solar panel issues

[Kai]

I have tested the short circuit current of two 100 W solar panels from TEMU and found they are under 700 mA in partial cloudy days. Once connected to solar controller, their output voltage drops to almost same voltage as lithium battery's. It means they have about 1 to 5 W charging power. I am going to test again in sunny days. Are they normal or faulty solar panels?

 

[birdman101]

If you put a meter directly on panel leads before going in controller you usually have between 19 to 22volts. On a dull day around 16 volts