A comprehensive guide on how to test solar panels using a solar panel multimeter and a standard multimeter. I use the Klein CL800 and the Elejoy (FrogBro) EY800W to perform the tests. Also, we will see the difference in power between a slightly used and brand new panel of the same make and model.

It should be noted that while a multimeter will give you an indication as to whether you have a working panel or not; it is not necessarily the most accurate device to use when testing solar panels as they should be tested under load.

I also cover how to use a multimeter as well as how to read solar panel specifications. The solar panel meter I used in this video has a 60V limit, so it is not very useful when trying to test more than one high voltage output panel (above 30V) in series. It’s intended for lower voltage panels. Otherwise, you would have to connect your panels in parallel, thus requiring a branch connector to do so. It's best to just test panels one at a time if you are trying to figure out if you have a bad panel somewhere.

800W Solar Panel Meter CHEAPER (affiliate link)
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SanTan Solar New & Used Panels (affiliate link):
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Video: Testing USB Solar Panels
   • Testing USB Solar Chargers with LiFeP...  

0:00
0:00 Intro
0:48 The Panels
1:21 How to Read Panel Specs
2:39 Tips for Testing Panels
3:08 About the Meters (Probe VS. Clamp)
4:33 Multimeter Basics
6:01 How to Probe MC4 Connectors
7:27 Test Single Panel (250W)
11:04 Why Panels Should Be Tested Under Load.
11:45 Test Single Panel (335W Used)
12:55 Test Single Panel (335W 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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3% Coupon Code: NATESDIY
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Current Connected: ReadytoRun Solar Kits and Victron Equipment
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SFK: Quality DIY Battery Enclosures and ReadytoRun Batteries:
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Contact Information:
I am not available for personal solar system consult!

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

FTC Disclosure Statement and Disclaimers:

This video is NOT sponsored. Some product links are affiliate links, which means if you buy something, We'll receive a small commission.

Videos on this channel are for EDUCATIONAL purposes only.
Electricity is dangerous and can kill. Please use common sense.

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