If you’ve got very different solar panels, without question, the best way is to have each solar panel have its own independent charge controller. If that’s not an option, however, we’re here to give you some DIY ideas and demonstrate the best way to wire up mismatched solar panels.
In the demonstration below, we are doing the same amps, with different volts and watts. So, we have two solar panels, a 100W 24V solar panel, with a short circuit current of 3.03A, and an open circuit voltage of about 44V. And we have a 50W solar panel, with the Isc, the short circuit current, also at 3.03A and its Voc is half of that, about 22V. We are going to show the power that they output going through an MPPT charge controller, into a 12V battery. And then we will be able to see independently how much power they put out and also how much power they put out if we wire in series and in parallel.
Let’s get started…
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