Connecting Multiple Solar Panels To One Charge Controller

Connecting two solar panels in parallel.

Connecting multiple solar panels to one charge controller.

If you connect the output of each controller on two separate battery banks each controller will charge the bank that is connected to its output using whatever power is available depending on the need state of charge the battery bank has. Generally speaking it is a good idea to obtain your solar panels before you buy a charge 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. You can think of a charge controller in the same way that you would think of a hard drive on a computer.

There is only a certain amount of data that a hard drive can store so you typically purchase a hard drive that is big enough for your needs. Connect the negatives to the negatives and positives to the positives. Maximum rated voltage 19 8v. Yes you can have two controllers on a one set of panels array.

If both panels are rated at the same maximum voltage then you ll get maximum output. For example our 115w sunpower solar blanket has the following ratings.