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Almot
Jun 11, 2021Explorer III
Maybe one of the panels is dying - 120W solar suitcase consists of 2*60W in parallel. Or there is a poor connection somewhere. Measure the current inline for either panel, directly on the panel lead, and then again on the output lead of the entire 120W array - before the controller. Easier to measure with clamp-on DC meter but with some care possible to do with a regular meter.
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