Multiple Solar Panel Controller

Mismatched specification panels will always lead to a compromise in performance.

Multiple solar panel controller.

To meet high power charging requirements several solar controllers can be connected in parallel to a battery bank with each controller connected to its own separate pv subarray. The two banks are charge separately using the same controller and solar panels. Most solar charge controllers will only allow you to charge one battery. However there is no problem for multiple controllers to serve a common battery if that is what you want to do.

If i were you and because solar controllers are usually a lot cheaper than solar panels i would buy another solar controller and operate each panel separately. Mppt controllers have a switch mode buck converter. The connection of multiple solar panels in parallel arises from the need to reach certain current values at the output without changing the voltage. Solar controller mppt support pc software app and mt 50.

If you have more panel wattage than your controller can input then you must use 2 or more controllers as separate solar panel arrays. There are different sized charge controllers that are designed to handle varying amounts of solar panels. Charge controllers regulate the electric current that is transmitted to and from solar panels which prevents overcharging and increases their lifespan. In fact xantrex makes a communication cable to wire between controllers to do exactly that function.

With a max input limit of 100v the epever 40a charge controller is ideal for use with small and medium size arrays. Two of them on one panel will get very confused. Once the battery is full the charge controller switch will be mostly off so the other charge controller can use the solar cell. Cheap charge controllers are a bang bang mosfet switch so either the battery is straight on the solar cell or not.

Sealed gel flooded and lithium. There are a few charge controllers that have now added the default option of having two battery banks. Multiple load control method mppt controller 40a with blackligh lcd screen for displaing system information and working condition. Ideal for small and medium size arrays.

For mppt controllers mppt tracking of each subarray is preferred as there is less impact with voltage mismatches.