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[GMCnet] Re: need a cheap quiet inverter to run a CPAP [message #364911 is a reply to message #364909] Tue, 22 June 2021 19:33 Go to previous messageGo to previous message
Gerard Hickey is currently offline  Gerard Hickey   United States
Messages: 53
Registered: June 2019
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Most CPAP machines have an option to run on 12V and it will actually be
much more efficient to operate on 12V than it would to convert 12V to
120V and then back to 12V. You loose power at each conversion as it is
converted to heat.

For the money that you would pay for an inverter you will probably find
the 12V cable.

My girlfriend uses a Phillips CPAP and I spent $60 for the 12V cable.
Now it just plugs in to a cigarette lighter plug instead of having
several cables/boxes and trying to find room for all the additional stuff.

--
Gerard Hickey / WTØF IRLP:3067/Echolink:529661
hickey@kinetic-compute.com DMR: 3102272
425-395-4554 Allstar: 531920

On 6/22/21 5:04 PM, Burl Vibert wrote:
> The problem with some inverters is that they shut off at low DC voltage so might not give you as much time as you'd think if you can't recharge the
> battery.
> I have a 300W inverter like that and it's a PITA depending upon your situation and battery.
>
>
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