Jeff King's posts

Thanks SO much!

3A will be enough to charge both those batteries?

I assume to get more amps (closer to 5) I just add more panels to keep upping the volts (too a point the wire can support, of course).

Hello Everyone!

I have a small off-grid, low-amp (3-10) environment cabin, running 12v lights and charging cell phones only. No appliances, no radio...lights and charging only. So no major amp/power needs.

I'm currently using a 130w panel to charge 2 130 amp hour deep cell batteries..on site at the cabin. Works great! However, during the 4 winter months, I get no direct sunlight on the panels.

I do have a "sunny spot" on my property that gets sun all-year. However, the "sunny spot" is approx 400ft from my cabin (prob more like 360ft).

So,  I'm thinking that If I place 1 or 2, 24v panels in the "sunny spot" and run 10awg wire the 400ft, I figure I could get enough power. I have calculated an end voltage of 16.01 @ 10amps (this according to calculator.net/voltage-drop-calculator.htm).

I don't care about the loss of voltage, as I'm aiming for 12v anyway.

Question, does this seem right? AND could I then run that 16.01v through a properly rated 24v~12v charge controller to charge my 12v batteries on-site at the cabin?

Thanks!