Sleepfoundation.org is reader-supported. We may earn a commission through products purchased using links on this page. Learn more about our process here

Home / Best CPAP Supplies / Best CPAP Batteries

Written by

Daniel Noyed

author

Continuous Positive Airway Pressure (CPAP) machines are the most common treatment for sleep apnea. Virtually all CPAP machines are powered by a power supply that plugs into an electrical outlet. For this reason, nearly all CPAP machines do not require batteries.

Sometimes, sleepers need or want to power their CPAP machines by battery, however. For example, sleepers needing to use their CPAP while camping or while traveling to places that don’t always have a convenient American electrical outlet require a battery to power their machines. A battery can also act as a power source backup option in the event of a power outage.

Choosing the right CPAP battery is an important purchase decision. Batteries capable of powering CPAP machines are not cheap, so you want to invest in one that is long-lasting and compatible with your specific CPAP machine.

The Best CPAP Batteries

Product Details

Portable Outlet CPAP Battery

Best Universal Battery

Portable Outlet CPAP Battery

Portable Outlet CPAP Battery
Price: $349
Who it's best for:
  • Sleepers who use any CPAP or BiPAP machine with an American power supply plug
  • Sleepers who need their battery to recharge relatively quickly
  • Sleepers who want their battery to be capable of charging devices, such as phones and tablets, in addition to powering their CPAP machine
Highlights:
  • Capable of powering any CPAP or BiPAP machine with an American power supply plug
  • Two USB ports allow for CPAP machine and digital device charging at the same time
  • Recharges in 4 hours or less when plugged into a wall outlet or car (optional inverter required for car charging)
Portable Outlet CPAP Battery

Use this SleepFoundation.org link for the most current discount on Portable Outlet products

The Portable Outlet CPAP Battery is a versatile portable battery for CPAP machines. The Portable Outlet CPAP Battery is a 155-watt Lithium-ion battery that meets FAA and TSA battery standards for allowance on commercial flights in carry-on baggage. The battery unit contains a standard, American outlet, so it may be used to power any CPAP or BiPAP machine that has an American power supply plug. Its outlet puts out 110 volts of AC power.

Sleepers who opt to use this battery can count on it to last for at least 500 charges. The battery takes 4 hours or less to completely recharge. People may charge the battery by plugging it into a wall outlet, or by using a DC to AC inverter to plug it into a car outlet.

The Portable Outlet CPAP Battery may be used to charge nearly any electric-powered item. People who are interested in a portable battery because they want to use their CPAP machines while camping or traveling enjoy this feature. The Portable CPAP Battery can charge anything with an American plug, such as a blow dryer or laptop computer.

Finally, the Portable Outlet CPAP Battery also has two USB ports next to its standard plug port. As a result, sleepers may charge their devices at the same time they power their CPAP machines. Smart phones, tablets, bluetooth speakers, and other small, digital devices are often charged via USB port.

BPS Sine Wave Inverter

Best Universal Inverter

BPS Sine Wave Inverter

BPS Sine Wave Inverter
Price: $70
Who it's best for:
  • Sleepers who want to be able to recharge their portable CPAP battery from a vehicle
  • People wanting a small, lightweight inverter that’s easy to carry when traveling
  • People wanting to charge devices in addition to their battery using the inverter
Highlights:
  • Small, lightweight inverter allows sleepers to charge portable CPAP batteries using a car outlet instead of a wall outlet
  • USB ports allow the inverter to charge two devices as it charges a CPAP battery
  • A slow voltage ramp-up protects devices from electrical overload
  • An internal fan prevents overheating and prolongs the life of the inverter
BPS Sine Wave Inverter

Use this SleepFoundation.org link for the most current discount on Battery Power Solutions products

The BPS Sine Wave Inverter is compatible with most portable batteries. Sleepers can use the BPS Sine Wave Inverter to  charge their portable CPAP batteries with their vehicle’s 12-volt DC outlet .

The BPS Sine Wave Inverter transforms the DC voltage from a vehicle into 110-120 AC volts compatible with most electric-powered devices. The Inverter contains three outlets: one for a standard American plug and two USB ports. The standard American outlet is identical to a wall outlet, enabling owners to use the inverter for a variety of electronic devices. The Inverter’s USB ports allow for charging devices such as phones and tablets simultaneously while charging the CPAP battery.

The technology of the BPS Sine Wave Inverter ensures devices plugged into it won’t overheat or experience a surge. The Inverter slowly ramps up its voltage output, so plugged-in devices are protected. An internal fan keeps the Inverter from overheating and extends its lifespan.

Finally, the BPS Sine Wave Inverter feels lightweight and runs smaller than many other inverters. Many sleepers are interested in a portable CPAP battery and inverter because they want to use their CPAP machines while camping or traveling. This lightweight inverter is easy to pack and carry, making it a good choice for people on the go.

