Forum Discussion
Downunda
Nov 12, 2018Explorer
My understanding is that CPAPs don't require a lot of power so a simple solution is to purchase a suitably sized inverter (say 600W for example) for the CPAP only and install it under the bed. The smaller inverter when turned on and with no load uses almost no power and won't drain your batteries like your coach fitted unit.
"At a 10 cm water pressure setting a CPAP which draws 2.5 amps would need 20 amp-hours in 8 hours. Therefore, the battery should be at least 35-40 ampere hours to support one night of sleep. At a 20 cm water pressure setting a CPAP which draws 4.5 amps would need 36 amp-hours in 8 hours.
Battery Operation of CPAP Devices for Sleep Apnea Treatment, Part 3 ...
www.newtechpub.com › sleep › power03"
"At a 10 cm water pressure setting a CPAP which draws 2.5 amps would need 20 amp-hours in 8 hours. Therefore, the battery should be at least 35-40 ampere hours to support one night of sleep. At a 20 cm water pressure setting a CPAP which draws 4.5 amps would need 36 amp-hours in 8 hours.
Battery Operation of CPAP Devices for Sleep Apnea Treatment, Part 3 ...
www.newtechpub.com › sleep › power03"
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