Using 2 controllers for one system?
I am helping a rural woman here in Veracruz that has 2 old solar systems on her 2 buildings. One uses 3 (12 volt) panels totaling 210 watts with its Spanish made 12 amp controller. The other uses 3 (12 volt) panels totaling 180 watts with the same type controller. I want to combine them on one roof (the one with the most sunlight). I am trying to use the 2 contollers as they are connected now, but with COMMON BATTERIES to better distribute the energy. It is difficult to buy a new controller here in Mexico (and expensive) What do you think?
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