Accessories-Mall
New Inogen G4 BA-408 Battery
New Inogen G4 BA-408 Battery
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NEW Genuine BA-408 Double Extended Life Battery for Inogen G4 & OxyGo FIT
This BA-408 replacement battery is designed for the Inogen G4 and compatible OxyGo FIT portable oxygen concentrators. It is a new genuine battery with an 8-cell design and double extended life capacity.
The battery uses Li-ion technology and provides a 14.4V voltage with a 6500mAh / 93.6Wh capacity. It is a practical replacement option for an old, worn, or damaged BA-408 battery.
If your original battery no longer holds a charge or its operating time has become shorter, this BA-408 replacement battery can help restore the battery capacity of your compatible device.
Key Features
- New genuine BA-408 battery
- Designed for compatible Inogen G4 and OxyGo FIT devices
- 8-cell double extended life battery
- Li-ion rechargeable battery
- Battery voltage: 14.4V
- Battery capacity: 6500mAh / 93.6Wh
- Compatible with BA-408 and 41NR19/66-2
- 12-month warranty
Compatible Devices
This BA-408 battery is compatible with:
- Inogen G4 Portable Oxygen Concentrator
- OxyGo FIT Portable Oxygen Concentrator
Please check your original battery model and part number before ordering. Compatibility may vary by device configuration.
Compatible Battery Part Numbers
This replacement battery is compatible with the following part numbers:
- BA-408
- 41NR19/66-2
Product Specifications
| Product Type | Replacement Battery |
| Battery Model | BA-408 |
| Battery Type | Li-ion |
| Voltage | 14.4V |
| Capacity | 6500mAh / 93.6Wh |
| Cell Configuration | 8-Cell |
| Condition | New Genuine |
| Compatible Part Numbers | BA-408, 41NR19/66-2 |
| Warranty | 12 Months |
Double Extended Life Battery
The BA-408 uses an 8-cell design with a 6500mAh / 93.6Wh capacity. Compared with a standard battery, this double extended life version is designed to provide longer battery operation between charges when used with a compatible device.
It is suitable for users who need a replacement battery for their compatible Inogen G4 or OxyGo FIT portable oxygen concentrator.
Easy Battery Replacement
This battery provides a replacement solution when your original BA-408 battery has reduced capacity, drains quickly, or no longer works properly.
Before purchasing, please check the label on your original battery. Confirm the BA-408 or 41NR19/66-2 part number, voltage, capacity, and device model to make sure this battery matches your equipment.
NEW Genuine BA-408 Double Extended Life Battery for Inogen G4 & OxyGo FIT
This BA-408 replacement battery is designed for the Inogen G4 and compatible OxyGo FIT portable oxygen concentrators. It is a new genuine battery with an 8-cell design and double extended life capacity.
The battery uses Li-ion technology and provides a 14.4V voltage with a 6500mAh / 93.6Wh capacity. It is a practical replacement option for an old, worn, or damaged BA-408 battery.
If your original battery no longer holds a charge or its operating time has become shorter, this BA-408 replacement battery can help restore the battery capacity of your compatible device.
Key Features
- New genuine BA-408 battery
- Designed for compatible Inogen G4 and OxyGo FIT devices
- 8-cell double extended life battery
- Li-ion rechargeable battery
- Battery voltage: 14.4V
- Battery capacity: 6500mAh / 93.6Wh
- Compatible with BA-408 and 41NR19/66-2
- 12-month warranty
Compatible Devices
This BA-408 battery is compatible with:
- Inogen G4 Portable Oxygen Concentrator
- OxyGo FIT Portable Oxygen Concentrator
Please check your original battery model and part number before ordering. Compatibility may vary by device configuration.
Compatible Battery Part Numbers
This replacement battery is compatible with the following part numbers:
- BA-408
- 41NR19/66-2
Product Specifications
| Product Type | Replacement Battery |
| Battery Model | BA-408 |
| Battery Type | Li-ion |
| Voltage | 14.4V |
| Capacity | 6500mAh / 93.6Wh |
| Cell Configuration | 8-Cell |
| Condition | New Genuine |
| Compatible Part Numbers | BA-408, 41NR19/66-2 |
| Warranty | 12 Months |
Double Extended Life Battery
The BA-408 uses an 8-cell design with a 6500mAh / 93.6Wh capacity. Compared with a standard battery, this double extended life version is designed to provide longer battery operation between charges when used with a compatible device.
It is suitable for users who need a replacement battery for their compatible Inogen G4 or OxyGo FIT portable oxygen concentrator.
Easy Battery Replacement
This battery provides a replacement solution when your original BA-408 battery has reduced capacity, drains quickly, or no longer works properly.
Before purchasing, please check the label on your original battery. Confirm the BA-408 or 41NR19/66-2 part number, voltage, capacity, and device model to make sure this battery matches your equipment.
| Model No | BA-408 |
| Warranty | 1 Year |
🔋 Lithium-Ion Battery Conditioning
For optimal electrochemical performance, new lithium-ion batteries should undergo 2–3 complete charge and discharge cycles before reaching full capacity.
This stabilization phase allows the internal cell chemistry to achieve balanced ion distribution, ensuring maximum runtime, stable voltage output, and extended cycle life.
After this initial conditioning period, no further full discharge cycles are required.
🛡 Premium Warranty Protection
- 12-Month Limited Manufacturer Warranty
- Up to 30-Day Return Guarantee (Policy Based)
- Replacement for defective or misrepresented items
- Dedicated customer service response within 24 hours
🚚 Professional Shipping Standards
- Orders placed Monday–Friday are processed within 1–2 business days. Orders placed on weekends are processed the following Monday.
- Tracking information appears in your order within 1–2 business days after dispatch.
- Transit time varies by region and logistics carrier
- Please verify your shipping address before order confirmation
- Address changes are not possible once shipment is dispatched
📌 Product-Specific Notice
📩 Customer Care Commitment
We are committed to delivering professional-grade battery solutions and responsive after-sales service. If you experience any issues, please contact our support team before leaving feedback.
⚕ Safety & Compatibility Notice — Medical Device Battery
This is a replacement battery for the compatible medical device model(s) listed above. It is not a finished medical device. The following guidelines apply:
| Who should install | Qualified biomedical technicians or authorized service personnel following the device manufacturer's service manual. AED/defibrillator batteries must comply with your facility's maintenance protocol. |
| After installation | Perform a full device self-test per the manufacturer's guidelines. Record the replacement date and result in the device maintenance log. |
| Emergency use | In a medical emergency, always contact local emergency services (911 in the US). This product does not replace emergency response services. |
| Liability | Accessories-Mall supplies replacement batteries for maintenance purposes. We are not liable for outcomes resulting from improper installation or failure to perform post-installation device testing. |
Not sure this battery fits? Send us your device model number — we'll confirm before you order.
Cao Chuanping
Power Systems Consultant · 8+ years in replacement battery sourcing & evaluation · View profile →
