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Topic: Solar Panels
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Page: 1 2
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04/9/2005 at 9:23am
Location: South Wales Outfit: Khyam Rigipod Excelsior
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The issue with Solar Panels is not that they dont work, since clearly they do, but they are a very expensive solution to a simple problem.
Take the example that someone mentioned of a real test in a real magazine where a battery lasted 5 days without a solar panel and 10 days with.
If the battery is a 110Ahr one (fully charged) then the useage is 22Ahr per day.
If you want extend the battery life to 10 days you need to provide a total of an extra 110Ahr over 10 days or 11Ahr per day. That will require in the typical UK summer a 50W Solar Panel which from a reputable dealer will cost around £300. In winter you would need a Solar Panel of around 150W, costing around £800.
So the cost of providing your 10 days of power are;
Summer - 110Ahr battery + 50W Solar Panel = £350
Winter - 110Ahr battery + 150W Solar Panel = £850
Summer - 2 off 110Ahr batteries = £100.
Winter - 2 off 110Ahr batteries = £100.
So which is the most economic way of providing 10 days of power ?
------------- Stuart.
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12/12/2005 at 10:17am
Location: Yorkshire Outfit: Car & Caravan
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Some good points here, sorry I came in late. I use solar panels, when I arrive on a site my battery is about 13.5 volts charged from car. when I leave a site after 1 week or 2 and after using lights TV etc etc the battery is 14.8ish
I would forget the maths and try a panel before poo pooing them, solar power and regulators have improved a lot.
In all the facts and figures no one has stated what type of regulator they use, if they are p.w.m. or even trackers
I suppose mobile phones, are just something to fill your pocket, hard work carrying the suitcase around with the battery, besides you cant get a signal unless you stand near a shop etc with the rabbit sign, (and we are no longer charged to receive calls)Dolly tubs have also gone they replaced rocks to clean our clothes on
Go on try a new multy crystalline panel, with new generation hybrid regulator. 40/50 watts to be on the safe side
you will be pleasantly surprised
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