"Alec" wrote in message
...

I have a customer with a small chalet with no electricity. I fitted a
basic domestic alarm connected to a 75 ah leisure battery. What would
be best to trickle charge the battery wind or solar power. Also the
charging device would have to be about 20-30 feet away from the chalet
because of tree cover. Any help much appreciated. Let me know if you
need more info.

Based on observed practice, I'd suggest wind. I've noticed a large number of
Rutland (type) wind chargers on boats I see on a regular walk I do. Even
this morning I noticed one that was spinning two quick to count the blades
but the wind was imperceptible. It was very compact, blades turning
diameter probably only 15" or so.

May be worth dipping into the rec.boat.electronics newsgroup, the
application is similar.

--
73
Brian
www.g8osn.org.uk