfs1.pdf

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