Evaluating a used solar panel & controller?
Hello folks - Thete's a 100 watt panel plus controller, local to me asking price $100. I emailed the seller and asked for details and what make/model of controller. (No reply yet.) I'm pretty s...
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Look for panel AMPERAGE rating on the label. If you handheld mutimeter can take the amperage using the high amps DC scale, connect the meter leads and switch the dial to amps.
Take the panel out in full sun between 10AM and 2 PM
Nothing should be connected to the panel. Connect your two meter leads ACROSS the panel positive and negative electrical connections. Aim the panel right at the sun.
What does the meter say for amperage? Does it closely agree with the short circuit "I" listed on the panel decal?
Others will want to contribute here.
Take the panel out in full sun between 10AM and 2 PM
Nothing should be connected to the panel. Connect your two meter leads ACROSS the panel positive and negative electrical connections. Aim the panel right at the sun.
What does the meter say for amperage? Does it closely agree with the short circuit "I" listed on the panel decal?
Others will want to contribute here.
