CPAP(continuous positive airway pressure) therapy is used for people who suffer from sleep apnea. But this should not stop people from traveling. So you must be prepared for emergencies. What if you are stuck in a car for some reason without any backup? Can you use your car battery for emergency CPAP backup?

We have an answer to your question and the answer is YES! In case of any emergency, you can use your car battery as a CPAP backup.

As you must be familiar most of these CPAP uses an AC power adapter. So how to use your car battery?

Well, you have to purchase some CPAP accessories for this.

A car battery can be used to power a CPAP machine but you may require some extra accessories like a cigarette lighter to DC port or alligator clips to female cigarette socket extension. If your CPAP uses type C as an input, you can also use alligator clips to type C extension.

Firstly you can power your CPAP using your car’s cigarette port. Just buy a cigarette lighter from amazon. Plug this to your cigarette lighter also know as car outlet port and it’s done! Yes, it is soo simple but there is a big drawback. If your car box is using the same battery for engine then you need to monitor it as CPAP may consume your battery. This is especially true in case you are turning on a humidifier.

DC adapter for Respironics

DC adapter for Respironics

Now let us see how to use the car battery directly to power your CPAP device. For this, you will need Alligator clips to female cigarette socket extension. You can get it on Amazon for around $10. Then couple it with a 12V car adapter to power our CPAP.

Aligator to Female Cigarrete

Some may suggest you use an AC convertor from your car battery before powering your CPAP. But most of the CPAP support the 12V DC today and I feel since the CAPA adapter again converts your AC back to DC, its just a waste of power.

If you use CPAP machine when traveling, consider getting a CPAP battery backup. It is so convenient.

Also, it is better not to use humidifiers so that your battery long laster. The battery life completely depends on the capacity of the car battery you are using.

Hope you found some value in this article. If you have any questions, let me know through the comment section below. Also, share this article with someone who has or planning to purchase a CPAP device.