Solar wasted watts/volts
I am curious what happens to the watts /volts when your system is fully charged and you have no demand? Were does the extra power go?
Forum Discussion
pianotuna wrote:
Some of the top of the line controllers do have voltage sense wires.
I would say that most top of the line controllers have voltage sense. Morningstar MPPT (at least, those 45-60A). Rogue 30A MPPT have it - or had, before going out of business, couldn't compete with $2/hr Chinese labor. For controllers 30A and higher this is a must to have.
Though I don't see how this is related to perceived "problem" of excess power (that is not really a problem, as many have noted). Voltage sense is to prevent voltage drop from affecting the voltage setpoints on battery terminals. Then controller brains would do their job, adjusting the absorption time and/or other parameters according to battery state of charge. Diversion doesn't have to be a part of this. One could use a diverted energy to heat the water, not big deal to me, it's not too cold and propane works well.
