I have a solar charger i use to keep the battery topped up in my Jeep, it was on a special offer at MAPLINS, it works ace. you don't need a regulator with this panel either. It is only a trickle charger though just to top up what your alarm takes out over long periods.
this one
Solar-Powered 12V 1.5W Battery Trickle Charger
only £9.99
I also use a me. sized 40watt solar panel to top up my 110Ah Leisure battery while camping and i run loads of stuff from that inc: a fridge/freezer made by Waeco the cf25 and a lcd tv, dvd player, dab radio, LED lighting all my 12 volt stuff and a step down unit that runs 3,6,9 volt stuff too. No EHU needed when we camp.
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aka Paul
“Imagination is everything. It is the preview of life's coming attractions.”
I hear what jjim is saying but i'm guessing he had a duff one as mine has been going strong for quite some time now. It's only £10 and it saves my battery draining down and i don't have to take it out anymore to charge it = pain in the butt. I think even £10 is worth the 6 months of not having to take the battery out for a charge, it should still be under the guarantee, why not take it back if it's not too late now?
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aka Paul
“Imagination is everything. It is the preview of life's coming attractions.”
Amazing family weekend with old steam engines, classic car displays, market stalls, and full catering and bar. And camping on site - Save £25 by booking in advance.