Forum Discussion
BFL13
Jun 06, 2021Explorer II
First idea is that there was a small load on the batteries, taking some of the solar amps. Loads come first and the batteries get what is left over if any. Compare the amps on the Trimetric (battery amps) with the amps showing on the controller (solar amps)
Another thing to check is take the Isc of the panel out past the controller (put meter across the pos and neg wires from the panel) and compare with what the controller displays as amps. They should be the same except for a tiny loss on the wiring from panel to controller.
If there is a bad connection or whatever making high R, that could reduce the amps getting to the controller and its output.
I have a Solar 30 and it does a good job. Sometimes the set-screws for the wires to it get loose which you could check on yours.
Another thing to check is take the Isc of the panel out past the controller (put meter across the pos and neg wires from the panel) and compare with what the controller displays as amps. They should be the same except for a tiny loss on the wiring from panel to controller.
If there is a bad connection or whatever making high R, that could reduce the amps getting to the controller and its output.
I have a Solar 30 and it does a good job. Sometimes the set-screws for the wires to it get loose which you could check on yours.
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