Solar Panel for Caravan
Discussion
You need to work out how much power you use over time vs how much a solar panel can recharge.
A 100W panel will only provide you with 100W while the sun shines, so if you're using 100W 24-hours a day, you may need 2x 100W panels to take advantage of the sun while it's out AND enough battery capacity to keep you running through the night.
In practice, a 110Ah battery will keep most people going through the night (bearing in mind you're not actually awake and using the juice all night), if not a few days (modern caravans don't use much power) so a single 100W panel ought to be enough to keep one battery topped-up. In fact, it'd probably keep 2x 110Ah batteries topped up.
The fold-out ones I've looked at aren't great though, in terms of output power. This one looks like a nice package but only outputs 40W (again, inly when the sun shines):
http://www.amazon.co.uk/Photonic-Universe-folding-...
A 100W panel will only provide you with 100W while the sun shines, so if you're using 100W 24-hours a day, you may need 2x 100W panels to take advantage of the sun while it's out AND enough battery capacity to keep you running through the night.
In practice, a 110Ah battery will keep most people going through the night (bearing in mind you're not actually awake and using the juice all night), if not a few days (modern caravans don't use much power) so a single 100W panel ought to be enough to keep one battery topped-up. In fact, it'd probably keep 2x 110Ah batteries topped up.
The fold-out ones I've looked at aren't great though, in terms of output power. This one looks like a nice package but only outputs 40W (again, inly when the sun shines):
http://www.amazon.co.uk/Photonic-Universe-folding-...
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