12v? 24v? 36...48v????
I'm very near to picking up a new travel trailer that I intend to pack with solar and LiFePO4 batteries. It's a 30A 120VAC RV. I understand the electrical wiring advantages of the higher DC voltage ...
Forum Discussion
CA Traveler wrote:
StirCrazy Serial panels with bypass diodes which all large panels have is more shade tolerant than parallel panels and this is especially true when there is shade like a A/C involved. It's a factor but not necessarily hugh.
I wanted a more efficient system but adding another panel may be a better price performance option.
For me 1500W solar systems "require" the larger 60/72 cell panels and MPPT. 12V panels for 1500W is certainly possible but last time I looked more panel cost and more panel square footage.
yup I have the 72 split cells on my camper (24V) which is what I recomended. I don't think I'll ever use 12v panels again. and I don't ever recomend a PWM controler even if you just have 1 12v panel. so much more effiency in a MPPT. I think what I said before (whith out going back and checking would be four 400 watt panels if there is the room giving your 1600 watts, depending on the controler you can do two series strings in paralell wich will keep the input voltage at 48V and the controler will convert that to 12V high amp charging. because you can place the solar controler right beside the batteries the cost of thick cable will be minimal and you won't need to spend the extra 1 to 2K on a step down converter to make it 12V again for powering the rv.
