Hey Everyone Last fall I was diagnosed with sleep apnea. I had a really bad case of it. Using a CPAP machine made me feel better then I have in years. I use to sleep 45 at a time. And I would wake up feeling worse then I did when I went to sleep. I was a horrible mess. But thanks to the CPAP machine I feel like a million bucks. As late winter arrive I started to think about riding, camping and spending time off the beaten path and I got sad. No plug, no CPAP, and no breathing/sleep. I was devastated that I would not be able to camp off the beaten path. I hate campgrounds. So I started to research options for powering the machine. People had all kind of solutions to this issue. The popular one is running the CPAP off a small jump box. People say they can get 3 nights off a small jump box. This looked like what I was going to do. But two things got in my way. 1. I am a KLR650 owner. This makes me a cheap old bastard. So buying a jump box was out of the question. 2. Space. I already travel with enough crap. I didn't want a heavy old jump box too. So I took the cheap route. I went to radio shack and bought some parts to make this. On one end is a Battery tender cable. The other is the connector that goes into my machine (sizes vary, so take your machine to Radio Shack to confirm buying the correct size). My machine runs on 12volts. The house power cord steps it down to 12v. I am told almost all the machine run on 12v. It will be written on the power cord. I soldered the battery tender cord to the new plug making sure positive was in the center. And that its. I made mine very small. But you can make yours as long as needed. A battery tender cable from any bike shop is 6" or so. So you will only need to buy the machine end at Radio Shack. I wanted extra length. So I bought a Battery Tender extension cord off ebay. Its 25" long. Its good for many things besides charging your battery. I use it to run power to my tent for many things. I power the CPAP, phone, iPad and charge my scala. If you're stuck in the tent all day on a pouring hard rainy day, its nice to have iPad power to blog, edit pictures or just look at porn. So far I have nothing but luck with my set up. My first camping trip was at Skyclad's Southern York and Lancaster County Tour and camping trip. The first night I slept 10 hours powering the machine off my KLR650. I wanted to over test it when I had plenty of people to jump start me in the morning( I went to bed real early, I couldn't wait to test it). I was not sure what was going to happen. I assumed the battery would be almost dead after 10 hours with the machine going. But my LED battery monitor was still in the green when I woke up. And the bike started with no issues. Since then I have camped about a dozen nights. And every time I woke to a green light on the bike. And every time I used the CPAP machine to even pump up my air mattress. It does a good, quick and silent job on the mattress.... All in all the new cables don't take up much more space then the house cord. And the house cord can stay home if you are running off the bike. And this cord gets to do more things. Its a cheap, small solution. I know a few of you out there have this issue. I hope this helps you. It really helped me enjoy my summer. Cheers!!!