Hi,
Mppt MIGHT garner 10% more harvest, but only under ideal conditions. It is true that charging MAY start sooner, and MAY stop later in the day, but there are no real life tests that I've been able to find.
Remember too, that if flooded jars are used, the Mppt controller will go into PWM mode once 85% state of charge is reached.
obiwancanoli wrote:
pianotuna wrote:
What do you hope to improve with MPPT? Given that there are already 480 watts of solar, any competent PWM controller may work well.
My goal is to minimize any power loss between the panels and the batteries by making the most efficient use of the panels, and their charging efficiency. If each panel has the capacity to provide 8.7 amps of charge, I've read that without the MPPT controller, I could lose up to 30% of those amps in the process, and thus, it would seem to take longer for the batteries to recharge, or to maintain their charge. In times of limited sunlight, it seemed wise to make the best use of the tools available, and it appeared such a controller would improve the charging process.
Am I correct? Am I asking too much of the system already in place? Much ado about nothing?
