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Let your solar panels keep your vehicle battery charged with the Guardian 12V Plus Charge Controller from Ground Zero. Simply connect your solar panel using the 8mm or 4.7mm connector and attach the alligator clips to your battery to make sure you have a full charge, without any worries about overcharging.
The Power LED will light up green when a solar panel is connected; the Battery LED will show the progress of the charge, from fast-blinking red (low voltage recovery) to solid green (fully charged).