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Power Supply for Puritan Bennett 420G, 420S, 420SP and 420E CPAP

Name: Power Supply for Puritan Bennett 420G, 420S, 420SP and 420E CPAP
Brand: Mouser Electronics
SKU: PSAC24A-120L6
Price: 64.59 USD
Availability: Discontinued
Rating: 4.5 (36 reviews)

BY Mouser Electronics | Item #PSAC24A-120L6

(36) Read Reviews

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Power Supply for 420 G/S/SP/E Machine

The Power Supply for Puritan Bennett 420G, 420S, 420SP and 420E CPAP is the replacement power supply for Puritan Bennett GoodKnight CPAP machines. This power supply is compatible with the following CPAP machines:

GoodKnight 420G
GoodKnight 420S
GoodKnight 420SP
GoodKnight 420E

This power supply is not compatible with the 425 BiLevel Machine. If your current machine power supply is damaged or broken, this part is a perfect match.

Your order includes the power supply only and does not include any other items.

What's Included:

Power Supply

Power Supply for 420 G/S/SP/E Machine

GoodKnight 420G
GoodKnight 420S
GoodKnight 420SP
GoodKnight 420E

This power supply is not compatible with the 425 BiLevel Machine. If your current machine power supply is damaged or broken, this part is a perfect match.

Your order includes the power supply only and does not include any other items.

What's Included:

Power Supply

Learn More About This Product

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

★★★★★

(36)

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★★★★★

Power plug

Verified purchase | Mar. 15, 2019 | Verified CPAP.com Customer

I so happy it's the right plug Thank you so much

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(0)

★★★★★

Power Supply for Puritan Bennett

Verified purchase | Nov. 27, 2015 | Verified CPAP.com Customer

What a life saver, our CPAP machine stopped working and I was so happy when I found this replacement. Great, easy and fast at delivery!

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(0)

★★★★★

Puritan Bennett 420G

Verified purchase | Sep. 30, 2015 | Verified CPAP.com Customer

Very happy with your product. Seems to be better quality than original unit. Thanks, Paul

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(0)

★★★★★

Verified purchase | Aug. 27, 2015 | Verified CPAP.com Customer

Exactlu what I needed.

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(0)

★★★★★

Great find

Verified purchase | Jul. 29, 2015 | Verified CPAP.com Customer

High quality, worked as promised.

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(0)

★★★★★

power cord

Verified purchase | Jan. 27, 2015 | Verified CPAP.com Customer

Cord worked perfectly. Service was great!

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(0)