Solar Panel 12v

Regulate Voltage from 12v 500ma Solar panel?
I need to find out how to regulate the output voltage from my 12 volt 500 ma solar panel. Its a 12 volt panel but depending on how bright the sun is it can output all the way to 15 volts. So i need to regulate anywhere from 15-12 volts which can vary with the sun. Down to exectaly 8 volts to charge a battery. How can i do this?
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GoldenGadgets – 12V Solar Panel Battery Charger
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Sundanzer Solar-Powered Refrigerator – 1.8 Cubic ft 24.5inL x 27.5inW x 36.5inH High efficiency Sundanzer solar-powered 12-volt DC freezer provides exceptionally low energy consumption and durability, requiring less expensive power systems and providing lower operational costs. Can run on a 110-watt solar panel, 100 AH 12V deep-cycle battery and 10 Amp charge controller (not included) in most areas. Some situations may require more power depending on ambient temperature, inte… |