> Batteries need to be replaced. Checked for cheap caps on ebay and
> found approx AU$50.00 for 1.5 farrad. This is a guess as it still a
> few hours to go.

Calculate out the size of the smallest battery you could get away
with, in amp-seconds, and let me know.
That translates directly to farads, if you specify a reasonable voltage drop.
You'll find that it takes an obscene number of farads to equal an amp-hour.

> And there is something about cooling my beer down (not that I am a
> beer drinker) for *free* (minus initial cost of fridge, solar panel,
> cap and beer and their wear and tear).  And the way I figure it, it
> seems to be a perfect match as there are all those lovely power
> producing daylight hours way before the first can gets cracked.

I hear ya, but sometimes "free" is pretty expensive.
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