CPAP Battery Packs?

I am looking for a CPAP battery pack such as the one CPAP.com puts out - however I am looking for one that is maybe USED or Second Hand. Does anyone have any HELPFUL advice as to where to look? I have done some searching online and only find new ones at around 375 dollars. This is outta my league right now and I really want to use it this coming month for a camping trip and in August for a missions trip where there is no pm electricity (electricity is on during select hours - sufficient for recharging)

I would appreciate any and all helpful advice
If you know of anyone who has one of these battery packs and doesnt want theirs for some reason, please let me know.

Thank you

There's more choices than the one you fond on cpap.com.

One that I've had success with is a rather generic device that's primarly meant for jump-starting car batteries. Got it at Costco a couple of years ago. Don't remember exactly what I paid, but it was under $100 -- probably around $60 or so. It has a 12-volt DC outlet (automobile cigarette lighter style), so if your CPAP can run directly from 12VDC, you're all set. The unit I have also has a couple of 120-volt AC plugs (just like at home) so that's available for running your CPAP also if it can't use 12VDC directly.

I used it while going to a scout camp, and I found that a full charge was sufficient to run my CPAP for 2 nights. So as long as I charged it at the camp's trading post (where they have power!) every day or two, I was all set.

Three additional points to keep in mind though...

1) When I first brought the unit home from the store, the battery was (as promised in the owners manual) completely uncharged. It took about 48 continuous hours of being plugged-in to the wall to charge it up. Don't wait until the day before your trip to go buy one of these!

2) For whatever reason, mine is designed such that it will recharge more quickly via the 12VDC connector than directly from the wall at 120VAC. I bought a small 120VAC-to-12VDC converter to take care of this, roughly $20. Gets the recharging done in maybe 50% of the time it would take otherwise. Might just be a design fluke in the one that I got, don't know for sure.

3) Don't buy one that's too small! If you get a tiny one, it'll cost much less, but it probably won't keep your CPAP running all night. (If it says on the box that it can jump-start a car "one or two times" on a full charge, that's too small.) Three or four (or more) is better; don't go too high though, or you'll need help carrying the thing!

OK, I lied. One more point: For goodness' sake, TRY IT OUT one night at home before you go on your trip. You want to make sure it works, and that you're comfortable operating & recharging it. Be sure to buy it from a place that has a decent return policy, so if it just doesn't handle your situation, you can get your money back.

$180 http://cgi.ebay.com/Battery-Backup-for-C...

A power inverter used from the car cigarette lighter outlet may work also...but you might STILL have to run the vehicle at times for that.

This is a great question, I have a c-pap and never heard of a battery back up...always tried to use a power inverter or indoor outlet.

Cpap Battery packs(small and lightweight) are very new to the industry so there is your dilema.
Therefore they are expensive to manufacture.
Where are you located?
Have you searched auctions online?
Check out the battery pack on CpapRx.com.
Good luck!