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Boundary Waters Quetico Forum :: Listening Point - General Discussion :: Battery for cpap
 
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Northwoodsman
07/07/2020 09:52AM
 
I have both the ResMed AirSense 10 and the ResMed Mini. I had a battery set-up but I sold it to another member on this board earlier this year. I couldn't get more than 3 nights out of two batteries linked together with everything turned off and the pressure dialed down to as low as it could still be semi-effective. Do NOT count on solar for recharging in the BWCA. I'm not an expert on the batteries but I will offer some pointers on the two CPAP's. If you use the ResMed 10 put it in airplane mode, buy a plug (end cap) so you don't have to lug the water chamber with you, and do NOT use the ClimateAir hose, even if you turn it off. The machine will recognize it and keep the functions activated and draining the battery. Buy a generic hose without the electrical connection on the end. At home my pressure runs around 14.4-14.6, I found in the woods that I could live with 10. I would consult your doctor to determine if this is safe for you or not. This reduces battery consumption significantly. The Mini is only compatible with two masks, neither which I find comfortable. The Mini is loud! Not the machine itself but the exhale relief and overflow air release. It's not that ResMed recommends only two masks but they use a proprietary hose for the Mini that only connects to two models of masks. I use the mini because I travel a lot for work, and got tired of lugging the case around for the AirSense 10. I wouldn't spend the money to purchase it again. I find that I can go for a few nights in the BWCA without a CPAP, I guess it's the cool, humid, fresh air and smell that does it.
 
Mickeal
07/12/2020 06:12AM
 
ExpertPower 12v 33ah Rechargeable Deep Cycle from Amazon is what my friend carries and a foldable solar panel. Has never had a problem.
 
4keys
07/12/2020 07:54PM
 
Northwoodsman: "I have both the ResMed AirSense 10 and the ResMed Mini. I had a battery set-up but I sold it to another member on this board earlier this year. I couldn't get more than 3 nights out of two batteries linked together with everything turned off and the pressure dialed down to as low as it could still be semi-effective. Do NOT count on solar for recharging in the BWCA. I'm not an expert on the batteries but I will offer some pointers on the two CPAP's. If you use the ResMed 10 put it in airplane mode, buy a plug (end cap) so you don't have to lug the water chamber with you, and do NOT use the ClimateAir hose, even if you turn it off. The machine will recognize it and keep the functions activated and draining the battery. Buy a generic hose without the electrical connection on the end. At home my pressure runs around 14.4-14.6, I found in the woods that I could live with 10. I would consult your doctor to determine if this is safe for you or not. This reduces battery consumption significantly. The Mini is only compatible with two masks, neither which I find comfortable. The Mini is loud! Not the machine itself but the exhale relief and overflow air release. It's not that ResMed recommends only two masks but they use a proprietary hose for the Mini that only connects to two models of masks. I use the mini because I travel a lot for work, and got tired of lugging the case around for the AirSense 10. I woouldn't spend the money to purchase it again. I find that I can go for a few nights in the BWCA without a CPAP, I guess it's the cool, humid, fresh air and smell that does it."


Things they don't tell you about or put in their literature...end cap, generic hose with no electrical connection... I did see the 2 choices of mask for the mini and wasn't thrilled about them. I found out my clinic does not carry the mini, so I would need to get a prescription to order it from another company, and I don't have time before my trip. And who would buy a cpap just for the fun of it anyhow? So for this trip I am going without, maybe my snoring will keep the Bears away.
 
4keys
07/12/2020 08:35PM
 
Mickeal: "ExpertPower 12v 33ah Rechargeable Deep Cycle from Amazon is what my friend carries and a foldable solar panel. Has never had a problem. "


Not sure if I'm looking at the same battery that your friend used - 7x 6x 5 and 23 pounds? Plus the weight of a solar charger and cpap? My pack is heavy enough, no way could I add that battery too. Glad it works for him.
 
4keys
07/12/2020 08:20PM
 
Nigal: "Have you ever tried any of the oral appliances (mouth guard)? I can’t afford a portable cpap so I’m going to try the Snore RX to see if that can get me through a week. "


Interesting. Theis looks similar to what my doctor wanted to send me to a dentist for. Custom molding etc, although I really didn't ant to get a cpap, I was also not thrilled with moving my jaw around every night. Hope this works for you.
 
