ResMed Power Station II Battery (Backpacking)

I have an S9 Autoset with a Hi5 and I am looking at the ResMed Power Station II Battery kit (battery, DC Cable, PSU adapter) at 2-lbs seems like a viable solution, if I ditch my humidifier, I might get a couple of nights out of the battery. Looking to see if anyone has any good experience with this battery. Or if there might be a cheaper yet equally light solation for backpacking. Onces add up to pounds and pounds add up to pain in backpacking. Think 26miles 4-5 nights so a couple of batteries 4-lbs of batteries. Better eat light and pick a trail with lots of available water. Or if there is a Solar system I can attach to one battery that would be lighter combined weight than two batteries.

The other option would be a new CPAP aka a Transcend II. But once again does anyone have good info on battery duration and weight for the Transcend.

In short I am looking for any good proven solution for backpacking with a CPAP/APAP.

I am very interested in this as well. My husband has been dying to get us whipped into shape and start working up to backpacking. I hope that you give an update as to how it goes! I really hope someone has some insight for you.

There's a lot of us on here with a c-222 battery. If you do a search for "travel battery" on this site, there are a few threads with people running experiments with nights they were able to get.

viewtopic/t86960/Backpacking-amp-tent-camping.html
viewtopic.php?f=1&t=84976&st=0&sk=t&sd= ... 15#p778389

I too have a Res-Med at home.

I decided it was jut too valuable to take camping.

I purchased a smaller unit, a Transcend II with the multi night battery and soar panel.

My thoughts were, the multi night battery gives two nights at my pressure. So, .... I have a full charge the first night and can recharge some the next day and hopefully keep a charge for several nights.

When I camp it's always off the grid, so this works for me. It's also a smaller unit to fit in my pack. Total weight, about three and a half pounds.

Good luck.

Greg

The only problem with the solar panel charger that I can see is how are you going to be able to recharge the battery when you're on the move?

Can you post an image of the battery label and power brick of the Transcend? I want to see if there is a better option for a battery.

Well, I don't do big distances, so I am in camp long enough that I should be able to keep it at least half full.

It is a 14.4 volt, 5200 mAH, 75 wh battery. Will runs 17 hours on my pressure. So, I figuring I know I can get two nights cold w no charge. So if I get 5 or 6 hrs a day that is a half charge. So I'm figuring on it working. I ever go more than a few nights backpacking.

If I tried long distance, then it wouldn't work.

Greg

I wonder if a standard 14.4v laptop battery would work...

http://www.ebay.com/itm/14-4V-Battery-f ... 231d8fd6c9

Charging it would be more tricky.

I assume if you fitted it with the proper end / fitting it would, but I'm not too good with electronics.

Good idea though.

cosmo wrote:I wonder if a standard 14.4v laptop battery would work...

http://www.ebay.com/itm/14-4V-Battery-f ... 231d8fd6c9

Charging it would be more tricky.

Screw around with a non-standard charger on a lithium battery and safety circuitry will blow its fuse and never work again or it will burst into flames releasing toxic gases.

I have a few links to digest now. I am leaning towards the Transcend 2 solution. Since the S9 needs 24VDC that means with any battery solution other than theirs have to carry the 24VDC convert to go from 12V to 24V (ounces=pounds=pain). Might be able to design something smaller and more custom, I am an Electrical engineer, but that takes time.

I want to hike the East Rosebud trail from US 212 up to Fossil Lake again. I have done the entire 26miles from US212 to East Rosebud. However the side from Fossil Lake to East Rosebud burned out and was hot and more of a trudge than a hike with the lack of trees.

I've taken my old Respironics machine that draws about 2 amps with the humidifier unplugged on canoe trips and run it with a car battery - it lasted two and a half nights! I just bought a 60 Watt roll up solar panel on ebay and an 18 Ah electric lawnmower battery. I ran the machine for one night and then charged it in bright sun - took about three and a half hours. I then ran the machine for two nights on the battery - about 14 hours - and it ran fine. I charged it all afternoon on a cloudy day and it was not fully charged yet (I finished charging with a plug in charger). About to head out on a 4 day canoe trip! The solar charger was under $150 and the battery cost under $40 and weighs 11 pounds. Not for backpacking but fine for canoe trips. I'm working on a stack of NiMH rechargeable AA cells that should be a lot lighter. Not sure about Lithium batteries around water.