wademartin wrote:
Following suggestions from responses I have received, I have decided to go with a 200 watt kit with a 20 amp charge controller. I may have to add to my battery bank since my CPAP runs on 110 volts. Your responses were very helpful. Thanks to all of you.
Wade
Wade, seriously, if you're going to add more 12v batteries, re-think and think about changing to 6v. You can get 6v golf cart batteries at Costco or Sam's for about $80-90 each (last I looked), and cross-over cables are about $12-15 each. If you're going to go to 4 batteries, make 'em 6v and you'll have a =lot= more capacity, even if you take the other suggestions to heart. There was one post I read a couple years ago on here, from a =serious= boondocker, who has 6 2v batteries and a =lot= of solar, so was power-independent. Almost 1,000 lbs of batteries, though. :-)
Lyle