I have a new 5-45w controller. If I connect a known to be good 12v 7ah battery to the controller input side, the yellow charging light blinks, however, I get 0 voltage reading on the output side. Same when I connect my 20w panel to the controller. Panel is putting out 15-17v depending on sun angle, yellow charging light blinks, but 0 on output side of controller. Is this normal?
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