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RE: My Power Queen is here. She's a beauty....

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Oldbean2

In Reply to: RE: My Power Queen is here. She's a beauty.... posted by AbeCollins on June 22, 2023 at 11:16:24

I've been using deep-draw marine batteries and a quality inverter for CPAP power for many years; both as home backup, and for re-enactments (I hide the batteries and the CPAP in a reproduction army breadbox).

This looks like a much more elegant - and lighter - solution.

Back for a bit again. Ignore me if you like.

Follow Ups:

RE: My Power Queen is here. She's a beauty.... - AbeCollins 13:14:39 06/22/23 (0)
You don't NEED the battery box as it makes the whole setup more bulky but it does provide a nice selection of outputs and protection from the weather if used outdoors. You can also use a smaller capacity battery for a CPAP [maybe 20-Ah to 30-Ah] depending on whether you use the humidifier or not.
My wife's CPAP operates from 24vdc so I found a 12v-to-24v DC-to-DC converter with cigarette lighter style plug. There's a Resmed branded unit for use with her Resmed CPAP but I found an aftermarket version for 1/3 the price. We'll test it out this week.
DC to DC should be a little more efficient (less battery capacity wasted) vs DC to AC to DC using an inverter. But with a slightly larger battery it really should matter that much.
- 12v to 24v converter for CPAP (Open in New Window)
Edits: 06/22/23 06/22/23

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