Solar Controllers--Don't be a Sucker! :(
Just got to say it again, how it is we are sitting here for five months off grid on solar with no problems at all (third season on solar like this), using the non-programmable, non-MPPT, solar control...
Forum Discussion
Still fighting my corner, here, I would ask about that wiring. You have to consider the over-all effect on amps to the battery in each case, but the money side is easy to figure.
If the PWM is $100 and the MPPT is $400 , will you save anywhere close to $300 by using the thinner wiring to make the MPPT worth while? An RV is only so many feet, so how many dollars can you save by using thinner wire?
In addition, the controller needs to be fairly close to the batteries whatever type, so the controller-panel length is at issue. But that section of wire is less important for voltage drop with PWM than with MPPT (AFAIK), so what is the real advantage in actual amps delivery?
If the PWM is $100 and the MPPT is $400 , will you save anywhere close to $300 by using the thinner wiring to make the MPPT worth while? An RV is only so many feet, so how many dollars can you save by using thinner wire?
In addition, the controller needs to be fairly close to the batteries whatever type, so the controller-panel length is at issue. But that section of wire is less important for voltage drop with PWM than with MPPT (AFAIK), so what is the real advantage in actual amps delivery?
