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DC to AC Pure Sine Wave Power Inverter for Resmed S8 Machines

BY Aims Corporation  |  Item #PWRI30012S
(14) Read Reviews

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Overview of CPAP DC Cables and Batteries
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Resmed S8 DC-AC PSW Power Inverter

This is a pure sine wave DC to AC power inverter. Use this device to provide clean AC power to any CPAP.

Resmed S8 DC-AC PSW Power Inverter

This is a pure sine wave DC to AC power inverter. Use this device to provide clean AC power to any CPAP.

Learn More About This Product

ResMed S8 machines with a Humidaire heated humidifier are required to use a pure DC-to-AC power source. The Humidiare humidifier is disabled when using the DC-12 Converter For S8 Machines.

An inverter converts DC battery power to AC wall power. ResMed humidifiers can become damaged if the battery power is not inverted into a clean AC power source. Most inverters do not generate a pure signal from a DC battery and the Humidaire heated humidifiers are susceptible to power spikes. The 'Pure Sine' refers to a signal wave with controlled peaks and dips. Power signals that rise or fall erratically are dangerous to electronics.
The use of any inverter will reduce the battery life up to 50% because the inverter, itself, uses battery power.

You will not need this equipment if you are just powering the ResMed S8 machine. Use the 400 Watt DC to AC Power Inverter or similarly basic inverter with a minimum of 150 Watts continuous when not connecting the Humidiaire heated humidifier.

The Pure Sine Wave Inverter will not work with the CPAP.com Battery Pack. Please visit our Power and Batteries section to select an alternative DC battery source. If you want to use a battery and need a means of charging the battery while camping outdoors, use the 400 Watt DC to AC Power Inverter.

The Pure Sine Wave Inverter is not recommended for most machines. Equipment like the Respironics M series and ZZz-PAP machines will use the simpler 400 Watt DC to AC Power Inverter .
What type of power does my CPAP need?
Most CPAP, APAP and BiLevel machines today are designed to operate on both AC and DC voltage. In the United States, the AC current from a wall outlet is 110 volts. Overseas, the AC current is usually 220 or 240 volt. Most batteries produce 12 volt DC current.

We include information about the power needs and capacities on the CPAP.com pages our products. Please see the "POWER" tab on any machine product page for this information. You can also see a summary of the voltage range and whether it is DC capable on our Compare Charts.

Here is a video explaining differences in power cords and power supplies of various CPAP machines:

Will my CPAP operate on DC / battery power?

All CPAPs will operate on DC power with the use of an Inverter to change the current from DC to AC before it reaches the machine. However, many will operate on DC power without the need for an inverter, just a power cord that plugs into the CPAP and ends in a cigarette lighter plug.

Inverters do require a lot of power. If you need to use an inverter to run your machine on battery power, the inverter will probably take about half the life off the battery.

To determine if your CPAP will operate without an inverter, look for a DC outlet on the machine, either at the back or on the side, with a single opening directly in the center. It should be labeled "DC POWER" or similar term. You can also review our Compare Charts to see if your machine has a optional DC cable option.

Here is a video describing different DC cable and battery options for various machines:

 
Will my CPAP operate overseas?
An adapter may be required to plug a US power cord into a wall outlet in a foreign country. CPAP.com sells an assortment pack of World Traveler Power Adapter Plugs, which allow CPAP machines to plug into different types of wall sockets found in different countries.
All the models CPAP.com sell contain power converters that enable the machine to operate on any AC current from 100 to 240 volts without any adjustment.
How do I use a battery to operate my CPAP?

All machines can connect to DC power. Some machines are configured to operate on DC Power and have a DC power outlet. Other machines require AC power and will need an Inverter that turns DC power to AC power.


Having the proper equipment is the biggest key to successfully operating the machine from a battery. For example, if your machine does have a DC outlet and you want to run your machine from a marine battery, be sure to get the correct DC cable for the machine, as well as an adapter cable with alligator clips that fits over the cigarette lighter plug.


CPAP.com sells complete battery kits with everything you need for many machines including the correct cables for those machines and batteries. If you have questions about the specific power needs of your machine, review the 'Power' tab found on the machine's product page, or give us a call at 1-800-356-5221.

What type of battery should I use?
For longer battery use, we suggest using a deep-cycle marine battery to power the machine. A deep-cycle marine battery is heavier than the ordinary battery, but it has many advantages. The battery is easily found at auto shops and it provides power to the machine for an extended period of time. For example, a CPAP machine set at 10 cm H20 and charged on a deep-cycle marine battery will usually last three nights before it needs to be recharged.

There are small, portable battery packs that will operate a CPAP set at 10cm for at least one night, or about eight hours. CPAP.com sells full Battery Kits that come with everything needed to run your machine off battery power including the correct cables needed for your machine and a battery. You can find the battery kit for your machine Here. On each battery kit page, you can input your machine and pressure setting to see an estimate battery life for your machine.

Some machines have batteries created to be used specifically with them only. Here are some of the machines we carry with integrated or specialized battery options:

Transcend EZEX miniCPAP™ Machine
Z1 Travel CPAP Machine
Transcend Auto miniCPAP™ Machine with EZEX
Z1 Auto Travel CPAP Machine
How do I prepare for power outages with CPAP?
There are a lot of back up battery choices out there that can give you peace of mind in case of a power outage. The Transcend Travel CPAP Machine has Battery Options available that can set up as a fail-over, back up battery. Review the 'POWER' Tab on the machine page.

CPAP.com sells Battery Packs to accompany your machine if an integrated battery is not available. Visit CPAPtalk for more advice specific to your needs, or view this past thread on the topic here.

CPAP.com 100% Price Protection Guarantee

When you shop with us, we want you to be confident that you are receiving the best available price. If this items goes on sale or you spot an online or retail competitor with a lower price within seven days of your purchase, let us know, and we will credit you the difference.

"Super helpful, fast shipping, friendly assistance, great selection, I love this company."

- Verified Customer, 10/25/22

★★★★★

(14)  

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★★★★★

It worked well

Verified purchase | Sep. 25, 2012 | Verified CPAP.com Customer
I don't have an oscilloscope, so I didn't test its claim to produce a "pure sine wave" but this product powered my CPAP device and heated humidifier for two nights while camping.
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★★★★★

Back country here I come

Verified purchase | Jan. 28, 2012 | Verified CPAP.com Customer
I cannot wait to go to the back country now that I have a way to power my newly purchased battery pack. Traveling will be so much nicer now that I have this option.
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★★★★★

Verified purchase | Aug. 28, 2011 | Verified CPAP.com Customer
The machine works great however the 12V ability via the RV we have didn't produce enough juice.
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★★★★★

Verified purchase | Jul. 20, 2011 | Verified CPAP.com Customer
Worked excellent on a five day camping trip in a pop up camper using a 12 volt deep cycle battery. Did not use the humidifier this time.
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★★★★★

Inverter

Verified purchase | Mar. 29, 2011 | Verified CPAP.com Customer
The inverter was what I was looking. Thanks
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★★★★★

Exactly as advertised!

Verified purchase | Dec. 11, 2010 | Verified CPAP.com Customer
I run my Inverter while camping from a 12V/20 amp deep-cycle electric scooter battery that weighs about 13 pounds. I get just about two nights of CPAP use from this setup before I have to recharge the battery with a Battery Minder / conditioner. Everything fits into my CPAP travel case (without the humidifier - which is a power hog anyway.)
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