Adding solar panel
I have a 5th wheel camper with two Exide Stowaway Group 27 Marine/RV batteries wired parallel that powers my 12 volt panel and connected to a 300 watt inverter that powers my CPAP machine, my satel...
Forum Discussion
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
Check to see if your CPAP will run on 12V (most do), then you can eliminate the inverter overhead. I have 2 different CPAPs and was able to find a 12v cable for each. Another idea to keep from depleting your house batteries is a 35AH sealed deep cycle battery to run your CPAP that you can charge independently. I haven't tried that, but it should be good for 2-3 nights with direct 12v.
Since most CPAPs run on 12v, the standard adapter converts 120v to 12v. When you use an inverter, you convert 12v to 120v, then back to 12v via the adapter to run the CPAP. Direct 12v makes so much more sense.
