A comprehensive guide to testing solar panels using a solar panel multimeter and a standard multimeter. I'm using the Klein CL800 and the Elejoy (FrogBro) EY800W to perform the tests. We'll also see the difference in performance between a slightly used and a brand new panel of the same make and model.

It is important to note that while a multimeter will give an indication of whether or not your panel is working, it is not necessarily the most accurate tool for testing solar panels as they should be tested under load.

I also explain how to use a multimeter and how to read solar panel specs. The solar panel meter I used in this video has a 60V limit, so it's not very useful if you're trying to test more than one high voltage output module (over 30V) in series. It's designed for lower voltage modules. Otherwise, you'd have to connect your modules in parallel, which requires a branch connector. If you want to find out if you have a bad module somewhere, it's best to test one module at a time.

800W Solar Panel Meter – CHEAPER (Affiliate Link)
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SanTan Solar – New and used panels (affiliate link):
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Video: Testing USB solar panels
https://youtu.be/gbXcJI6VRcI

0:00
0:00 – Introduction
0:48 – The panels
1:21 – How to read panel specifications
2:39 – Tips for testing panels
3:08 – About the measuring devices (probe vs. clamp)
4:33 – Multimeter basics
6:01 – How to check MC4 connectors
7:27 – Testing a single panel (250 W)
11:04 – Why panels should be tested under load.
11:45 – Test of a single panel (335 W used)
12:55 – Test single panel (335 W new)
13:56 – Test series parallel panels
17:55 – BRO! What happened to my FrogBro!!!
19:05 – Conclusion

400W Solar Panel Meter (Affiliate Link)
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Low-end multimeter (PROBE ONLY): LOMVUM digital multimeter (affiliate link)
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Mid-range multimeter (CLAMP): Klein Tools CL390 Digital Clamp Meter (Affiliate Link)
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High-end multimeter (CLAMP): Klein Tools CL800 Digital Clamp Meter (affiliate link)
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Current Connected: Ready-to-use solar kits and Victron equipment
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Contact information:
Unfortunately, I am not available to provide personal advice on solar systems!

Email: [email protected]
Website: https://www.natesdiysolar.com

FTC Disclosure Statement and Disclaimers:

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Electricity is dangerous and can kill. Please use common sense.

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