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USA-Made • Continuous + Pulse Flow

Oxlife Liberty 2 Portable Oxygen Concentrator

A versatile, medical-grade portable oxygen concentrator offering up to 2 LPM continuous flow and 10 pulse-dose settings. Designed for mobility, travel, and dependable oxygen delivery at home or on the go.

Oxlife Liberty 2 portable oxygen concentrator with continuous and pulse-dose oxygen delivery
2 LPM Continuous Flow
1–10 Pulse-Dose Settings
4.5 hrs Up to, Battery Runtime
3 Years Limited Warranty

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Man carrying an Oxlife Liberty 2 portable oxygen concentrator at a farmers market

True continuous flow, made portable

Is the Oxlife Liberty 2 Right for You?

The Oxlife Liberty 2 combines true continuous-flow oxygen from 0.5 to 2.0 LPM with pulse-dose settings 1–10 in a carryable concentrator. It may be a practical alternative to larger rolling systems for people whose prescribed oxygen needs are within its capabilities.

It is designed for home use, errands, appointments, road trips, and travel, with approved household power, compatible vehicle power, and a removable rechargeable battery.

Important: The right device and setting depend on your prescription and an assessment by your healthcare provider. Pulse settings are not equivalent to continuous-flow liters per minute.

Why buyers consider the Liberty 2

Portable Continuous Flow Without Giving Up Flexibility

True Continuous Flow

Provides a steady oxygen flow at available settings from 0.5 through 2.0 liters per minute.

Pulse Settings 1–10

Offers an alternative delivery mode for patients whose prescription and clinical evaluation support pulse-dose use.

Carryable Design

Offers mobility without requiring a large rolling concentrator for appropriate oxygen needs.

Home, Vehicle and Battery Power

Operate using approved AC power, compatible DC power, or a charged removable battery.

Oxlife Liberty 2 control panel and oxygen setting adjustments

Liberty 2 controls and settings.

Battery and power

Oxlife Liberty 2 Battery Life and Power Options

The Liberty 2 has a removable rechargeable battery. Battery duration varies considerably between pulse-dose and continuous-flow operation, as well as by selected setting and operating conditions.

Battery Operation

Use the rechargeable battery for cordless outings; additional batteries may be available for longer periods away from power.

AC and DC Power

Use approved household AC power or a compatible vehicle DC connection according to the manufacturer's instructions.

Battery planning: Higher oxygen settings and continuous-flow operation can reduce runtime. Confirm expected duration at your prescribed setting before purchasing or traveling.
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View Battery Life by Oxygen Setting

Compare typical battery operating times for the Oxlife Liberty 2. Runtime varies by oxygen delivery mode and selected setting.

Continuous Flow Battery Life

Flow Setting Runtime
0.5 LPM3.25 hrs
0.75 LPM2.5 hrs
1.0 LPM2 hrs
1.25 LPM1.75 hrs
1.5 LPM1.5 hrs
1.75 LPM1.25 hrs
2.0 LPM1 hr

Pulse-Dose Battery Life

Pulse Setting Runtime
Setting 14.5 hrs
Setting 24 hrs
Setting 33.5 hrs
Setting 43 hrs
Setting 52.5 hrs
Setting 62 hrs
Setting 71.75 hrs
Setting 81.75 hrs
Setting 91.25 hrs
Setting 101.25 hrs
Important: These are typical runtimes for a new, fully charged battery. Actual battery life varies with oxygen setting, breathing rate, battery condition and environmental conditions. Always plan for adequate backup oxygen when away from home.

Understand oxygen delivery

Continuous Flow vs. Pulse Dose on the Liberty 2

Continuous Flow: 0.5–2.0 LPM

Oxygen is delivered steadily, including between inhalations, at the selected continuous-flow setting.

Pulse Dose: Settings 1–10

The system delivers a measured pulse when it detects inhalation. These settings do not represent liters per minute.

A person prescribed continuous-flow oxygen should not assume that a pulse-only concentrator is an appropriate substitute. Learn more about pulse dose vs. continuous flow.

Home and nighttime use

Can the Oxlife Liberty 2 Be Used Overnight or with CPAP?

The Liberty 2 is designed for extended operation when used as instructed. Its continuous-flow capability may support a prescribed nighttime oxygen setup, including some compatible CPAP or BiPAP arrangements, but compatibility, connection method, flow requirement, and suitability must be confirmed by the treating clinician and equipment providers.

Do not connect oxygen equipment to CPAP or BiPAP or change prescribed settings without professional instructions. Keep your prescribed backup oxygen supply available.
Commercial aircraft flying above clouds, illustrating portable oxygen air travel

Travel and mobility

Road Trips and Air Travel with the Liberty 2

The Liberty 2 offers household, vehicle, and battery-powered operation for trips and daily activities. For air travel, verify current airline procedures, required documentation, device acceptance, and sufficient charged batteries before departure.

