Cpap
5 Year Member
Joined: Mar 2017
Posts: 1,534
Likes: 507
From: South St. Louis county, Mo.
5 Year Member
Joined: Mar 2017
Posts: 1,534
Likes: 507
From: South St. Louis county, Mo.
CPAP - Continuous Positive Airway Pressure. Helps prevent sleep apnea by keeping your airway under pressure. I use one, as I suffer from both a soft palate deformity (birth defect) that causes obstructive sleep apnea and central sleep apnea, which is a neurological disorder. Yay me.
As mentioned, the 110VAC outlet only runs when the engine is on, so scratch that.
For everyone saying "it's just a big fan"... not really. The unit I use has variable pressure, sensors to determine if I'm entering an apneic state causing a pressure increase, a heater/humidifier to heat/humidify the air so you don't get a stuffy nose, and heated tubing to prevent rain-out. Those last two pieces really suck the juice. You don't have to use them... simply turn off the humidifier and use regular tubing... if you can stand the cold, dry air.
ResMed has a pretty good guide for sizing purposes:
https://www.resmed.com/us/dam/docume...de_glo_eng.pdf
Using the common AIrSense 10 Elite at 8cmH2O pressure with no humidifier, the current draw is 0.79A. Compare that to the same unit running 20cmH20 pressure, the humidifier, and the ClimateLine heated tubing at 5.61A. In the first case, a 10Ah battery is sufficient for 8 hours. In the latter, you'll need 68Ah of battery (that's larger than the battery in most F150s).
As mentioned, the 110VAC outlet only runs when the engine is on, so scratch that.
For everyone saying "it's just a big fan"... not really. The unit I use has variable pressure, sensors to determine if I'm entering an apneic state causing a pressure increase, a heater/humidifier to heat/humidify the air so you don't get a stuffy nose, and heated tubing to prevent rain-out. Those last two pieces really suck the juice. You don't have to use them... simply turn off the humidifier and use regular tubing... if you can stand the cold, dry air.
ResMed has a pretty good guide for sizing purposes:
https://www.resmed.com/us/dam/docume...de_glo_eng.pdf
Using the common AIrSense 10 Elite at 8cmH2O pressure with no humidifier, the current draw is 0.79A. Compare that to the same unit running 20cmH20 pressure, the humidifier, and the ClimateLine heated tubing at 5.61A. In the first case, a 10Ah battery is sufficient for 8 hours. In the latter, you'll need 68Ah of battery (that's larger than the battery in most F150s).
Thanks for the Info. I never even thought about the current draw until now. I use a Airsense 10 auto with ClimateLine Air heated tubing.
Wife was actually looking at RVs on facebook marketplace...
So maybe a RV will be in our near future. Time to get that trailer brake controller
Senior Member
Joined: Mar 2018
Posts: 647
Likes: 132
From: E TN
Might try one of the small 12v deer feeder batteries available at Academy Sports, etc. Kayaker's use 'em for powering their fish finder/gps units, will run a small 5-7" screen unit about 4-8 hrs. Can re-charge 'em with the charger. Smaller than a loaf of bread, sealed, no maint required.