Affordable Solar & Wind

Is there a kind of light that one can purchase which will charge solar panels?

I have a watch that runs on solar power, and it runs out of battery too soon, when it gets dark in alaska winter.

Most Solar Cells work in a single narrow band of electromagnetic emission.
It has to to do with chemical properties of the photocell.

there are a few that react with multiplier frequency bands ,(3 maybe) .
And the cost reflects it's efficiency.

So Lets assume you have a standard incandescent bulb or standard florescent bulb as power source.

Then I have to determine what kind of photocell you have

Simple way is for you to test. One day under incandescent, one day under florescent ,see what holds charge best.

I was going to look it up. When I realized I do not have make of watch. Oops.

Most cheap photo cells are "thin film" yet that is no qualification of a particular EM band .

Absorption of energy is distance squared ,IE.the closer to light the square to the power absorbed.

With incandescent bulbs put out a lot of wasted infrared heat. So careful not to melt your watch or components.

if not solution ,Studied solar ,E-mail.

PS cadmium batteries have a "memory" of previous charge cycles.
Solution is full discharge (days) and then full charge (days).
Or replacement.

.

Solar Panel running a 12volt Fluorescent Light

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