I recently acquired a Smart Solar MPPT 150/45 TR. I used the Victron MPPT Calculator and the recommended settings based on Victron solar panels, was this model. My question is The following.
Based on the Nominal PV power @ 12V for the controller is 650W. My total PV array power with all PV cells in Series will be 700W. The Voc for each pannel is 24.3 and Vmp is 20.3, the current is Imp 8.62A and Isc 9.35A. If I used these 4 panels in this case I will be exceeding the recommended power in which I know is not good; But when I typed my numbers it appeared to be good for this model in the calculator as seen below:
Using other calculators and taking into consideration the temperature effects it will give me 60Amps which also exceeds the current parameter.
My battery is a Lifepo4 at 12Vdc or 14.4Vdc (400AH). If I do a manual calculation using the MPPT of 700W/14.4 it gives me 48.61A. (1) Should I drop 1 solar panel to reduce the wattage, to be on the safe side or (2) should I do a parallel series arrangement for this controller? On a similar note the PV array will be 40ft away from the solar controller, the MPPT Boost effect only occurs downstream meaning on the output of the solar charge controller or this MPPT boost effect occurs input and output of the controller. This is just to know how I will size my Input cables from the PV array and the output to the batteries. Thanks for your help in advance.