Solar Panels Brands - does it matter?
I am looking to buy 200-300 watts of solar panels to charge 200-240 ah of battery storage. Researching panels on the web, it seems that prices for solar panels have a very wide range. Putting aside ...
Forum Discussion
Eso
Sometimes the specifications are a bit difficult to understand
Good to see you figured it out
The RV industry is only a small fraction of Morningstar's business
Check out the newest line to their MPPT controllers a 600Vdc input MPPT controller YES full 600VDC not their standard 150Vdc but 600VDC - Telcom and residential markets have been looking for something like this for a long time.
The Battery does indeed power the controller and is typically connected first so that is can sense the battery operating voltage be it 12, 24, 36, or even 48Vdc. RV's use 12Vdc which is the least efficient operating voltage of them all the reason why many residential systems and most if not all Telcom systems use a 48VDC battery.
Sure two each 300watt Voc=24 volt panels will work great with a 45amp controller either in a parallel or a series configiration - only thing is that the system is maxed out from the beginning - for me that's a POOR system design. It's done many times and works for some folks however not something I would design or promote.
I have 560watts and can easily get in excess of 40amps from my 60amp controller to the loads - Quality panels, cool weather and direct sunlight you should easily see the full ratings of the panels. If not something is WRONG with your system. Now if you are in Arizona in the summer that's a different story.
Sometimes the specifications are a bit difficult to understand
Good to see you figured it out
The RV industry is only a small fraction of Morningstar's business
Check out the newest line to their MPPT controllers a 600Vdc input MPPT controller YES full 600VDC not their standard 150Vdc but 600VDC - Telcom and residential markets have been looking for something like this for a long time.
The Battery does indeed power the controller and is typically connected first so that is can sense the battery operating voltage be it 12, 24, 36, or even 48Vdc. RV's use 12Vdc which is the least efficient operating voltage of them all the reason why many residential systems and most if not all Telcom systems use a 48VDC battery.
Sure two each 300watt Voc=24 volt panels will work great with a 45amp controller either in a parallel or a series configiration - only thing is that the system is maxed out from the beginning - for me that's a POOR system design. It's done many times and works for some folks however not something I would design or promote.
I have 560watts and can easily get in excess of 40amps from my 60amp controller to the loads - Quality panels, cool weather and direct sunlight you should easily see the full ratings of the panels. If not something is WRONG with your system. Now if you are in Arizona in the summer that's a different story.
