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Old 05-02-2016, 10:34 PM   #11
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Originally Posted by dig4gold View Post
First of all . . . it's CPAP, and it doesn't have batteries. It's 120v. Unless my 5er has a power converter to go from 12V to 120V . . . I don't see where your math does me any good. Thanks for all your trouble and advice though.
I use a CPAP all the time and never run a generator at night. Some CPAP's have a 12 volt converter available. Even if you have a standard 120AC unit, there is no reason that you can't use a plug in inverter to power your CPAP off of your 12 volt batteries. If you disconnect the humidifier, they only draw about 80 watts.
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Old 05-03-2016, 12:12 AM   #12
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Originally Posted by Ela1948 View Post
I use a CPAP all the time and never run a generator at night. Some CPAP's have a 12 volt converter available. Even if you have a standard 120AC unit, there is no reason that you can't use a plug in inverter to power your CPAP off of your 12 volt batteries. If you disconnect the humidifier, they only draw about 80 watts.
X2, my CPAP has a 12V option. I can run mine off a 12V deep cycle battery with no issues. I played with it, but not done it. I camp without mine. I know some people who do. If I recall correctly they can go a couple nights on a single battery charge on a dedicated battery.

But back to your original question. If you are running a genny all night, a cheap group 24 dual purpose battery would work for you.
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Old 05-03-2016, 06:39 AM   #13
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Originally Posted by dig4gold View Post
First of all . . . it's CPAP, and it doesn't have batteries. It's 120v. Unless my 5er has a power converter to go from 12V to 120V . . . I don't see where your math does me any good. Thanks for all your trouble and advice though.
Unless it is a new design that the 110VAC plug goes directly into the CPAC machine, it has an inline transformer that plugs into the CPAC machine. I have yet to see a CPAC machine that is wired directly to110VAC, but anything is possible.

What is the mfr/model of your machine.

Don
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