If supplemental oxygen has just entered the picture, one question comes up almost immediately: can life still go on as before — a trip to the market, a flight to see the grandchildren? That’s the gap a portable oxygen concentrator is built to fill. This guide goes deep on portable units: what makes them different from the machine in your living room, how battery life works, who benefits most, and how the portable models we carry compare to each other.
Table of Contents
- What Makes an Oxygen Concentrator “Portable”?
- Pulse Dose vs Continuous Flow: Why Most POCs Use Pulse Dose
- Battery Life and Charging on the Go
- Who Really Needs a Portable Oxygen Concentrator?
- Flying with a POC: FAA Approval and Airline Rules, in General Terms
- Portable vs Stationary Oxygen Concentrators: A Side-by-Side Look
- Portable Oxygen Concentrator Models We Carry
- Choosing Between Buying and an Oxygen Concentrator on Rent
- Frequently Asked Questions
What Makes an Oxygen Concentrator “Portable”?
Every oxygen concentrator does the same basic job: it pulls in room air, filters out nitrogen, and delivers air far richer in oxygen than the roughly 21% we normally breathe. What separates a portable unit from a stationary one is how it’s packaged and powered, not the underlying science. A true POC is built around three priorities:
- Battery power. It runs on a rechargeable internal battery (plus usually a car/DC adapter), so it isn’t tethered to a wall socket.
- Low weight and a compact footprint. Most portable models fit in a shoulder bag or backpack and are built to be carried or wheeled, unlike a stationary concentrator that stays parked next to a chair or bed.
- Pulse-dose delivery in most models. To stretch battery life and keep the unit small, most portable oxygen concentrators deliver oxygen in short pulses timed to your breathing rather than a constant stream.
Because everything is scaled down to be carried around, a portable oxygen concentrator for home use trades away some of the raw output of a stationary machine for freedom of movement — which is why POCs and stationary concentrators are often used together rather than as a straight replacement for one another.
Pulse Dose vs Continuous Flow: Why Most POCs Use Pulse Dose
This is probably the single most important technical distinction to understand before choosing a portable unit.
Continuous flow delivers a steady, uninterrupted stream of oxygen at a set rate, measured in litres per minute (LPM), regardless of whether you’re inhaling or exhaling. It’s the delivery style almost every stationary home concentrator uses, and it’s generally recommended for sleep, since pulse-triggered devices rely on detecting a breath to fire a dose, and breathing patterns change during sleep.
Pulse dose (also called pulse flow or on-demand delivery) uses a sensor and conserving technology to detect the start of each inhalation and release a short, calibrated burst of oxygen right at that moment, instead of wasting oxygen during exhalation. That efficiency is exactly why it matters for portable devices: a pulse-dose unit can be smaller, lighter, quieter, and stretch far more use out of a single battery charge than a continuous-flow unit the same size.
This is why most portable oxygen concentrator models on the market, including several we stock, are pulse-dose only or offer pulse dose as the primary mode, with continuous flow reserved for larger portable units or stationary machines. If you need oxygen overnight or have higher flow requirements, your doctor may recommend a continuous-flow-capable POC or a stationary concentrator for nighttime use, paired with a lighter pulse-dose unit for daytime mobility.
Battery Life and Charging on the Go
Battery performance is where portable units live or die in real-world use, and it varies by model, battery type, and — importantly — the pulse or flow setting you’re using. A few points worth knowing before comparing specific machines:
- Battery life is tested at fixed settings. Manufacturers typically publish runtime figures at a moderate pulse setting and a standard breathing rate (commonly around 20 breaths per minute). Set the dial higher, or breathe faster during activity, and you’ll get less time per charge.
- Standard vs extended batteries. Many POCs offer two battery options — a lighter “standard” battery for short outings, and a heavier “extended” battery that roughly doubles runtime for longer days away from a power source.
- Recharge time matters as much as runtime. A depleted lithium-ion battery generally needs a couple of hours or more to charge fully, so many users travel with a spare battery already charged.
- You can usually charge on the move. Most portable models accept AC (wall), DC (car outlet), and sometimes airline in-seat power, which makes them practical for road trips and flights.
Rather than quoting one “battery life” figure for the whole category, it’s more useful to compare runtimes model by model, which we’ve done in the table further down. As a rule of thumb, lighter pulse-only units run longer on a standard battery and meaningfully more with an extended one, while units that also support continuous flow tend to run shorter because continuous delivery draws more power.
Who Really Needs a Portable Oxygen Concentrator?
