1. Product Overview
This manual provides essential information for the safe and effective use of your ISUNOO DBO-1000A Li-ion battery. This battery is designed as a compatible replacement for DORO 1372, DORO 2404, and DORO 1370 mobile phones.


2. Specifications
| Feature | Detail |
|---|---|
| Brand Name | ISUNOO |
| Model Number | DBO-1000A |
| Compatible Brand | DORO (for 1372 / 2404 / 1370) |
| Battery Type | Li-ion |
| Capacity | 1000mAh |
| Battery Voltage | 3.7V (Operating), 4.2V (Chargeable) |
| Energy | 3.7Wh |
| Quality Certification | CE |
| Rechargeable | Yes |
| High-concerned chemical | None |
| Weight | Approx. 21.1g |
| Dimensions | Approx. 34mm x 50mm |


3. Installation and Setup
Before installing the new battery, ensure your mobile phone is powered off. Refer to your phone's original user manual for specific instructions on opening the battery compartment.
- Carefully remove the back cover of your DORO mobile phone.
- If an old battery is present, gently lift it out from its compartment.
- Align the gold contact pins of the new ISUNOO DBO-1000A battery with the corresponding terminals in the phone's battery compartment.
- Gently press the battery into place, ensuring it is seated securely and the contacts are firm.
- Replace the phone's back cover.
- Power on your phone. It is recommended to fully charge the battery before its first use.

4. Operation and Charging
The DBO-1000A battery is a rechargeable Li-ion battery designed for optimal performance with your DORO phone.
4.1 Initial Use
For the best experience, fully charge the battery before its first use. This helps calibrate the battery's charge indicator.
4.2 Charging Guidelines
- Use only compatible chargers designed for your DORO mobile phone.
- The battery's chargeable voltage is 4.2V. Ensure your charger meets this specification.
- Avoid charging in extreme temperatures. Optimal charging occurs at room temperature.
- The battery features a protector chip for stable operation and double protection against over-charge, over-discharge, over-current, and over-voltage.
4.3 Battery Performance
This battery is manufactured with 0 cycles and 100% original cells, ensuring real capacity and reliable performance from the start.
5. Maintenance and Care
Proper care will extend the life and performance of your battery.
- Temperature: Avoid exposing the battery to extreme heat or cold. High temperatures can degrade battery life and performance.
- Storage: If storing the battery for an extended period, keep it partially charged (around 50%) in a cool, dry place.
- Cleaning: Keep the battery contacts clean. If necessary, gently wipe them with a dry, soft cloth.
- Avoid Physical Damage: Do not puncture, drop, or disassemble the battery. Physical damage can lead to malfunction or safety hazards.
6. Troubleshooting
If you experience issues with your battery, consider the following common solutions:
- Battery Not Charging:
- Ensure the charger is properly connected to both the phone and a power source.
- Check if the charging cable or adapter is damaged. Try a different compatible charger.
- Verify that the battery contacts in the phone and on the battery are clean and free of debris.
- Restart your phone.
- Short Battery Life:
- Check for background applications consuming excessive power.
- Reduce screen brightness or adjust power-saving settings on your phone.
- Ensure the battery has been fully charged.
- Battery performance naturally degrades over time with usage cycles.
- Phone Not Powering On:
- Ensure the battery is correctly installed and fully charged.
- Try charging the phone for at least 30 minutes before attempting to power it on.
If problems persist, consult your phone's manufacturer support or a qualified technician.
7. Safety Information
WARNING:
- May explode if disposed of in fire or short circuit.
- Do not disassemble, crush, or puncture the battery.
- Do not expose to high temperatures (above 60°C / 140°F) or direct sunlight.
- Keep away from water and moisture.
- Keep out of reach of children.
- Use only with specified mobile phone models (DORO 1372 / 2404 / 1370).
7.1 Proper Disposal
Do not dispose of the battery with household waste. This product contains a rechargeable Li-ion battery and should be recycled or disposed of according to local environmental regulations. The crossed-out wheeled bin symbol indicates that the product must not be disposed of with unsorted municipal waste.

8. User Tips
- Initial Charge: Many users recommend a full charge before the very first use to optimize battery performance.
- Installation: Some users have noted that the battery comes with a "set for installation," which might include tools to help open the phone. If provided, utilize these tools carefully.
- Capacity: The battery is noted for its "real capacity," suggesting it meets its advertised 1000mAh rating.
9. Warranty and Support
For warranty information or technical support, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.





