Introduction
This manual provides essential information for the safe and effective use of the NT-02 6360mAh removable battery, designed specifically as a replacement part for the VARON Portable Oxygen Concentrator NT-02. Please read this manual thoroughly before using the battery to ensure proper handling and to maximize its lifespan.

Setup and Installation
This section details the steps for installing and removing the NT-02 replacement battery from your oxygen concentrator.
Battery Installation
- Ensure the oxygen concentrator is powered off and disconnected from any power source.
- Locate the battery compartment on the oxygen concentrator.
- Align the battery with the compartment, ensuring the connectors match.
- Gently slide the battery into the compartment until it clicks securely into place.
Battery Removal
Follow these steps for easy battery removal:
- Ensure the oxygen concentrator is powered off and disconnected from any power source.
- Lay the oxygen concentrator horizontally.
- Pull the trigger or release latch located near the battery compartment (Step 1 in Figure 2).
- Push the battery in the direction of the arrow to remove it from the concentrator (Step 2 in Figure 2).

Initial Charging
Before first use, fully charge the battery. The battery is only intended for supporting the oxygen generator and charging of oxygen generator. Use only the charging method specified by the manufacturer of your oxygen concentrator. The adapter for charging is not included with the battery and should be the one provided with your NT-02 oxygen concentrator.
Operation
Once installed and charged, the battery will power your NT-02 Portable Oxygen Concentrator. The battery life will vary depending on the oxygen flow rate setting of your concentrator. Higher flow rates will consume battery power more quickly.
Monitor the battery indicator on your oxygen concentrator to determine the remaining charge. Recharge the battery as needed to ensure continuous operation.
Maintenance and Safety Precautions
Proper maintenance and adherence to safety guidelines are crucial for the longevity and safe operation of your battery.
- Keep Dry: Always ensure the battery is kept in a dry environment. Avoid exposure to water or high humidity.
- Storage Temperature: Do not store the battery above 60°C (140°F).
- Charging: Only use the charging method specified by the oxygen concentrator manufacturer.
- Replacement: Only replace with the same model battery.
Safety Warnings
WARNING!
- DO NOT ATTEMPT TO DISASSEMBLE, OPEN, OR SERVICE THE BATTERY PACK.
- DO NOT CRUSH, PUNCTURE, SHORT EXTERNAL CONTACT, OR DISPOSE OF IN FIRE OR WATER.
- DO NOT STORE THE BATTERY IN HIGH TEMPERATURE (ABOVE 60 °C) OR HUMIDITY ENVIRONMENT.
- NO OPEN FLAMES: Keep the battery away from open flames.


Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Battery not powering concentrator | Battery not fully charged, improperly installed, or faulty. | Ensure battery is fully charged. Re-install the battery correctly. If issues persist, contact customer support. |
| Battery not charging | Charging adapter not connected, faulty adapter, or battery issue. | Verify charging adapter connection. Ensure you are using the correct adapter for the NT-02 concentrator. |
| Unsure about compatibility | Attempting to use with a different model oxygen concentrator. | This battery is specifically designed for the VARON NT-02 Portable Oxygen Concentrator. It is NOT compatible with the NT-01 model. |
Specifications
| Feature | Detail |
|---|---|
| Model | NT-2 (8-core version) Backup Battery |
| Weight | 515g |
| Electrical Energy | 91.6Wh |
| Nominal Voltage | 14.4V |
| Capacity | 6360mAh |
| Charging Limit Voltage | 16.8V |
| Size (LxWxH) | 18.3 x 9.2 x 3.3 cm |
| Battery Included | Yes (This product is the battery itself) |
| Certification | CE |

Warranty and Support
This product is covered by a service commitment from VARON Oxygen Machine Official Store. For any issues, questions, or warranty claims, please contact the seller directly through the platform where you purchased the product. Ensure you have your purchase details readily available.
For general inquiries or technical support, refer to the official VARON Oxygen Machine Official Store for contact information.
User Tips
- Compatibility Check: Always confirm that this battery (NT-02 Backup Battery) is compatible with your specific oxygen concentrator model (VARON NT-02). It is not compatible with the NT-01 model.
- Battery Duration: The actual operating time of the battery will vary based on the oxygen flow rate you set on your concentrator. Higher flow rates will result in shorter battery life.
- Charging Adapter: Remember that the charging adapter is not included with the battery. Use the original adapter that came with your NT-02 oxygen concentrator.