Klein CL390 Tools Voltage Testing Solar Panel with Multimeter | Power Energy Test DC Meter

Klein CL390 Tools Voltage Testing Solar Panel with Multimeter | Power Energy Test DC Meter
Solar Energy Solutions: www.ryzzun.com
Klein Tools CL390 AC/DC Clamp Meter amzn.to/3dlkqQC
Used Solar Panel Power Output Test 00:00:00
Klein Tools CL390 AC/DC Clamp Meter 00:01:40
Open Circuit Voltage Solar Panel Test 00:02:17
Short Circuit Current Solar Panel Test 00:03:18
Solar Panel Power Drop Calculations 00:03:55
Final Used Solar Panel Analysis 00:07:36
//Video Notes//
I used the Klein Tools CL 390 AC/DC Clamp Meter in order to test the open-circuit voltage and the short circuit amps of this solar panel. The original open circuit voltage for the solar panel was 32.8 Volts. I have been measuring the open-circuit voltage for this panel at around 27-29 volts as of late.
The current has been measuring between 5-6 amps on a regular sunny California day. The original short circuit current was measured at 8.05 amps.
After doing some quick math, I calculated that there was a degraded voltage drop of about 13% over the last 10 years.
This solar panel still produces energy and does work even though it has a lot of damage on it from various factors such as sun intensity and voltage and current loads over the years.
I wouldn't recommend for someone to go out and buy a used panel such as this one in order to use it on an off grid home solar system with battery backup. I'm mainly going to be using this to do some tests and learn more about how much a used panel performs over the years.
*Luis Angel and Ryzzun get an affiliate commission if you purchase an item from the links above.
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[@Ryzzun]

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[@Curb71]

Wouldn't the meter be checking the Vmp, not Voc?

[@Ryzzun]

No. You would measure the VMP after attaching a load to it. When you're measuring the voltage directly from the solar panel in this manner, you're measuring the open circuit voltage

[@Curb71]

@@Ryzzun gotcha. Is checking the amperage with this method the Imp or Isc?

[@JacobGardnerGlobal]

Say amp clamp 10 x’s fast!

[@Ryzzun]

Amp clamp 10x fast

[@Honk_Clank]

Cl390 Display sucks in direct sunlight

[@KenFung]

I have this meter and it is not that bad to read under direct sunlight. It was difficult to take photo of the display under sunlight to be honest.

[@Brian-uq6jm]

​@@KenFungthere's really no point in defending this, it's objectively bad under direct sunlight.

[@KenFung]

@@Brian-uq6jmobjectively, it's similar to wearing sunglasses at nightclub. The display looks sexy. The coolness is beyond functionality and it's a win.

[@georgedavall9449]

Wow