good info..
I do understand the 12v battery and 12 volt PMW. the difference between a tri start 45 amp and a bogart 2030 is only like 50 bucks. While i know Handy Bob raves about the bogart system want to make sure I am not tripping over a dime to get to a dollar. (in reading on bogarts site they say in the sc2030 manual it can handle 4 135w panels of 12v panels and I like the pairing of similar equipment so that might work after all. ) I will have the ability to tilt panels on AS as well.
in watching some you-tubers that full-time with solar systems installed by AM solar, one of the better installers, they still have issues when camped in shaded areas like the north west or pretty much anywhere on east coast. SO more is better in panels. (currently east coast based)
I agree with the 20 amp mppt controller i have as being usable. I do plan to have ability to tilt panel on pickup for winter low sun angles so that might be OK overall..
Doing a bit of reading it not uncommon to mix mppt and pwm on same battery bank.. one item of interest was to make sure the different points of charging rates were same. ie bulk 14.5, float 13.2 etc..(made up numbers) so one controller is not trying to do bulk and the other in float. I need to make sure I have enough control of the mppt controller to do that.
The MPPT controller is a Tracer 2210RN and appears to have set voltages depending on type of battery. I understand the tristar is very adjustable with remote meter and the 2030's have some adjustability as well.
getting there, thank for info.
BFL13 wrote:
The Bogart 30 amper can run 460w of panels aimed at a high sun for 29 amps plus it is able to clip the amps at 30 if you ever get more amps.
You do understand that the PWM controller must be on a 12v array with 12v batteries. (still not clear you got that) So it has to go with the 12s on the Airstream.
Meanwhile, you said in the OP you also have a 20 amp MPPT controller. A 335w panel should get around 21 or so amps aimed at a high sun, and all MPPTs limit themselves to their rated amps (or output watts, whatever,) --so no harm in using the 20 amp MPPT you already have with one of those 24v panels.
You won't be getting the full 21 or so amps very long during the day even if aimed, so you are just doing the recommended over -panelling with MPPT to get more AH haul when the sun is lower am and pm.
So you don't need to buy anything. You already have it, so just use it and enjoy! :)
