Connecting Multiple Solar Panels To One Charge Controller

Connecting two solar panels in parallel.

Connecting multiple solar panels to one charge controller. You can think of a charge controller in the same way that you would think of a hard drive on a computer. Each controller is independent and the outputs will not be parallel unless you put them that way. 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. Generally speaking it is a good idea to obtain your solar panels before you buy a charge controller.

If both panels are rated at the same maximum voltage then you ll get maximum output. Large off grid solar and battery backup pv systems often require greater charging than a single controller can provide. Yes you can have two controllers on a one set of panels array. For example our 115w sunpower solar blanket has the following ratings.

Maximum rated current 5 8a. Connect the negatives to the negatives and positives to the positives.