How to Choose a CPAP Battery

Unless you’ve purchased a CPAP battery before, you likely feel uncertain about how to determine which battery to choose. There are a variety of CPAP-compatible batteries available on the market. Not all batteries perform equally well, however.

Knowing what to consider when purchasing a CPAP battery can help ensure you purchase the battery that will work the best for your needs and your CPAP machine.

What to Consider When Purchasing a CPAP Battery

When shopping for the best CPAP battery, consider many different factors. Most importantly, the battery you choose must be compatible with your CPAP machine. Secondly, your battery’s run time should exceed the time you spend sleeping, so your machine doesn’t lose power during the night.

Other factors vary in their importance depending on the person. For example, some sleepers are on a budget, so a lower-price battery could be important to them. Others might want to invest in a battery that’s long-lasting, so its durability and warranty could be of importance. Sleepers planning on using their battery while camping or traveling do best with a highly portable battery that charges quickly.

Be sure to consider your own unique situation and preferences when shopping for a CPAP battery. The best CPAP battery is the one that best satisfies your needs.

Machine Compatibility
Finding a battery that’s compatible with your CPAP machine is an absolute must. Not all portable batteries are compatible with all CPAP machines.

Some CPAP machine brands make their own compatible portable batteries. Be sure to research compatibility before purchasing a battery. An incompatible battery might not power your CPAP machine properly. An incompatible battery could also damage your CPAP machine.

Battery Capacity
Battery capacity is a scientific term that refers to a battery’s ability to store power. Battery capacity is usually measured in terms of milliamps per hour (mAH). Generally, batteries with a higher capacity also have a longer run time. External factors, such as temperature, can impact a battery’s capacity. Most sleepers want a battery with a higher capacity to power their CPAP machine.

Run Time
Run time refers to how long a battery can power a device. Run time is important when batteries are being used to power CPAP machines. If your battery’s run time isn’t long enough, your battery could run out of power while you’re using the CPAP machine. Most CPAP batteries provide enough power for 1 to 3 nights of sleep before they require recharging.

Some sleepers want a battery with an exceptionally long run time, so they don’t have to recharge the battery every day. Batteries with extra long run times tend to be more expensive than those with shorter run times. A long run time battery could be necessary for some sleepers camping or traveling, who can’t access a wall or car outlet every day during their travels.

Charge Time
Charge time refers to how long a battery takes to recharge. Charge time can be important, especially to people using a CPAP battery while traveling. When a person isn’t in one single place or near an outlet all day, having a battery that charges quickly is required so it can become fully charged. If a battery isn’t fully recharged during the day, its run time will be diminished, and it might not be capable of powering a CPAP machine all night long.

Portability
Portability matters to sleepers wanting a CPAP battery so they can use their CPAP machines while camping or traveling. Size, weight, and design impact the portability of a CPAP battery. Smaller batteries take up less space in a bag, which is a plus, especially when traveling in situations that limit luggage space. Lighter-weight batteries help keep bags light, which is important when camping or in other travel situations that require a person to carry their luggage for longer distances.

Durability
The more durable a battery it is, the longer lifespan it will likely have. Some battery manufacturers share how long their battery is guaranteed to last in terms of how many times it may be recharged. Durability refers to more than just lifespan, however. The design and shape of a battery also factor into its durability. A durable battery won’t break easily or become damaged through regular use.

Price
People on a budget care about the price tag associated with their CPAP battery. CPAP batteries generally run between $200 and $600. Unfortunately, less expensive batteries tend not to perform as well. Less expensive batteries tend to have shorter run times and longer charge times. Of course, this is a generalization and not a rule. Sleepers shouldn’t make assumptions about the quality of a battery or decide which battery to purchase based on price alone.

Warranty
Most CPAP batteries come with a 1-year manufacturer’s warranty. Generally, these 1-year warranties cover defects in the battery but not damage or problems caused by use. Sleepers seeking a CPAP battery should familiarize themselves with details of the manufacturer’s warranty before making a purchase.

CPAP Machine Battery Compatibility

Purchasing a battery that’s compatible with your CPAP machine is of utmost importance. If you purchase a battery that isn’t compatible, it could damage your machine or simply not work.

We’ll highlight popular CPAP machine models and batteries compatible with each machine type.

