If you had 4 solar panels in parallel and each was rated at 12 volts and 5 amps the entire array would be 12 volts at 20 amps.
How to connect 2 solar panels together.
You have two different higher voltage solar panels i e one 100w 24v and one 200w 24v that you want to connect to the already working 12 v solar power system comprising the two 12v 50 w solar panels connected in parallel from the previous scenario see the picture above.
The rule of thumb when connecting solar panels directly to a battery is never connect more than c 10 watts where c is the capacity of your battery.
The wedgetail camper has two solar inputs via red anderson plugs.
It s all in the wiring.
The first is on the roof.
After these clarifications let s see how the series connection takes place.
This is used when the solar panel is stored for travelling.
They can be wired in parallel.
Wiring solar panels in a parallel circuit.
When solar panels are wired in series the voltage of the panels adds together but the amperage remains the same.
So if you connect two solar panels with a rated voltage of 40 volts and a rated amperage of 5 amps in series the voltage of the series would be 80 volts while the amperage would remain at 5 amps.
Connect all the positive terminals of all the solar panels together and all the negative terminals of all the panels together.
By connecting multiple solar panels in series we increase the system voltage.
For example a 110ah battery should never be connected to a panel more than 11w without a solar controller and if you are using a solar controller you do not need a blocking diode.
In a solar power system the higher the voltage and the lower the energy losses along the cables to know the maximum system voltage we usually just need to turn the panel and read the label where the value is reported.