New Inogen One G4 Portable Oxygen System - 4 Cell Single Battery
- Brand
- Inogen
- SKU:
- IS-400-3Y
- Condition:
- New
- Availability:
- In Stock
- Weight:
- 6.00 LBS
- Shipping:
- Free Shipping
INOGEN ONE G4 · NEW
Inogen One G4 portable oxygen concentrator
Inogen One G4 is a portable pulse-dose oxygen concentrator for prescribed supplemental oxygen. It concentrates oxygen from room air and delivers a pulse when an inhalation is detected, combining a compact enclosure with rechargeable battery operation.
This new listing is offered by Bemes under SKU IS-400-3Y, with a six-month Bemes warranty. Explore model features, equipment details, compatible accessories, and support resources below.
Pulse-dose oxygen for portable use
The G4 provides pulse settings 1–3. These are device settings, not liters per minute of continuous flow. A clinician should confirm that its delivery pattern meets the patient’s oxygen needs during the activities for which it is prescribed.
The concentrator supplies supplemental oxygen without refillable oxygen cylinders. It does not provide ventilatory assistance or a continuous oxygen stream.


G4 battery and package options
4-cell single battery included. A larger battery can extend time away from external power, while a smaller battery reduces the carried package size.
Runtime changes with the selected setting, breathing pattern, battery age, and environmental conditions. Plan charging and spare power around the prescribed use rather than a single advertised maximum.
Clear controls and oxygen status information
The display presents the selected setting and equipment status, including battery information. Audible and visual alerts communicate operating conditions that need attention.
The prescribed setting and response to alarms should be reviewed with the care team. The G3, G4, and G5 have different delivery capabilities and accessories, even where the product names appear similar.


Power, carrying accessories, and ongoing care
Compatible AC and DC power accessories support home charging and vehicle use. A model-specific carrying bag helps organize the portable system without covering its ventilation openings.
Select the correct replacement columns, filters, batteries, and cannula for this exact model. Follow the applicable cleaning and maintenance instructions, and ask Bemes about the parts and service resources available for your unit.
PRODUCT REFERENCE
Inogen One G4 specifications
| Model | Inogen One G4 |
|---|---|
| Condition / SKU | New / IS-400-3Y |
| Delivery | Pulse-dose supplemental oxygen |
| Pulse settings | 1–3; not equivalent to L/min |
| Continuous flow | Not provided |
| Power options | Compatible AC supply, DC cable, rechargeable battery |
| Battery package | 4-cell single battery included. |
| Patient connection | Model-compatible nasal cannula |
| Model family | G4; accessories are model-specific |
| Bemes warranty | Six-month warranty |
Model reference information: confirm the supplied configuration and use the applicable manufacturer instructions. Battery performance depends on battery condition and operating settings; shipping dimensions are not device dimensions.
YOUR EQUIPMENT PACKAGE
Your Inogen One G4 equipment package
Inogen One G4
New equipment, Bemes SKU IS-400-3Y.
Battery configuration
4-cell single battery included.
Device documentation
Ask about the applicable user manual, biomedical service paperwork, and service stickers supplied for your equipment records.
Accessories and consumables
Compatible patient connections, replacement consumables, mounting equipment, and optional data accessories can be purchased separately.
Additional compatible consumables and accessories may be purchased separately. Contact Bemes for help matching accessories to your Inogen One G4 configuration.
BEMES EQUIPMENT SUPPORT
Six-month warranty
This Inogen One G4 includes a six-month Bemes warranty. Contact our team for the coverage terms and service process.

ANSWERS BEFORE YOU ORDER
Inogen One G4 frequently asked questions
1. Does the G4 provide continuous-flow oxygen?
No. It is a pulse-dose concentrator. A numbered setting does not equal the same number of liters per minute on a continuous-flow system.
2. Which battery comes with this listing?
4-cell single battery included.
3. Can I use it while sleeping?
Use during sleep requires assessment and instructions from the prescribing clinician. Do not assume every portable pulse-dose concentrator meets a patient’s sleeping oxygen needs.
4. Can I connect it to CPAP or a ventilator?
Do not assume compatibility. Pulse-dose oxygen is not a substitute for a prescribed continuous-flow oxygen source; any equipment connection must be specifically supported and clinician-approved.
5. Does it need oxygen tank refills?
No. It concentrates oxygen from ambient air. It still needs power, appropriate maintenance, and a backup plan arranged with the care team.
6. Do we take insurance?
Thank you for considering Bemes. We do not accept insurance or bill insurance providers. Purchases are paid directly by the customer. Call 866-490-1609 for help with pricing and ordering.
7. How can I get support for my Inogen One G4?
Contact Bemes at 866-490-1609 with your Inogen One G4 model, SKU, and equipment questions. Our team can help with purchasing details, compatible accessories, and service availability. Model-specific repair and rental links appear below when available.
8. What warranty comes with this product?
This Inogen One G4 includes a six-month Bemes warranty. Contact our team for the coverage terms and service process.
LEARN FROM INOGEN
Inogen One G4 manufacturer videos
Official Inogen videos. Refer to the applicable user manual and your clinical team for prescribed setup and use.
INOGEN ONE G4 EQUIPMENT SUPPORT
What makes our service experts great.
Help your organization identify the right Inogen One G4 equipment package and model-specific support for purchasing and service.
Review Inogen One G4 documentation, compatible patient accessories, power requirements, and the equipment package before you order.
We care about clear answers and practical equipment support. Talk with us about your Inogen One G4 questions and compatible accessories.
From your first inquiry to questions about accessories or repairs, our team helps you work through the details of your Inogen One G4 equipment needs.