For extended travel, plan around the battery runtime at your prescribed setting and the availability of approved charging sources.

Read our portable oxygen air-travel guide.

Know what you're buying

What's Included with the Oxlife Liberty 2?

Typical Package Contents

  • Oxlife Liberty 2 concentrator
  • Selected removable rechargeable battery
  • Multifunction carrying bag
  • AC household power supply

Additional Equipment

  • DC vehicle power cable
  • Nasal cannula and user instructions
  • Applicable limited manufacturer warranty
  • Additional batteries or accessories, if included in your offer

Contents and warranty coverage vary by package. Confirm everything included in your written order.

Detailed product information

Oxlife Liberty 2 Technical Specifications

Specification Oxlife Liberty 2
Brand / Manufacturer Oxlife / O2 Concepts
Oxygen delivery Continuous flow and pulse dose
Continuous-flow settings 0.5–2.0 LPM
Pulse-dose settings 1–10 (not equivalent to LPM)
Device weight Approximately 6.35 lbs without battery; total carry weight increases with battery and bag
Dimensions Approximately 9.9 × 9.9 × 3.8 inches
Power Approved AC household power, compatible vehicle DC power, removable rechargeable battery
Battery life Depends on flow mode, setting, breathing rate, battery condition and environment. See battery runtime chart above.
Oxygen concentration Approximately 87–95%, per product specifications and operating conditions
Warranty 3-year limited warranty; component coverage may differ
Prescription Required

Confirm current manufacturer specifications and the exact battery/package configuration before publication or purchase.

Compare models

How Does the Liberty 2 Compare with Other Portable Concentrators?

Model Oxygen delivery Best distinction
Oxlife Liberty 2 Continuous flow up to 2 LPM; pulse 1–10 Carryable continuous-flow option
OxyGo NEXT NG Pulse dose 1–6 only Lighter option for suitable pulse-dose prescriptions
OxyGo FIT Plus Pulse dose 1–4 only Very lightweight pulse-only system
Oxlife Independence Continuous flow and pulse dose Higher continuous-flow capability in a rolling system

The correct choice depends first on prescribed oxygen delivery, followed by portability, battery requirements, and intended use.

Answers before you buy

Oxlife Liberty 2 Frequently Asked Questions

Does the Oxlife Liberty 2 provide real continuous-flow oxygen?

Yes. It offers continuous flow from 0.5 to 2.0 liters per minute at available settings.

What are the Liberty 2 pulse settings?

The device offers pulse-dose settings 1–10. These are not interchangeable with continuous-flow liters-per-minute settings.

How much does the Oxlife Liberty 2 cost?

Price varies by package and battery configuration. Call Inspired Portable Oxygen at 1-800-608-8651 for current pricing and available payment options.

How much does the Liberty 2 weigh?

The concentrator is approximately 6.35 lbs without the battery. The full carrying weight is greater with the battery and carry bag.

How long does the Liberty 2 battery last?

Runtime depends on continuous-flow versus pulse-dose operation, selected setting, breathing rate, battery age, temperature and other operating conditions. See the Battery Life by Oxygen Setting chart above for typical runtimes at each setting. Confirm your prescribed oxygen requirements and plan for backup oxygen.

Can I use the Liberty 2 while sleeping?

It is designed for extended operation. Whether its delivery mode and setting meet your overnight needs must be determined by your healthcare provider.

Can it be connected to CPAP or BiPAP?

Some prescribed oxygen setups may be compatible. Your clinician and equipment providers must confirm the correct configuration and oxygen requirements.

Can the Liberty 2 operate in a car?

It can operate from compatible vehicle DC power according to the manufacturer's instructions.

Can I take the Liberty 2 on an airplane?

Check the airline's current device acceptance, documentation and battery requirements before traveling.

Does it require oxygen tank refills?

No. It concentrates oxygen from surrounding air when operated using an approved power source.

Is a prescription required?

Yes. The Oxlife Liberty 2 is a prescription oxygen device.

Official product resources

Oxlife Liberty 2 Video and Product Brochure

Explore manufacturer materials for an additional look at operation, controls, accessories, and product features.

Official Liberty 2 Video

See the system and its features in the manufacturer's video.

Watch the Official Video

Official Liberty 2 Brochure

Review additional manufacturer product information.

View Official Brochure

Helpful buying guides

Learn More Before Choosing a Concentrator

How to Choose a Portable Oxygen Concentrator Portable Oxygen Battery Life Guide Pulse Dose vs. Continuous Flow

Personal assistance before you buy

Compare Liberty 2 Packages and Today's Pricing

Speak with Inspired Portable Oxygen about current offers, batteries, payment options, and whether the Liberty 2's features match the type of oxygen delivery you have been prescribed.

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