I am emailing with BlueSky. They cannot charge two different battery banks if they have different chemistry, which mine have.
I am going to buy panels
for array # 2 from here:
Teknik för alla väder Den nya generationens Flexibel Solpanel - 21,5% effektivitet
They only have flexible panels.
Array # 1 on arch will be solid panels. Will buy cheap
to mid range stuff, not the most expensive marine
panels on the market. 3 identical panels.
I want to give the start battery at least a little push from solar. Again, one of the two regulators should charge the start battery a little.
I haven't bought the start battery. I will buy something cheap
. Is Global ok? They're really cheap. Or pay slightly more for Tudor?
Teknikhamstern state you should only have one MPPT regulator and parallel connect everything into that regulator. Or you might face the problem of one of the regulators seeing high voltage on the battery bank and turning off = no charge from its solar panels. They are right, but the cabling for array # 1 will much easier if I do it in series and they will get very little shade.
SunDuo PWM can charge Start + house bank (Array # 2) (http://www.morningstarcorp.com/products/prostar-mppt/
PS-MPPT-25M ( http://www.morningstarcorp.com/products/prostar-mppt/
) for array # 1 (serial) ONLY charge house bank.
They do not communicate with each other but they state:
" The PS-MPPT-25 and the SS-Duo can also share one of the battery banks and it should not be a problem. As you mentioned, the PS-MPPT does have remote
temperature and voltage sensing, however the SS-Duo only has remote
temperature sensing (no voltage sensing). The controllers do not actually communicate with each other, but this should not pose a problem as the PS-MPPT can current limit based on the real-time voltage it measures at the battery. As long as you use the same charging profile for the shared battery and initiate the controllers at roughly the same time, they should stay in sync throughout the battery charging stages."
Can I trust that, please?
I am going to buy regulator(s) from any of these companies
Victron Solar Controllers, MidNite Solar, Outback Smart Harvest Controllers, Morningstar Controllers, Blue Sky Solar Controllers
& Western Solar Controllers.
Found the list here:
From my limited knowledge, I will buy same brand for both regulators.
Another option would be to parallel couple also Array # 1 and connect everything to one MPPT regulator, top of the line, 45 A or so. Pain in the ass though. Cost-wise the same I'd same, more cables
and time consuming.