Testing 12 used solar panel for VOC. Qcells 325w

[Solarmadness]

I will getting 12 used solar panels soon.When testing should these panels be covered with card board or blanket to get a better voltage reading or in sun light.

 

[timselectric]

As much sunlight as possible.

 

[Solarmadness]

As much sunlight as possible.

Ok great thanks.I will also number and record outputs.