Not everyone on supplemental oxygen needs a portable unit. A POC tends to make the most sense for people who fit one or more of these situations:
- People who are still active and mobile. Walking, errands, family visits, or light exercise are easier when oxygen doesn’t tie you to a stationary machine.
- Frequent or occasional travellers. A battery-powered unit that fits in hand luggage removes one of the biggest barriers to travelling with a respiratory condition.
- Anyone who wants oxygen therapy outside the home. Social events, workplace use, or simply a park bench — a lightweight concentrator makes therapy portable in the truest sense.
- Patients who need a flight-compatible device. Airlines generally won’t allow oxygen cylinders or liquid oxygen on board, so flying with supplemental oxygen usually means a battery-operated POC that meets aviation acceptance criteria (more below).
- Caregivers managing two settings. Many families keep a stationary concentrator for home and night use and add a portable oxygen concentrator for home use during the day — the two are complementary, not either-or.
According to the COPD Foundation, portable concentrators are built the same way as stationary ones but scaled down, which is exactly why the oxygen they generate is lower and why so many rely on pulse delivery to conserve gas. The choice of POC should be guided by your prescribed flow requirement and your doctor’s advice, not just convenience.
Flying with a POC: FAA Approval and Airline Rules, in General Terms
One reason POCs are popular with travellers is that many models are built to meet aviation acceptance criteria set by the US FAA, and airlines elsewhere generally use similar frameworks when deciding what oxygen equipment to allow on board.
A few general points — background only, not a substitute for checking with your airline before you fly:
- The FAA’s acceptance criteria require a POC to be legally marketed under applicable medical device rules and to not interfere with aircraft electronics; compliant devices usually carry a manufacturer label confirming this.
- Airlines typically won’t permit filled oxygen cylinders or liquid oxygen tanks in the cabin, which is precisely why battery-powered portable concentrators are the practical option for flying with oxygen therapy.
- Airlines commonly ask passengers to notify them in advance — often around 48 hours before departure — and to carry enough charged batteries to cover the full flight, with some asking for batteries covering roughly 150% of expected flight time in case of delays.
- Seating restrictions can apply; using a POC in an exit row is typically not allowed.
Rules differ between airlines and can change, so confirm directly with your airline ahead of travel and carry your prescription and the device’s documentation. This section is general orientation, not legal advice.
Portable vs Stationary Oxygen Concentrators: A Side-by-Side Look
If you’re deciding between a portable unit, a stationary one, or both, here’s how the two categories stack up.
| Feature | Portable Oxygen Concentrator | Stationary (Home) Oxygen Concentrator |
|---|---|---|
| Power source | Rechargeable battery, plus AC/DC adapters | Mains electricity only (no battery) |
| Weight & portability | Light enough to carry or wheel; built for travel | Heavier, designed to stay in one place at home |
| Delivery mode | Mostly pulse dose; some models add limited continuous flow | Continuous flow, typically up to around 5 LPM on standard home units |
| Maximum output | Lower, due to compact size and battery limits | Higher and steadier, suited to greater oxygen needs |
| Best suited for | Outings, travel, flights, active daytime use | Overnight use and higher, continuous flow requirements at home |
| Noise level | Generally quieter, smaller compressor | Slightly louder but still designed for indoor/bedroom use |
In practice, many households on long-term oxygen therapy use both: a stationary machine at the bedside for overnight and heavy-use hours, and a portable unit for everything outside those four walls. Browse our full Oxygen Concentrator range to compare stationary and portable options together.
Portable Oxygen Concentrator Models We Carry
We stock a handful of well-established models, each aimed at a slightly different use case — from the lightest possible pulse-only unit to one that also offers continuous flow. Here’s how they compare based on published manufacturer specifications.
| Model | Delivery Mode | Approx. Weight | Battery Runtime (standard battery, moderate setting) | Best For |
|---|---|---|---|---|
| Philips Respironics SimplyGo | Continuous flow (up to 2 LPM) and pulse dose (up to setting 6) | Around 10 lbs (4.5 kg) | Up to roughly 3 hours on the integrated battery | Users who need continuous flow on the move, not just pulse dose |
| Philips Respironics SimplyGo Mini | Pulse dose only (settings 1–5) | Around 5 lbs (2.3 kg) with standard battery; 6 lbs with extended battery | Roughly 4.5 hours on the standard battery; roughly 9 hours with the optional extended battery | The lightest option, ideal for frequent travellers and all-day outings |
| DeVilbiss iGo2 | Pulse dose only (settings 1–5) with auto-adjusting conserver technology | Around 5 lbs (2.3 kg) with battery and carry case | Roughly 3.5 hours at setting 2; up to around 5.5 hours with the long-lasting battery at lower settings | Users wanting a lightweight, wearable-style unit with a long-lasting battery option |
| Oxymed Portable Oxygen Concentrator | Pulse dose | Compact, carry-bag design | See product page for current specifications | Budget-conscious buyers who still want a genuinely portable, battery-powered unit |
All four sit within our Portable Oxygen Concentrator collection, alongside spare batteries and other add-ons under oxygen concentrator accessories, so you can outfit a unit with a second battery or carry case for longer days away from home.
