Testing your solar panel is easy.
How to test voltage on a solar panel with multimeter.
If you need a multimeter you can get the innova 3320 auto ranging digital multimeter here htt.
Some exceptions may apply based on panel type.
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.
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 to read up to 200 volts to ensure that you receive an accurate reading.
Make sure that you are measuring at the suitable voltage level for a solar panel.
Simply touch the solar panel leads with the multi meter probes matching their corresponding polarity red to red black to black.
Set multimeter to dc.
Set the meter to above 200 vcd to ensure you get the most accurate reading possible.
All you need is a multimeter.
Next you need to set your digital multimeter to volt settings dc.
For example if your panel has approval for 30 volts set the multimeter to have a higher reading.
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.
As most solar panels are 12 volts the solar panel test methods are basically the same.