(10-22-2014, 08:12 PM)LJones Wrote: I had my 45 day checkup today. Everything looks good. However, I am not happy with my AHI hovering at times near 5. The doc gave me permission to bump up the pressure on my machine. Since it is an auto they are not worried about it. I am compliant, but they say the insurance will not buy the machine for me for several more months... So, that leads to my dilemma.
I am planning on moving to Mexico in December. Doing such will cancel my insurance. I am willing to buy a machine. I have a Respironics 760 Auto. I have found one on a reputable resell site for about $650. Is this a good idea? I am going to check with the rental place first to see what they would sell this one for.
Another issue will be that we will not have electricity in Mexico. I will have a solar station to charge batteries. Are the batteries for these things ok?
Sometimes you have the option to buy earlier with your insurance. If not, you might talk to the DME (CPAP seller) and ask if they'll make a deal on your unit.
You can also look for people selling machines on Craigslist, but I don't usually see good bilevel machines for sale. Be sure to get a good data capable machine.
You can do solar, but it's harder than it looks at first. If you buy, for instance, a 100W panel, it's only 100W on a clear day, at noon, and with the panel tilted at the proper angle to the south. Because the sun moves, and changes position through the seasons, you only get a certain number of equivalent hours of sun each day. You also need a location where the panels are in the sun all day.
Then you need a big enough battery to last through enough cloudy days to keep you going. You need a good charge controller to properly charge the batteries.
If you use a PRS1 Respironics machine, you can use DC power directly. This will be more efficient in terms of power usage. With ResMed, you need to buy the ResMed DC to DC converter, which will be more efficient than using a DC-AC inverter and the regular power supply.
However, if your sleeping position isn't near the solar panel, you may want to use an inverter, because it's inefficient to "pipe" 12V power around vs. 120V power.
You probably need a fairly large solar panel to keep the CPAP going. Probably something like 60 watts.