i am looking to build a small solar generator to power a few lights and so forth, i have a deep cycle gel car battery, but what watt and volt solar panel would i need to charge it in an efficient amount of time? also, is it possible to hook up 2 small solar panels to one battery to charge it or would that not work? like would 2 5 watts be as good as a 10 watt?
thanks!
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More watts is more power, because watts are a measure of power. Most solar panels produce the right voltage to charge a car battery, but you should really have a charge controller too. See the source for some ideas.