trackdude
Bucksport, Maine
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Joined: 09/30/2002
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Now for the $64K, marriage-saving question..................
I get another battery (which I've been thinking about anyway) and I want/need to use my trusty CPAP, how do I handle that?
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Irover
Where ever the Good Lord Wills
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Joined: 07/04/2010
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Doe your camper have an inverter? Find out the amp hour draw of the CPAP, then the amp hours of the battery! Say a battery has 105 Amps fully charged. Say the CPAP draws 5 amps per hour. 105 divided by 5==21 hours, but divde that by 2 cause a bateery is only suppose to be drawn down 50% ==10 & 1/2 hours before needing recharge. An inverter steps up 12v to 110-120 Volts. I would use a seperate battery for this use only and recharge with a seperate charger every 10 hours to be safe. I am not an authority on this, but should work. Irover
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afraid of bears
Prince George Area
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Joined: 10/16/2006
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trackdude wrote:Now for the $64K, marriage-saving question..................
I get another battery (which I've been thinking about anyway) and I want/need to use my trusty CPAP, how do I handle that?
Check to see if you can run your CPAP on 12 volt. You may be able to buy an adapter. I put a 12 volt outlet by the bed specifically for my machine. If I don't run the humidifier, my battery use is a lot less than with the humidifier on. With the humidifier, it would run my single 12 volt battery down to about half a charge. I now have a pair of six volts, and no problem.
**I tried the inverter route, but couldn't stand the sound of the fan on the inverter that went up and down as the CPAP machine ran.
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bananadanna
Cambridge, MA
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Joined: 11/30/2005
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We find that we like to run the furnace mostly when we're up and about. Sleeping under a thick down comforter generally doesn't require much furnace use until the temps are well under 20 degrees F.
So a little adjustment from shore power lifestyle is likely all you need. Extra batteries are always useful but maybe not required if you're a minimal boondocker.
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pnichols
Santa Cruz Mountains
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Joined: 04/26/2005
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We keep our RV furnace set to 65 degrees at night, but our RV is relatively small so the furnace can cycle ON/OFF to keep battery drain down.
We have two Group 29 size batteries and they'll easily handle two nights of furnace use and our other daily needs ... maybe three nights like this, but haven't tried it yet. However all our RV lighting is LED, which is a BIG battery saver.
Phil, 2005 E450 Itasca 324V Spirit
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