Choosing Between Buying and an Oxygen Concentrator on Rent
Once you know which portable unit fits your routine, the next decision is usually whether to buy outright or explore an Oxygen Concentrator on rent arrangement. Renting suits shorter-term needs — post-hospital recovery, a temporary flare-up, or trying a model before committing — while buying suits patients on long-term therapy using the device daily. We offer both routes through our oxygen concentrator rental and rental service pages, alongside outright purchase.
If budget matters, compare Oxygen Concentrator price across delivery modes rather than assuming portable always costs more — a pulse-only unit like the SimplyGo Mini or iGo2 is often more accessible than a continuous-flow-capable model, since it uses less internal hardware. We also carry a certified pre-owned oxygen concentrator range for buyers wanting a thoroughly inspected, budget-friendly unit. Whichever route you choose, confirm the flow setting and delivery mode against your prescription — a portable oxygen concentrator for home use should match your actual oxygen requirement, not just your budget or travel plans.
Frequently Asked Questions
What does “portable” actually mean for an oxygen concentrator?
A portable oxygen concentrator runs on a rechargeable battery instead of a constant mains connection, and is light enough to carry, wheel, or wear — typically a few kilograms, versus the bulkier footprint of a stationary home unit. Most portable models also use pulse-dose delivery to conserve battery life.
What’s the real difference between pulse dose and continuous flow?
Continuous flow delivers a steady stream of oxygen at a fixed rate regardless of your breathing. Pulse dose detects the start of each inhalation and releases a short, timed burst only then, conserving oxygen and battery power. Most POCs use pulse dose for this reason, while continuous flow is standard on stationary units and generally preferred for overnight use.
How long does a portable oxygen concentrator battery actually last?
It depends on the model and the setting you use. Lightweight pulse-only units typically run roughly four to five hours on a standard battery, and close to double that with an optional extended battery. Continuous-flow-capable portable units tend to run shorter because continuous delivery uses more power. Check the manufacturer’s spec sheet for the exact model you’re considering.
Can I take a portable oxygen concentrator on a flight?
Many POCs are designed to meet aviation acceptance criteria and are commonly used on flights, but airlines set their own policies on notice periods, spare battery requirements, and seating. Confirm with your airline before travel, and carry your prescription and the device’s compliance documentation.
Who should consider a portable oxygen concentrator over a stationary one?
People who remain active, travel regularly, want oxygen therapy outside the home, or need a flight-compatible device generally benefit most from a portable unit. Those with higher continuous oxygen requirements or who mainly need oxygen overnight are often better served by a stationary concentrator, sometimes paired with a portable unit for daytime outings.
Can a portable oxygen concentrator fully replace a stationary home concentrator?
For some patients with lower oxygen requirements, yes. For many others, a portable unit is used alongside a stationary concentrator, particularly if overnight continuous flow at a higher rate is prescribed. Your doctor should confirm whether a portable-only setup meets your prescribed oxygen needs.
How do I charge a portable oxygen concentrator while I’m out?
Most portable models accept AC (wall) and DC (car outlet) power alongside their internal battery, so you can top up at home, in a vehicle, or via in-seat power on some flights. A depleted battery generally takes a couple of hours or more to recharge, which is why many users travel with a charged spare.
Is it better to buy a portable oxygen concentrator or get one on rent?
Renting suits short-term needs — post-hospital recovery, temporary flare-ups, or trying a model before buying — while purchasing suits patients on long-term therapy who’ll use the device daily. Comparing an Oxygen Concentrator on rent against outright purchase, including pre-owned options, helps match the decision to your budget and how long you’ll need the device.
Picking the right portable oxygen concentrator really comes down to matching the delivery mode, weight, and battery life to how you actually live and travel — and that’s easier to work through with someone who can walk you through your prescription and daily routine. Reach out for expert advice or get in touch through our contact page, and we’ll help you find the right fit.