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Best for those who breathe through the nose only or use a chinstrap.
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For those that need or prefer delivery to the mouth and nose.
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Lightweight and minimal masks that seal at each nostril.
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Having problems with mask fit? Shop all our masks for the best fit.
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Keep your CPAP mask in top shape and extend its life by replacing parts regularly.
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Need to replace more than one piece? Mask Kits include everything except headgear.
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CPAP Machine
Provide therapy air at one specified pressure continuously.
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Automatically adjust pressure throughout the night for a more comfortable experience.
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Provide one pressure for inhalation and a separate pressure for exhalation.
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Smaller machines designed to be taken during travel.
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View all types and models of machines on one page.
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Accessories to keep your therapy equipment clean and comfortable.
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Keep your CPAP mask in top shape and extend its life by replacing parts regularly.
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The cleaner your filters, the cleaner the air you breathe.
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We offer a variety of hose types and lengths to enhance your setup.
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Batteries, inverters, converters, power cords, and parts.
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Humidifiers provide moisture to help prevent dryness of the nose and throat.
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Replacement items for a wide range of humidifiers.
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We have a huge selection of machine parts for almost every machine.
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Increase your sleeping time with one of our healing and luxurious sleep masks.
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Quiet the nighttime roar with our selection of snoring aids.
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Browse our top-of-the-line white noise machines to help you fall and stay asleep.
Health Monitors
Improve your night by tracking your sleep quality, health, and fitness.
- Starter Pack
- Home /
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- Inverters & Converters /
- Aims Power
400 Watt DC to AC Power Inverter
Product Overview
400 Watt DC to AC Power Inverter by Aims Corporation, model number PWRINV 400W features a soft start function, overload protection, high grade thermal protection, and a low battery shutdown. With a modified Sinewave output form, output capacity is 400 watts with a surge power up to 1200 watts. At set of battery clamps cables are included as well as a cigarette lighter cable. The unit has two AC power outlets and an on/off switch.
This inverter has an internal fan that runs continuously to maintain the internal temperature of the inverter. The fan is not designed to turn on and off dependent on the temperature of the inverter.
This Product Includes...
This product carries a one year warranty from the date of purchase.
- Model PWRINV400W
- DC Input Voltage 12V (10-15V)
- Output Wave Form Modified Sinewave
- Output Power 400W
- Surge Power Capacity 1200W
- Efficiency Over 90%
- No Load Current <0.75A
- Battery Low Alarm DC 10.5 +- 0.5V
- Battery Low Shutdown DC 10 +- 0.5V
- Alarm and Thermal 55 +- 5 degrees C
- Shutdown (automatic Recovery)
- External DC Input Fuse Must be fitter, Use 40A
- Power Switch DC Input ON/OFF Control
- Dimensions (LxWxH) 7.25 in x 5 in x 2.5 in
- Net Weight 0.7Kg
CPAP.com always offers these services
- 24 hour access to our CPAPtalk.com Support Forum
- Learning Center for information on sleep apnea and cpap equipment
- Consumer Purchasing Trends Reports
- Warranty Services for all items purchased through CPAP.com
- Insurance Compliant Invoices
- Free Prescription Request System
Battery Draw When Using an Inverter: The use of any inverter will reduce the battery life up to 50% because the inverter, itself, uses battery power.
Inverter Fan: The fan on this inverter is designed to always run. It does NOT cut on and off based on the internal temperature of the inverter.
Size Note: The manufacturer has made this item available in two sizes. The current size available is 7.25 in x 5 in x 2.5 in.
Warranty: This product carries a one year warranty from the date of purchase.
Use With ResMed S7 and S8 Machines: This 400 Watt inverter is suitable to power a S7 or S8 series machine without humidifier.
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:
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:
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.
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.
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
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.
worked very well. Ran my CPAP machine wonderfully. Well worth the price.
Great. Just what I needed to recharge my cpap lithium ion battery.
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. more...
4 people found this helpful.
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. more...
5 people found this helpful.
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. more...
1 person found this helpful.
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