Nigal
07/08/2020 07:28AM
 
Have you ever tried any of the oral appliances (mouth guard)? I can’t afford a portable cpap so I’m going to try the Snore RX to see if that can get me through a week.
 
Northwoodsman
07/12/2020 09:43AM
 
Nigal: "Have you ever tried any of the oral appliances (mouth guard)? I can’t afford a portable cpap so I’m going to try the Snore RX to see if that can get me through a week. "
I believe that these type of devices only work if you have obstructive sleep apnea. I have both obstructive and central sleep apnea. Central is where your brain forgets to take a breath, this is the one that is the most dangerous. Even with my CPAP this happens to me 2-3 times per night. Do you know which type of apnea you have?
 
4keys
07/12/2020 08:35PM
 
Mickeal: "ExpertPower 12v 33ah Rechargeable Deep Cycle from Amazon is what my friend carries and a foldable solar panel. Has never had a problem. "


Not sure if I'm looking at the same battery that your friend used - 7x 6x 5 and 23 pounds? Plus the weight of a solar charger and cpap? My pack is heavy enough, no way could I add that battery too. Glad it works for him.
 
4keys
07/07/2020 07:13AM
 
Thanks for the info and links. I did not come across that before. The lithium battery I had found would provide only 14 hours of charge even with no humidifier, (and the mini does not even have a humidifier) and it looked like people were having trouble recharging it with solar. It's always a balance between charge - weight- cost.

 
4keys
07/06/2020 11:59AM
 
I'm looking for information before I purchase a travel cpap machine. Most of the info I've found is a few years old, so I'm looking for more current info.

I have a resumed air sense 10 now, and am looking at the mini for camping. The big issue, of course, is the battery life. I need something for five nights for this trip. What batteries work best? Worst? How do you recharge the batteries? And, of course, I'm looking at something that does not weigh too much!

 
jdoutdoors
07/06/2020 07:00PM
 
Here is ResMed's battery guide: https://www.resmed.com/us/dam/documents/products/serviceandsupport/battery-guide/198103_battery-guide_glo_eng.pdf


It looks like an AirSense 10 consumes something like 1A @ 12V if you don't use the humidifier. This is pretty low actually and means you could actually do 5 nights without recharging. For 5 nights at 8 hours per night, you'd need roughly 40Ah. Add let's say a 50% margin to be safe and you need 60Ah @ 12V.


To get the LIGHTEST possible option for the capacity that you'll need, you'll want to go lithium ion (Li-ion) or lithium iron phosphate (LiFePO4). I have a 30Ah LiFePO4 battery for my fish finder that weighs a little over 6lbs. I have a 35Ah AGM battery that I bought a few years ago that weighs something like 20lbs. The lithium batteries are the real deal, and the bonus of LiFePO4 is that you can discharge them basically all the way (not quite but around 95% is fine).


My 30Ah is from Amped Outdoors, which is a one man company in Hudson, WI, and I have met him in person at an ice fishing expo. His goal was to provide the most capacity in the most reliable product at the lowest possible price. He knows a lot about power and I trust him. His prices are pretty excellent - I highly suggest you shoot him an email and talk to him if you are in doubt. The batteries aren't cheap compared to heavy sealed lead acid (SLA) batteries, but those are not an option if you're bringing them into the backcountry, for the kind of capacity you need. You'd be bringing a 70lb battery.


60Ah LiFePO4 battery from Amped Outdoors - $360, 13lbs7oz


He also sells 10A chargers that will charge these big boys up entirely overnight for a pretty reasonable price. I have had no issues with mine yet. You can get that 60Ah battery with the 10Ah charger for $395.


The caveat is that you need a battery box with an inverter to power your CPAP, or you can probably output DC directly to avoid the AC adapter, though I'd consult ResMed on that just to be safe. If you want a completely integrated solution, Jackery sells a 1000W power bank, which is 83Ah @ 12V and weighs 22lbs. This should be plenty for you, but the cost is much, much higher - $1000 for the bank, which has an inverter built in. The integrated package is attractive, but for $600 more than the Amped battery, it's a tough sell. You could build a battery box with an internal inverter for no more than $250 for the Amped battery, putting you around $650 compared to $1000. Someone could build one for you if you are uncomfortable with the wiring aspect though that will likely add cost as well.


I hope this helps! No matter the solution, it won't be cheap, but the battery tech available today actually makes it possible to bring a CPAP into the wilderness without having a 60-100lb block of lead along for the ride.