Excellent people, products and communications, thanks.
I had asked them advice, as I am not knowledgeable in electrics, they guided me through no problem, they are down to earth, practical, efficient, human, just in reach..... and nice... what more..
• Amorphous solar panels convert daylight directly into 12V electricity. • Suitable for maintaining charge in a wide range of batteries and power packs. • Ideal for batteries stored in boats and caravans and for batteries in vehicles in long-term storage. • IP44 Rating (non-waterproof). For use behind car windscreen or other protection. • Supplied with optional screw fixings, battery clips and vehicle accessory socket plug (only suitable for vehicles with “permanent live” accessory socket).