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O2 Concepts Oxlife Liberty2 Portable Concentrator
The Oxlife Liberty2 — a true portable with continuous flow up to 2.0 LPM plus pulse 1–10, at just 6.35 lb. Built in the USA, authorized O2 Concepts, genuine new unit.
US$2,995.00
✓ O2 Concepts manufacturer warranty: 3-yr concentrator / 1-yr sieve columns / 1-yr battery · authorized O2 Concepts dealer, genuine new unit
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Call (786) 755-8063FAA approvedFDA clearedAuthorized O2 ConceptsMade in USA
10pulse settings (1–10)
2.0 LPMcontinuous flow
6.35 lbunit weight
USAbuilt in the USA
10pulse settings (1–10)
2.0 LPMcontinuous flow
6.35 lbunit weight
USAbuilt in the USA
- Genuine new O2 Concepts unit — authorized dealer
- Continuous flow to 2.0 LPM plus pulse 1–10
- Just 6.35 lb · built in the USA
- FAA-approved · FDA-cleared
- O2 Concepts manufacturer warranty (3-yr unit / 1-yr sieve / 1-yr battery)
FAA approvedFDA clearedAuthorized O2 ConceptsMade in USA
CONTINUOUS FLOW IN A TRUE PORTABLE · AUTHORIZED O2 CONCEPTS DEALER
Continuous flow and pulse dose — in a 6.35 lb portable
The Oxlife Liberty2 is a rare thing: a genuinely portable oxygen concentrator — just 6.35 lb — that delivers real continuous flow up to 2.0 LPM alongside ten pulse settings. Most portables this light are pulse-only; the Liberty2 gives you both, in one American-made unit you can actually carry. It's built for oxygen users who need continuous flow but refuse to be tied to a heavy transportable.
American Oxygen is an authorized O2 Concepts dealer. Every Oxlife Liberty2 is a genuine, new unit — FDA-cleared and FAA-approved, made in the USA — backed by the O2 Concepts manufacturer warranty.Why the Oxlife Liberty2
6.35 lb — continuous flow you can carry
At just 6.35 lb the Liberty2 is a true portable, not a transportable you wheel behind you. It's one of the lightest concentrators that still delivers real continuous flow — up to 2.0 LPM — so you get the delivery type you need without the weight you don't.
Two ways to breathe, one unit
Continuous flow from 0.5 to 2.0 LPM in 0.5 steps, plus ten pulse settings with adaptive dosing. Use continuous for sleep or steady needs and pulse on the move — a single unit covers both as your day changes.
FAA-approved, FDA-cleared & made in the USA
The Liberty2 is FAA-approved for commercial flights, so it flies in the cabin with you. It's a genuine, FDA-cleared prescription medical device built in the USA — not a grey-market import.
Two ways to breathe, one unit
The Liberty2 is a true portable that gives you both continuous flow and pulse dose — rare in a unit this light.
2.0LPM maxcontinuous flow, 0.5–2.0 in 0.5 steps
1–10pulse settingsadaptive pulse dose
Pulse-mode runtime by setting
In pulse mode the Liberty2 runs across ten settings from a single battery. Here's the runtime per charge at each (hours per charge).
| Pulse setting | Runtime per charge |
|---|---|
| Setting 1 | 4h 30m |
| Setting 2 | 4h 00m |
| Setting 3 | 3h 30m |
| Setting 4 | 3h 00m |
| Setting 5 | 2h 30m |
| Setting 6 | 2h 00m |
| Setting 7 | 1h 45m |
| Setting 8 | 1h 45m |
| Setting 9 | 1h 15m |
| Setting 10 | 1h 15m |
| Recharge — battery | under 2.5 hours (AC or DC) |
| Battery | single-bay, user-swappable |
In pulse mode the bolus per breath adapts to your breath rate to keep oxygen output steady across all ten settings (8–80 mL bolus).
Continuous-flow runtime by liter setting
In continuous mode the Liberty2 delivers a steady flow from 0.5 to 2.0 LPM. Higher flow draws more from the battery.
| Continuous flow | Runtime per charge |
|---|---|
| 0.5 LPM | 3h 15m |
| 1.0 LPM | 2h 00m |
| 1.5 LPM | 1h 30m |
| 2.0 LPM | 1h 00m |
Continuous flow is a true steady liter output — the delivery type most often prescribed for sleep and steady daytime needs.
Oxlife Liberty2 or Independence — which fits you?
Both give you continuous flow and pulse in one American-made unit. The Liberty2 is the light, carry-anywhere portable; step up to the Independence for higher continuous flow, dual hot-swap batteries, and 24/7 capacity.
| Oxlife Liberty2 | Oxlife Independence | |
|---|---|---|
| Type | Portable | Transportable |
| Continuous flow | 0.5–2.0 LPM | 0.5–3.0 LPM |
| Pulse settings | 1–10 | 0.5–6 |
| Weight (unit) | 6.35 lb | 16.7 lb |
| Longest runtime | up to 4h 30m | up to 6h (two batteries) |
| Dual battery | No | Yes |
| FAA / FDA | Yes / Yes | Yes / Yes |
| Price | from $2,995 | from $3,195 |
Details
What is the Oxlife Liberty2?
