First, I want to express my gratitude for all the time and effort so many of you put into sharing your knowledge & experiences on this forum. I’ve learned so much so far thanks to your thorough explanations. Inevitably though, more and more questions arose and while I tried to find all the information out there, there are still some uncertainties and I would feel a lot more comfortable running this by youse.
Based on rough estimations using solar & electrical usage calculators and common sense we came up with this “ideal” set-up (I might use these exact products or similar):
3 x Deep Cycle GEL Battery 12 Volt 200Ah in parallel for 600Ah bank https://www.renogy.com/renogy-deep-c...12-volt-200ah/
These are rated 1000 cycles at 50% DOD, compared with same capacity AGM, rated 500 cycles at 50% DOD.
Batteries Cycle charging Voltage is 14.2V and Recommended Maximum Charging Current is 40A
2 x 300 Watt 24 Volt Monocrystalline Solar Panel - series or parallel?
- OR similar; I found the same configuration USA made frameless&semiflexible on Ebay for a lot cheaper. I like the idea of having them mold to the curvature of the roof instead of building a frame&brackets for rigid panels. But also, I’ve heard many people say “stay away from cheap panels”. And rigid seem to cool off better because they allow air flow underneath. But they stick out more. Recommendations?
The series vs parallel question is related to the next puzzle piece - the Charge controller. I’m leaning towards parallel because of the shading concern, but the thinner AWG used in series is also appealing. I was thinking 60A MPPT would be good in case we decide to add on another panel in the future. But is it too big for either 48(72)V/300W or 24V/600(900)W, and should I go with smaller/bigger CC to ensure ideal efficiency?
Charge controller - something like this https://www.amazon.com/DPJ-Charge-Co...ds=SRNE+ML4860
(I am so very open to other suggestions because the models out there seem to be multiplying with few reviews catching up)
KeyLine VSR battery isolator 140 A. I plan to fuse in both battery systems https://www.amazon.com/gp/product/B0...BGOVPAGN&psc=1
“Cuts in at 13.3 volts and cuts out at 12.8” - Any concerns I should have with the type of batteries I’ll be using? Is 140A right for my application or should I go higher amperage? Any better isolators out there?
Pretty much everything we need to power is 12V (fridge, maxair fan, lights, etc) but we will add in an inverter(/charger) for any possible AC needs. We’re installing a horizontal propane tank for furnace heat, hot water & stove/oven.
Thanks so much for taking the time to read this; I’m looking forward to your replies