To test a 18v solar panel voltage output directly put your solar panel in direct sunlight set your multi meter to the dc volts setting.
How to test solar panel damage.
As most solar panels are 12 volts the solar panel test methods are basically the same.
While this is the area that is least likely to sustain damage it is still good to check just in case.
You want to make sure that all the wires are secure and firmly in place.
You want to choose a voltage range capable of displaying the maximum possible voltage of the panel in open circuit this means that if you have a panel rated for 20 volts you should set the multi meter.
When you are inspecting check the underside of the panel as well.
You will want to ensure that you place the positive to positive and negative to negative when attaching your multimeter to the connection on the back of your solar panel.
Solar panels today have become the best alternative as a source of energy.
This is because if one part of a solar panel is damaged the energy output loss is considerable and almost as if you lost the entire panel.
Dangling wires will be more susceptible to wind damage and pesky animals.
It is crucial to test solar panels before you achieve the commercial operation date cod.
You use it to power any form of an electronic device.
Installing smaller solar panels can reduce the damage caused during a hail storm.
How to test a 12 volt solar panel vs other voltages.