The Oxlife Liberty2 is a lightweight portable oxygen concentrator that delivers both continuous flow (0.5–2.0 LPM) and ten pulse settings in a single 6.35 lb unit. It's one of the few true portables — light enough to carry on your shoulder — that still offers continuous-flow oxygen, and it's made in the USA by O2 Concepts.
It's built for oxygen users who need continuous flow but want a unit they can actually carry. If pulse dose alone covers your prescription, a lighter pulse-only portable may suit you — ask us and we'll help you decide.
Who it's for
- Continuous-flow users who want to stay mobile — up to 2.0 LPM in a 6.35 lb unit you carry, not wheel.
- Users who need both delivery types — continuous for sleep or steady needs, pulse on the move — from one portable.
- Travelers — FAA-approved for flights, so continuous-flow oxygen can go in the cabin with you.
Confirm your prescription, flow type, and required setting with your clinician.
Technical specifications
| Oxygen delivery | Continuous flow + pulse dose |
| Continuous flow | 0.5 – 2.0 LPM (0.5 LPM steps) |
| Pulse settings | 1–10 (8–80 mL bolus) |
| Oxygen concentration | 87% – 95% |
| Weight | 6.35 lb unit · about 7.5–8 lb with battery |
| Dimensions | 9.9" × 9.9" × 3.8" |
| Battery | Single-bay, user-swappable (one battery at a time) |
| Battery runtime | up to 4h 30m pulse setting 1 · up to 3h 15m continuous at 0.5 LPM |
| Recharge time | under 2.5 hours (AC or DC) |
| Noise level | about 44 dB(A) at setting 2 |
| Display | Color LCD |
| CPAP compatible | Yes |
| Power | AC 100–240V (worldwide) + DC car charger |
| Origin | Made in the USA |
| Delivery type | Continuous flow + pulse dose |
| Certifications | FAA-approved for flights · FDA-cleared (prescription required) |
* Battery cell counts are not published by O2 Concepts; figures follow the Oxlife Liberty2 spec sheet — confirm details for your unit with our team.
Accessories & replacement parts
Genuine O2 Concepts parts keep your Liberty2 running for years — all available from American Oxygen:
- Spare battery — single-bay and user-swappable, so a charged spare doubles your time away from an outlet.
- Intake filters — the included set gets you started; replacements available.
- AC wall supply & DC car charger — replacements and spares.
- Carry bag & cannulas — genuine accessories.
What's included
Oxlife Liberty2 concentrator, rechargeable battery, AC wall power supply, DC car charger, carry bag, nasal cannula, accessory bag, and user manual. Sold by American Oxygen in Doral (Miami), FL with nationwide U.S. shipping and warranty support.
Why buy from American Oxygen
- Authorized O2 Concepts dealer — genuine, new, U.S.-made units only, no gray-market imports.
- O2 Concepts warranty: 3 years on the device, 1 year on sieve columns, 1 year on the battery.
- Genuine parts & sieve columns available so your unit keeps running for years.
- Doral (Miami) pickup or fast nationwide shipping, free over $99.
Frequently asked questions
Does the Liberty2 really do continuous flow?
Yes. It delivers true continuous flow from 0.5 to 2.0 LPM in 0.5 steps, plus ten pulse settings — unusual in a portable this light at 6.35 lb. That makes it suitable for many steady and sleep needs a pulse-only unit can't serve.
How long does the Liberty2 battery last?
In pulse mode, up to 4h 30m on setting 1. In continuous mode, up to about 3h 15m at 0.5 LPM, coming down as the flow rises. The battery is single-bay and user-swappable — carry a charged spare for longer days.
Is the Liberty2 approved for airline travel?
Yes. The Liberty2 is FAA-approved for use on commercial flights and travels in the cabin with you. Airlines typically ask for advance notice and enough charged batteries for about 150% of your flight time.
Do I need a prescription to buy it?
Yes. The Liberty2 is an FDA-cleared prescription medical device. American Oxygen can help you understand what's needed — just ask when you call.
Is this a new unit with warranty?
Yes. American Oxygen is an authorized O2 Concepts dealer. Every Liberty2 is a genuine, new, U.S.-made unit backed by the O2 Concepts manufacturer warranty — 3 years device, 1 year sieve columns, 1 year battery — plus our local support.
Want continuous flow you can actually carry? We'll help you choose.
Tell us your prescribed flow type and setting and we'll match you to the right Oxlife — just call.
Call (786) 755-80632 reviews for O2 Concepts Oxlife Liberty2 Portable Concentrator
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Jorge Silva –
El equipo ha cumplido correctamente con el requerimiento medico indicado. Es un equipo especial por su capacidad, ya que ofrece hasta 10 flujos de pulso y 2 litros en modo continuo. Su funcionamiento es estable y confiable para uso diario.
Joe –
This unit has met the medical requirement it was prescribed for. The dual capability with up to 10 pulse settings and 2 LPM continuous flow makes it a very capable portable concentrator. It performs consistently and gives peace of mind, because you never know when you may need that extra capacity.