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
ISTR Salvo and even maybe PT explained that MPPT gets its "gain" when batt voltage is low. So at real batt voltages when being charged during the day from say 13.3 to 14.6, MPPT has no advantage based on that, which goes with reported results.
Also with that, at max amps at mid-day, that's when batt voltage is getting up there, so when those guys got their max amps maybe that was with a higher sort of batt voltage too. No idea.
I still think if Mark replaced his two fancy controllers with my two cheap ones, he would still be able to camp the same way and not notice any difference.
With my 330w and his 328w, I get to 98.5% SOC before 5pm on 458AH batts starting at about 80-100AH below full in the morning, and he has only 300AH, so he gets a head start! :)
Also with that, at max amps at mid-day, that's when batt voltage is getting up there, so when those guys got their max amps maybe that was with a higher sort of batt voltage too. No idea.
I still think if Mark replaced his two fancy controllers with my two cheap ones, he would still be able to camp the same way and not notice any difference.
With my 330w and his 328w, I get to 98.5% SOC before 5pm on 458AH batts starting at about 80-100AH below full in the morning, and he has only 300AH, so he gets a head start! :)
