camping with CPAP (no electric hookup)
We would like to go to some places this summer with our travel trailer that don't have electric hookups but my son needs his CPAP for sleeping during the night. I was wondering if anyone had suggesti...
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Be careful using modified sine wave inverters with older CPAP machines. ResMed has a battery guide for using inverters and deep cycle batteries on it's web site with the following information:
Using an Inverter
While we recommend using DC-to-DC converters, if you must use a DC-to-AC inverter, you can do so with some
ResMed devices. The following questions step you through identification of the appropriate battery for use with a
DC-to-AC inverter to power your ResMed device. We recommend using a pure sine wave inverter with a continuous power rating of 300 watts and a peak/surge rating of 500 watts.
WARNING: We recommend only using an inverter certified by an accredited testing and certification organization,
such as VDE, TSU or BSI in addition to CE markings for EU countries or UL markings for the USA.
NOTE: The steps in this section apply to the following ResMed products: S9, VPAP III, AutoSet CS2, VPAP
Adapt series used with appropriate humidifiers (HumidAire 2i, H4i, or H5i only). These steps also apply to the
Stellar series.
1. Do you have a pure sine wave DC-to-AC inverter with a continuous power rating of 300 watts and a
peak/surge rating of 500 watts?
• YES – Go to step 2.
• NO – Contact your battery or electrical supplies provider for assistance in obtaining the appropriate type
of inverter.
NOTE: The following ResMed devices without humidifiers can operate using a 150 watt modified sine
wave inverter: VPAP III, AutoSet CS2, VPAP Adapt series. S9 series with H5i humidifiers can also
operate from this inverter type.
2. If required, do you have a cable adapter to connect your DC-to-AC inverter to a battery?
• YES – Go to step 3.
• NO – Obtain an appropriate cable adapter from your home medical equipment or battery provider. Got to
step 3.
3. Do you know the treatment pressure set on your device?
• YES – Go to step 4.
• NO – Contact your home medical equipment or healthcare provider and request your treatment pressure
then go to step 4.
4. Go to the Inverter “Battery Tables” section and locate the appropriate table for your device.
Locate your treatment pressure (or next highest value) in the table and read across to identify the required
battery size in amp hours (AH). This is the size battery you will need to operate your device for 8 hours.
Please be aware of the following related to use of inverters with ResMed products:
WARNING:
• Other ResMed heated humidifiers must not be used with inverters. Damage to the unit or serious injury to
the user may result. If you are using another brand of heated humidifier, check with the manufacturer for
their recommendation.
• The original HumidAire™ must not be used with inverters.
CAUTION: Do not use the C-Series Tango heated humidifier with an inverter. This humidifier can only be used on
mains AC power, not battery power.
Using an Inverter
While we recommend using DC-to-DC converters, if you must use a DC-to-AC inverter, you can do so with some
ResMed devices. The following questions step you through identification of the appropriate battery for use with a
DC-to-AC inverter to power your ResMed device. We recommend using a pure sine wave inverter with a continuous power rating of 300 watts and a peak/surge rating of 500 watts.
WARNING: We recommend only using an inverter certified by an accredited testing and certification organization,
such as VDE, TSU or BSI in addition to CE markings for EU countries or UL markings for the USA.
NOTE: The steps in this section apply to the following ResMed products: S9, VPAP III, AutoSet CS2, VPAP
Adapt series used with appropriate humidifiers (HumidAire 2i, H4i, or H5i only). These steps also apply to the
Stellar series.
1. Do you have a pure sine wave DC-to-AC inverter with a continuous power rating of 300 watts and a
peak/surge rating of 500 watts?
• YES – Go to step 2.
• NO – Contact your battery or electrical supplies provider for assistance in obtaining the appropriate type
of inverter.
NOTE: The following ResMed devices without humidifiers can operate using a 150 watt modified sine
wave inverter: VPAP III, AutoSet CS2, VPAP Adapt series. S9 series with H5i humidifiers can also
operate from this inverter type.
2. If required, do you have a cable adapter to connect your DC-to-AC inverter to a battery?
• YES – Go to step 3.
• NO – Obtain an appropriate cable adapter from your home medical equipment or battery provider. Got to
step 3.
3. Do you know the treatment pressure set on your device?
• YES – Go to step 4.
• NO – Contact your home medical equipment or healthcare provider and request your treatment pressure
then go to step 4.
4. Go to the Inverter “Battery Tables” section and locate the appropriate table for your device.
Locate your treatment pressure (or next highest value) in the table and read across to identify the required
battery size in amp hours (AH). This is the size battery you will need to operate your device for 8 hours.
Please be aware of the following related to use of inverters with ResMed products:
WARNING:
• Other ResMed heated humidifiers must not be used with inverters. Damage to the unit or serious injury to
the user may result. If you are using another brand of heated humidifier, check with the manufacturer for
their recommendation.
• The original HumidAire™ must not be used with inverters.
CAUTION: Do not use the C-Series Tango heated humidifier with an inverter. This humidifier can only be used on
mains AC power, not battery power.