CPAP Machine Model Compatible CPAP Battery
DreamStation Portable Outlet CPAP Battery

Philips Respironics Respironics Travel Battery Kit

EXP96 Pro Lithium Ion Battery Bank

EXP48 Pro Lithium Ion Battery Bank

BPS Freedom Travel Battery With the DreamStation 12V Power Converter

BPS Freedom V2 Travel CPAP Battery + Machine Cable Kits

DreamStation Go Portable Outlet CPAP Battery

DreamStation Go Overnight Battery

BPS Freedom Travel Battery With the 150W Sine Wave Inverter

Medistrom Pilot-24 Lite With the Adapter

ResMed AirMini Portable Outlet CPAP Battery

Medistrom Pilot-24 Lite

EXP96 Pro Lithium Ion Battery Bank

EXP48 Pro Lithium Ion Battery Bank

BPS Freedom Travel Battery With the 150W Sine Wave Inverter

BPS Freedom V2 Travel CPAP Battery + Machine Cable Kits

ResMed AirSense 10 Portable Outlet CPAP Battery

EXP96 Pro Lithium Ion Battery Bank

EXP48 Pro Lithium Ion Battery Bank

ResMed Power Station II Battery Kit

Medistrom Pilot-24 Lite

BPS Freedom V2 Travel CPAP Battery + Machine Cable Kits

HDM Z2 Z2 PowerShell Extended Battery

EXP96 Pro Lithium Ion Battery Bank

EXP48 Pro Lithium Ion Battery Bank

BPS Freedom Travel Battery With the 150W Sine Wave Inverter

Inverters

Inverters allow sleepers to recharge their portable CPAP battery using a DC car outlet rather than a standard wall outlet. Since nearly all American electrical systems use AC power, CPAP batteries are recharged by AC power. Vehicle electrical outlets put out DC power, however. An inverter is required to transform DC power into usable AC power.

If you’re always able to charge your CPAP battery using a wall outlet, you don’t need an inverter. An inverter is useful to people who want to recharge their CPAP battery from within a vehicle. People bringing their CPAP machine camping or on road trips often find an inverter crucial, since they don’t have access to wall outlets on a daily basis while traveling.

Frequently Asked Questions About CPAP Batteries

When people shop for CPAP batteries for the first time, they often have questions. We’ll answer the most frequently asked questions, so you can feel confident as you shop for a battery to power your CPAP machine.

How long will a battery power a CPAP machine?

Generally, a fully charged portable battery will power a CPAP machine for anywhere from 8 to 24 hours. How long any specific battery can power a CPAP machine depends on the battery’s capacity and run time.

Many CPAP battery manufacturers share how long their fully charged battery can power a CPAP machine. If you’re considering a battery from a manufacturer that doesn’t share this information, take time to read customer reviews. Often, existing customers who have purchased CPAP batteries comment on the battery’s run time in their reviews.

How much do CPAP batteries cost?

Generally, CPAP batteries cost between $200 and $600. Of course, you might come across some batteries that cost a little less because of a sale, or a little more because they come with extra features. Usually, shoppers purchasing a CPAP battery have to pay the entire cost of the battery out of pocket.

Are CPAP batteries covered by insurance?

No, most of the time, CPAP batteries are not covered by insurance. Unfortunately, most health insurance companies do not consider CPAP batteries medically necessary. Since a CPAP machine already comes with a power supply that plugs into a wall outlet, a portable CPAP battery is often viewed as an optional accessory.

Still, if you have health insurance, it may still be worth calling your insurance company to inquire about CPAP batteries. Although most do not, some insurance companies do cover a portion of the cost of batteries.

Can you use a car battery to power a CPAP machine?

Although it is possible to power a CPAP machine with a car battery, it could be risky. You would need to use alligator clips to connect an inverter directly to the battery. Additionally, car batteries are large and heavy, making them impractical for travel.

You could use a car battery to power a CPAP by plugging the machine into an inverter connected to a car’s outlet, but this setup also isn’t ideal. You would then need to sleep in the car to stay near the outlet. Also, if you turned the car engine off, powering the CPAP machine would eventually drain the car’s battery.

Do you need a prescription for a CPAP battery?

No, you do not need a prescription to purchase a CPAP battery. Generally, CPAP batteries are sold to the general public directly, through websites and from medical device companies. Most pharmacies do not sell CPAP batteries and prescriptions are unrelated to the CPAP battery buying process.

Most health insurance companies do not cover CPAP batteries. That said, some insurance plans do cover or partially cover CPAP batteries. If your insurance company is one of the few that covers CPAP batteries, you would need to provide medical proof that you require a CPAP machine to have your battery purchase covered. You would not need a prescription.

Can you charge a CPAP battery in the car?

Yes, you can charge a CPAP battery in the car using an inverter. Most CPAP batteries do not plug into a car’s outlet directly. Cars contain a DC outlet, while most batteries require AC power to recharge. An inverter takes the DC electricity from the car outlet and turns it into AC power, which can safely recharge the CPAP battery.

Written by

Daniel Noyed

author

In This Article