CPAP Masks
CPAP Machines
CPAP Supplies
CPAP Accessories

Home Sleep Test

Blog

We're here to help! Call 1.800.356.5221

M-F 8AM-8PM | Sa 8AM-5PM (CST)

Take 20% Off

your next order!

Join Today!

400 Watt DC to AC Power Inverter

Name: 400 Watt DC to AC Power Inverter
Brand: Aims Power
SKU: PWRINV400W
Price: 49.99 USD
Availability: InStock
Rating: 4.5 (9 reviews)

BY Aims Power Item #PWRINV400W

$49.99

9 Reviews

PURCHASE OPTIONS

One Time Purchase

$49.99 ea

Subscribe & Save 10%

$44.99 ea

+ FREE SHIPPING

Order ships next business day

400 Watt DC to AC Power Inverter - Shown with Cords

400 Watt DC to AC Power Inverter - In Box

400 Watt DC to AC Power Inverter - Without Cables

400 Watt DC to AC Power Inverter - Outlet End

Item 1 of 3

Click image to expand

$49.99

9 Reviews

PURCHASE OPTIONS

One Time Purchase

$49.99 ea

Subscribe & Save 10%

$44.99 ea

+ FREE SHIPPING

Order ships next business day

400 Watt DC to AC Power Inverter Overview

Compatible with several CPAP machines from popular brands like DeVilbiss, the 400 Watt DC to AC Power Inverter features a power inverter and battery pack.

Learn More About the 400 Watt DC to AC Power Inverter:

Wide Compatibility Across Multiple CPAP Machine Options
Designed to Prevent Overcharging and Short-Circuiting
Convenient Multi-Colored Display Shows Your Battery Charge Status
Help Kit Last Longer By Adhering to Temperature Storage and Battery Charging Suggestions

Features

Important Tips

Videos

FAQs

Customer Reviews

Wide Compatibility Across Multiple CPAP Machine Options

The following CPAP machines are compatible with this kit:

DeVilbiss RPM AutoAdjust CPAP
DeVilbiss RPM Bilevel
DeVilbiss RPM CPAP Machine
Orion CPAP Machine
PureSom CPAP Machine
SleepStyle 233 CPAP Machine with Built In Heated Humidifier
SleepStyle 234 CPAP Machine with Built In Heated Humidifier
SleepStyle 238 CPAP Machine with Built In Heated Humidifier
SleepStyle 242 CPAP Machine with Built In Heated Humidifier
SleepStyle 244 CPAP Machine with Built In Heated Humidifier
SleepStyle 254 Auto CPAP Machine with Built In Heated Humidifier
SleepStyle 604 Thermosmart CPAP Machine with Built In Heated Humidifier
SleepStyle 608 Thermosmart CPAP Machine with Built In Heated Humidifier
Zzz-PAP 'Silent Traveler' CPAP Machine
Zzz-PAP Auto CPAP Machine
ComfortPAP Auto 804 CPAP Machine
SleepEasy CPAP Machine with Built In Heated Humidifier
SleepEasy II CPAP Machine with Built In Heated Humidifier and C-Flex

Designed to Prevent Overcharging and Short-Circuiting

The 12v charger is designed to charge a sealed, lead-acid battery while protecting the system from overcharging. The battery pack can be charged with an AC current between 100v and 240v, which provides protection against short-circuiting. Keep in mind that using these products with a heated humidifier will significantly reduce the battery run time.

Convenient Multi-Colored Display Shows Your Battery Charge Status

It takes approximately 10 hours to reach a full charge, and multi-colored status lights show you the status of your current battery charge

Help Kit Last Longer By Adhering to Temperature Storage and Battery Charging Suggestions

For optimal performance, charge the battery fully before using and keep the charge level above 20 percent. The optimal storage temperature for this product is around 77 degrees.

What’s Included:

One 400 Watt DC to AC Power Inverter
One Respironics Battery Pack (No DC Cable)

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.

Overall Rating

4.5 9 Reviews

Verified Customer

Verified purchase

2021-04-26

Inverter worked

The inverter worked as described. Would purchase it again.

- Verified Customer

Verified Customer

Verified purchase

2018-05-13

400 watt dc inverter

worked very well. Ran my CPAP machine wonderfully. Well worth the price.

- Verified Customer

Verified Customer

Verified purchase

2013-05-01

Power Inverter

Great. Just what I needed to recharge my cpap lithium ion battery.

- Verified Customer

Verified Customer

Verified purchase

2011-11-10

Inverter

Product feels high quality, power switch, and works well. It comes in a hard carrying case. I have read people complaining about fan noise, but the fan doesn't seem that loud to me. I also like that can use the CPAP battery to power other small devices in a power failure if needed and that this device allows you to charge your CPAP battery from the car.

- Verified Customer

Verified Customer

Verified purchase

2011-06-18

Camping

Just came back from a two-day car camping trip in Big Sur. I charged the battery back to full power after the 1st night while driving around Big Sur using the Power Inverter. No problems with either the inverter nor the battery pack.

- Verified Customer

Verified Customer

Verified purchase

2010-07-14

Received product in a timely manner. This could be my fault, but I thought this product had some kind of bracket for mounting it to a panel. That was my only disappointment. Have not applied this to the project yet.

- Verified Customer

Verified Customer

Verified purchase

2008-11-18

AC Power Invert Too Noisy

I bought this AC power inverter so I could power the humidifier on my Respironics M-Class CPAP using a battery. The CPAP can run directly off of the DC battery, but the humidifier heater requires AC. I did not realize from the product description that it has one or more cooling fans and is too noisy for use while sleeping! Kind of defeats the purpose. I am looking for a better inverter - or at least a quieter one.

- Verified Customer

Verified Customer

Verified purchase

2008-08-18

Worked Great

I used the Power Inverter to recharge the battery pack for my CPAP while we were in Yellowstone. It worked great. No problems.

- Verified Customer

Verified Customer

Verified purchase

2007-08-16

Safari-able!

I bought this unit with plans to take it on safari in March 2007. I'll be in tented camps with no conventional electricity but can use my CPAP with a battery that the safari company promises to recharge every day (btw both Thomson and Ker & Downey can make this promise.) My CPAP has an integral humidifier that I understand will pretty much drain the car battery every day. I've done a test to make sure this unit works okay with my own car battery. I'll do a further 8 hour test later but, frankly, even if I'm only able to get 2-3 hours of good sleep using this unit before my CPAP drains the battery, I'll be happy. Something is better than nothing!

- Verified Customer

1 - 9 of 9 Reviews