Solar charge controller selection help needed
I am looking to put in a solar system that will produce about 30 amps per day. I choose a semi-flexible 135 watt panel made by Sunpower which meets my capacity needs. My only problem is choosing t...
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westend wrote:
The MS Sunsaver MPPT-15 would work with the two modules but it will clip output to 15 amps. I use the same controller with a 235W 24V nominal panel on a 12 V system.
The 200W PV rating is nominal in that the controller will handle additional current and the voltage input limit is 70V. It won't output anymore than 15 amps.
Edit: Looked up the output of the modules you've bought. Max current of 5.45A and SCV of 24V. You will be hard pressed to get those modules to deliver more than 15A of output to a battery. You do mention that you may buy another module so the bigger Tracer is going to be the better controller for your plans.
Let us know how the controller works for you, there aren't many MPPT controllers in this range at that price point.
I ended up getting 2 modules for a total of 270 watts. I was told to connect them in series for better efficiency so it will be about 60 volts.
I will certainly let you know how well it works if you tell me what to look for.
