ergvgdvgrd·il y a 3 ans·discussI did something similar, but gave up chasing parasitic electrical losses and didn't want to make the solar panel to power it huge.
ergvgdvgrd·il y a 3 ans·discussMe too! Was astounded by the price of a standard solution and said to myself, "I can do that cheaper [ assuming my time is worth less than minimum wage.]" Still works, 7 years after install.