The Liberty 2: The Smallest Continuous Flow Portable Oxygen Concentrator on the Market
If you’ve been searching for the smallest POC that offers both portability and performance, the Liberty 2 by O2 Concepts is the breakthrough you’ve been waiting for. This small oxygen machine is redefining what it means to stay active, independent, and mobile—without sacrificing the medical-grade oxygen support you need.
Available now at Liberty Medical, the Liberty 2 is the smallest continuous flow portable oxygen concentrator on the market. This compact, FAA-approved unit is engineered to deliver powerful oxygen therapy in both continuous and pulse flow modes—all while weighing under 5 pounds. Whether you want to rent or purchase the Liberty 2, this lightweight oxygen machine is the perfect choice for travel, errands, or everyday life.
Looking for a portable oxygen small enough to go everywhere you do? Explore the Liberty 2 today and discover the freedom it offers.
What Makes the Liberty 2 the Smallest POC with Continuous Flow
The Liberty 2 delivers more than just portability. It provides dual oxygen delivery modes—up to 2 LPM continuous flow and pulse dose—making it one of the most versatile and powerful portable oxygen options available in its size class.
- Weight: 4.9 lbs with standard battery
- Battery Life: Up to 8 hours
- Flow Settings: 1–6 pulse and 0.5–2 LPM continuous
- FAA Approved: Yes, for commercial airline use
- Noise Level: Extremely quiet operation
This small oxygen machine is ideal for active users who want true continuous flow without bulky equipment. The compact size and whisper-quiet motor make it easy to use in public or while traveling.
Who Should Choose the Liberty 2?
Whether you’re managing COPD, recovering from surgery, or maintaining an active lifestyle, the Liberty 2 is designed to support your oxygen therapy needs with complete portability. It’s ideal for:
- Travelers looking for a portable oxygen small enough for overhead bins
- Patients who require continuous flow oxygen on the go
- Seniors who want a lightweight oxygen machine with simple controls
- Anyone who needs a quiet, discreet small oxygen machine for daily use
Want to try before you buy? Rent the Liberty 2 and experience its unmatched convenience.
Portability Meets Performance
The Liberty 2 breaks barriers by being the only smallest POC with continuous flow, combining high performance and portability into a compact footprint. Its sleek design, shoulder strap compatibility, and long battery life make it a go-to option for patients who are always on the move.
Pair it with our oxygen carry bags for even more travel-friendly functionality. Flying soon? Learn how to travel with FAA-approved oxygen devices and prepare confidently with your Liberty 2.
Compare the Liberty 2 to Other Units
If you’ve been considering popular POCs like the Inogen One G5 or the Oxlife Independence, you’ll quickly see why the Liberty 2 leads in size, weight, and performance. Those models may offer pulse flow or hybrid settings, but only the Liberty 2 packs true continuous flow into the smallest POC body available today.
Check out our guide to top-rated portable oxygen concentrators to see how it stacks up.
FAA Approved for Air Travel
The Liberty 2 is fully approved by the Federal Aviation Administration for in-flight use. Lightweight and airline-compliant, it fits easily in overhead bins and meets TSA standards for domestic and international travel.
Built by O2 Concepts, Trusted by Liberty Medical
The Liberty 2 is proudly built by O2 Concepts, a leading name in portable oxygen technology. At Liberty Medical, we’re proud to be an authorized distributor offering full support, fast delivery, and expert guidance.
Need accessories? We carry a full line of oxygen accessories, including oxygen cannulas, batteries, filters, and more.
Rent or Buy the Liberty 2 Today
Whether you’re looking to rent for a vacation or purchase your forever unit, the Liberty 2 is ready to ship. Visit the product page for our best prices on the smallest continuous flow POC available, or check out our pre-owned POC inventory for deals on certified used models.
We also offer a buyback program if you’re ready to upgrade or no longer need your current concentrator.
Conclusion: The Smallest Oxygen Machine With the Biggest Impact
The Liberty 2 is more than a portable oxygen device—it’s a game-changer for anyone who needs reliable oxygen on the go. With unmatched portability, true continuous flow, FAA approval, and long-lasting battery life, it earns its title as the smallest POC with the most freedom built in.
Explore the Liberty 2 now or talk to an oxygen specialist to get started.
Have Questions? We’re Here to Help.
Email: info@traveloxygen.com
Phone: 800-375-6060
Liberty Medical offers purchasing, rentals, and buybacks for all portable oxygen concentrators. Let us help you find the smallest POC to match your lifestyle today.