Power Solutions


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    As society becomes more mobile and travel becomes more frequent, taking your CPAP machine with you when you're on the go is becoming a necessity. That's why batteries and other power solutions are now so popular in the CPAP world today. The most important thing to take away from this introduction to CPAP batteries is this: not all batteries will work for all machines. The type of battery you need often times is dictated by the type of machine you have. Start browsing the different types of batteries we have by using the linked page as a resource.

    There are two different types of overnight batteries that people can use with their CPAP machine:

    Lithium-Ion Batteries

    A lithium-Ion battery is the newest type of rechargeable battery to come on the market in recent years and has the ability to provide a lot of power in a small and portable size. These days, you can find lithium-ion batteries almost anywhere: cell phones, drones, computers, and especially CPAP machines. Most CPAP machines don't have a built-in battery system that can power the machine when the power goes out, or when traveling or camping. Due to their size and cost, batteries are typically sold as accessories to CPAP machines, and not actually sold with the CPAP machine itself.

    Deep Cycle (Car and Marine) Batteries

    You're probably more familiar with Deep Cycle (Car and Marine) Batteries. These are typically sold locally at auto parts stores and are the same batteries you would put in your car. It's not easy to recharge them.

    Lithium Ion Batteries are lighter, easier to carry, and have more features than their Deep Cycle cousins. Deep Cycle Batteries can last for a longer period of time, but are heavy and are not easily recharged. Some machines will require a power inverter to connect to a battery while other types of machines will not need one. It will depend on both the battery and the machine. CPAP.com does not sell Deep Cycle Batteries.

    A lithium-Ion battery is the newest type of rechargeable battery to come on the market in recent years and has the ability to provide a lot of power in a small and portable size. These days, you can find lithium-ion batteries almost anywhere: cell phones, drones, computers, and especially CPAP machines. Most CPAP machines don't have a built-in battery system that can power the machine when the power goes out, or when traveling or camping. Due to their size and cost, batteries are typically sold as accessories to CPAP machines, and not actually sold with the CPAP machine itself.

    By using a CPAP battery (sold separately) as a battery backup, if the power goes out, the machine will automatically start drawing battery power. This can be useful during storm season when power outages are more common. Like we discussed before, the battery to get often depends on your machine. You'll need to know if your machine has a specific battery designed for it, and if so, you'll need to get that one. There's no one, universal battery that works with all machines. Once you've identified which batteries will work with your CPAP machine, you'll need to research which ones can be used as a battery backup.

    CPAP batteries vary widely in the amount of time they last on a single charge. Some batteries will only work with your machine by using an inverter. Inverters draw power from the battery as well as the machine, so run times will be significantly less when using an inverter as opposed to using the battery to only power the machine.

    Battery run times will also be affected by the CPAP machine pressure settings. A higher pressure setting ultimately means reduced battery run times. Some batteries can last between one and two nights, or longer depending on a lot of factors including if you need a higher pressure, or if you use humidification. There is a third factor that can impact the run times of your battery: altitude. If you're traveling to a higher elevation, the air is thin and so to get the air to the required pressure, the machine needs to work harder. This can also be a drain on the battery. To ensure you have enough power, it may help to have a second battery.

    CPAP.com tries to stay up to date on the current machine's power draws and how they relate to available batteries to provide estimated run times at normal conditions. If you have questions about how long the battery lasts, you can give us a call at 1-800-356-5221, and we'd be happy to help!

    If you're going camping, it's a great reason to have an overnight battery! Camping usually means long hours spent off-the-grid, with no access to power. This means that for a multi-day trip, you may need multiple batteries. As we discussed before, depending on your usage, battery runtimes can vary greatly. Run times can also be impacted by whether or not you need to run an inverter with your setup.

    Running a CPAP off of a battery is fairly easy. It's important to have all the correct equipment and to do a test run of your setup before going off the grid. This will help you spot any potential problems and give you time to correct things before you travel. In order to run a CPAP off of a battery, you'll need a battery that is compatible with your brand of machine, an inverter (if your particular machine requires it), and a good way to connect the battery to the machine. Some batteries snap into place as a part of an integrated design. Others will require a DC cord or a special cord with an adapter that connects the machine to the battery. It varies from device to device. Once you have all the equipment you need, you're ready for a test run.

    1. If you have an inverter, start by connecting the inverter to the battery. Depending on the type of battery, you may need to connect with a special cord or in some cases, alligator clips. Once you've done this, you can simply plug the CPAP into the electrical outlet on the inverter and you're ready to go.
    2. If your machine doesn't require an inverter, you'll need to take the cord or DC cable and connect it to your battery. This exact process is different depending on what machine you're using and what battery you have.
    3. Plug the special cord or DC cable directly into the DC input from your machine.
    4. Power on.
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