Go to Ebay you will find these solar gadgets under various headings: Car
access. alternative energy.electronics,home...
don't take "not found" for an answer.
Greetings mike
"John Gaquin" wrote in message
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"John Gaquin" wrote in message

If you know, or know someone who works for, a VW dealer, that could be a
good source ( i.e., $0). Every new VW comes off the transport at the
dealer with a small solar charger wired to the battery and suction-cupped
to the inside of the windshield.

Clarification: the panel is about 10" x 10", and is not actually
hard-wired to the battery. The panel cable merely plugs into the
cigarette lighter, providing enough trickle to keep the battery alive.