AirSep FreeStyle Battery Pack

AirSep FreeStyle Battery Pack



✔︎ New External Design
✔︎ Longer Battery Life Compared to the Old Internal Battery
✔︎ Up to 3.5 Hours on Pulse Setting 2 (AirSep FreeStyle 3)
✔︎ Up to 2.5 Hours on Pulse Setting 2 (AirSep FreeStyle 5)
✔︎ Optional 2-Bay External Desktop Charger
✔︎ Expedited Battery Swap Outs
✔︎ Compatible with the AirSep FreeStyle 3 & FreeStyle 5


AirSep FreeStyle External Battery Pack

The AirSep FreeStyle 3 and FreeStyle 5 have both received cosmetic and performance upgrades. The FreeStyle portable oxygen concentrator has gone from a black finish, to a vibrant white finish.

But more importantly the battery option for the AirSep FreeStyle 3 and 5 are no longer internal. Instead, the portable oxygen concentrators feature a lightweight, external battery pack, that delivers longer portable operation than the older, internal battery.

Extended Battery Life = More Freedom

Thanks to some intense research and development, AirSep was able to completely reengineer the FreeStyle 3 and 5 battery option. Now featuring a completely external battery pack, you no longer have to add on additional weight in the form of an external battery to enjoy longer portable usage.

The external battery pack for the AirSep FreeStyle 3 will deliver up to 3.5 hours on a pulse setting of 2, compared to 2.5 hours on the same setting with the old internal battery.

On the other hand, the AirSep FreeStyle 5 new external battery pack will deliver up to 2.5 hours on a pulse setting of 2. You can view the full battery specs of both units by looking at the table below.

Full Battery Life:

Flow Rate AirSep FreeStyle 3 AirSep FreeStyle 5
Pulse Flow 1 Up to 6.5 Hours Up to 4.25 Hours
Pulse Flow 2 Up to 3.5 Hours Up to 2.5 Hours
Pulse Flow 3 Up to 3 Hours Up to 2 Hours
Pulse Flow 4 N/A Up to 1.75 Hours
Pulse Flow 5  N/A  Up to 1.25 Hours

Charging Options That Compliment Your Portable Lifestyle

  • Universal Power Supply (AC/DC)
  • 2-Bay External Battery Charger

Whether purchasing the AirSep FreeStyle 3 or FreeStyle 5 portable oxygen concentrator, you will receive two charging methods. Unlike other medical oxygen devices that have an AC power Supply and a DC Power Supply.

The FreeStyle line of oxygen concentrators feature a unique universal power supply, that features both the AC and DC power supplies in one compact device. Helping to save space and reduce the weight of your accessory bag.

The AC power supply option allows you to charge your FreeStyle 3 or FreeStyle 5 POC through any conventional wall outlet. While simultaneously receiving your prescribed dosage of medical grade oxygen.

While the DC power supply will give you complete access to all flow settings on both the FreeStyle 3 and FreeStyle 5, while charging and powering your concentrator through your vehicles DC power outlet (cigarette lighter).

A fully depleted FreeStyle external battery pack will recharge in up to 4-5 hours, with both the AC and DC power supplies.

If you travel frequently or are constantly running errands, this accessory will be for you. However, the COPD Store highly recommends that all patients have additional batteries in the event of unforeseen circumstances or emergencies. The external desktop battery charger allows you to charge up to 2 external battery packs simultaneously in up to 4-5 hours.

Featuring its own AC power supply, simply plug the external desktop charger into any of your homes’ power outlets, and attach up to 2 battery packs into the available charging bays and the charger will take care of the rest.

That’s right, you can simply set it and forget it. This accessory is ideal when traveling or if you’ll be out running errands. Before you head out, attach one or two extra battery packs onto the external desktop charger, then once you return 4-5 hours later you will have 1 or 2 fully recharged batteries that you can swap out for your current depleted battery.

An Ideal Companion for the AirSep FreeStyle Carrying Case

When two products are designed for compatibility, you benefit the most! AirSep engineered the FreeStyle 3 and FreeStyle 5 carrying case to compliment the new external battery pack.

Not only does the carrying case provide you with multiple and comfortable carrying options, it also features a side pocket specifically designed to house the external battery pack. Allowing you to seamlessly swap out and exchange battery packs at the drop of a hat, all without having to remove your POC from the protective carrying case.


  • Manufacturer: AirSep (Chart Industries)
  • Compatibility: AirSep FreeStyle 3 and FreeStyle 5
  • SKU Number: BT033-1

Additional information

Weight 1.5 lbs


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