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Old 11-10-2020, 12:57 PM   #1
Rivet Master
 
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2019 26' Flying Cloud
Morristown , Tennessee
Join Date: Dec 2016
Posts: 681
Anecdotal CPAP, Portable Lithium experience

Just some purely unscientific observations that might help your boondocking plans.

I wanted a portable battery to power my CPAP overnight when not on shore power.
I purchased a Jackery 500 with 518Wh of available power. It comes with AC, DC, and USB ports.
I use a Resmed Airsense 10, and sometimes a heated hose for those cold nights. I also have a Resmed DC power supply connection.
This was my experience.

All uses were approximately 7 hours sleep.
AC power
With heated hose, used 76% of battery power.
Without heated hose, used 16% of battery power.
DC power
With heated hose, used 40% of battery power
With regular hose, used 14% of battery power

The Jackery was easy to use, charged within a few hours. When using AC, can sometimes hear a small internal fan, probably keeping an inverter cool.

You can see, with regular non-heated hose, I have several days capacity, and some left over for a laptop charge.

YMMV.
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Old 11-10-2020, 03:58 PM   #2
PlasticThingsHaveNoSoul
 
2020 27' Globetrotter
Idaho Falls , Idaho
Join Date: Sep 2018
Posts: 17
Thanks for posting your power consumption observations. I recently bought 2 of the Jackery 500's on sale along with the Resmed 12V DC converters for use if we get caught without shore power either intentionally or unintentionally.

My wife and I both use the Resmed Airsense 10 CPAP machines, and we conducted a test Sunday night using the 12V DC converters, heated hose (on), and humidifier (on). My usage was 9.0 hrs and I had 31% capacity left, my wife used her's for ~10 hrs and had 21% capacity left. I figured that we wouldn't get as much longevity out of the Jackery using it's built-in 110V inverter. I do have 240AH of Lithium and 400W of solar, so I can use the trailer's built-in inverter if needed and not worry too much about power.

Regards,
Ron
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