Camping with Resmed S9

[barkinghills]

I've been a CPAP user for 6 months now. My family wants do go camping. I need a deep cycle marine battery to run my resmed S9. Any suggestions on what I should purchase?

[xenablue]

Sorry, I don't have a solution for you but quite a few on here have overcome the hurdles of using XPAP in a camping environment. I read them with interest in case I need a back-up plan if power fails.

Me? I'm old and crabby now, so we camp in luxury in our fully-equipped travel trailer - no more ground sleeping or tents for these ol' bones

Cheers,
xena

[Gerryk]

I have a respironics System one and I have the battery pack that respironics makes. I got it charged it and used it one night with my humidifier and still had power left. I do no know how much power was left because I charged it the next day. The charger indicated that the charge was low. However, this was the first charge so it may increase and once I go camping with it over night this weekend, I am going to try it the next night and see how long it lasts using the humidifier. The manufacturer told me with just my bipap at my setting is should run about 28 hours give or take but they did say the time would probably be cut in half or more if using the humidifier.

Good new is that when camping in the summer I shouldn't need the humidifier and if I do just using like a passover should be enough.

I am looking into a solar charger to use to charge this battery pack up. When I have time to make the phone calls and do the math I will post what I find out.

My machine is a 12 volt machine, I am not familiar with your machine but I heard that is was a 24 volt system. If that is true, you can't use the respironics battery pack.

CPAP.com sells a battery pack made by resmed for your machine but it is $700.00 but if you will use it more than a few times a year that isn't that bad considering you will have back up power for at home.

[RandyJ]

Check out this thread compiled by rested gal:

viewtopic.php?t=9682

[131]

I recently spent a couple of days in the south west of Tasmania for work, I ran my S9 with humidifier from a 38Ah battery using a 300w inverter. The first night the battery voltage had dropped enough for the low voltage alarm on the inverter to sound, I didn't hear it, but one of the other blokes in the room woke in a panic thinking I'd flatlined. The second night I had to swap batteries after 4-5 hours, not running the humidifier would probably have got me through the night.

[XSnorer]

I recall doing a bit of research a year or so ago on using my S9 with a 12V Deep Cycle battery and coming to the the conclusion that I needed a bit more than just a battery-- a converter maybe??? I also recall forming the opinion that if I needed emergency backup, or for camping use, it would be easier to connect the deep cycle battery to my older Respironics machine. I'm guessing the particulars of what would be required for the S9 is documented in the above post with the link as provided by RandyJ.

[chunkyfrog]

I wonder if I could put a modified sine wave inverter on a set of deep cycle marine batteries.
--like on a golf cart. Somebody did that a while back, I think.

[xenablue]

Indeed they did, chunkyfrog!

I remember that thread well but couldn't remember who it was so just searched "golf cart" - it was jazzy4.

Cheers,
xena