1. Introduction
This manual provides essential information for the safe and effective installation, operation, and maintenance of your NOHON EB-BG781ABY replacement battery. Please read this manual thoroughly before attempting any installation or use.
The NOHON EB-BG781ABY battery is designed as a high-quality, compatible replacement for various Samsung Galaxy S20 series and A52 models, offering enhanced capacity and reliable performance.
2. Safety Precautions
- Do not disassemble, puncture, or modify the battery.
- Avoid exposing the battery to high temperatures or direct sunlight.
- Keep the battery away from water and moisture.
- Do not use the battery if it appears damaged, swollen, or leaking.
- Dispose of old batteries responsibly according to local regulations.
- Installation should be performed by individuals with appropriate technical skills or under professional guidance.
3. Setup and Installation
Your NOHON replacement battery comes with a set of free installation tools to assist with the replacement process. For detailed visual instructions, please scan the QR code provided on the back of the battery packaging to access the official installation video.

Figure 3.1: Easy installation process with included tools.
3.1 Included Tools

Figure 3.2: Free installation tools provided with your NOHON battery.
- Crowbar
- Cross Screwdriver
- B-7000 Glue (or similar Battery Glue)
- Suction Cup (Sucker)
- Disassembly Card
- 3M Adhesive (for securing the battery)
3.2 Installation Video Access
For a step-by-step visual guide, scan the QR code on your battery packaging:

Figure 3.3: Scan for free installation video.
4. Operating Instructions
After successful installation, your NOHON battery is ready for use. This battery features a brand new 0-cycling design, ensuring optimal performance from the first charge.

Figure 4.1: Displaying 'Brand new 0 Cycling Battery' status.
4.1 Initial Use and Charging
- It is recommended to fully charge the battery before its first use.
- Use a compatible charger for your device.
- The battery is designed for long standby time and efficient power conversion (up to 95%).

Figure 4.2: Optimized for long standby time.
4.2 Advanced Technology
The NOHON battery incorporates advanced features for stable and efficient performance:
- Balanced Shunt Technology: Strengthens multi-channel branch current for improved power distribution.
- Upgrade IC Full Core: Provides comprehensive power guard, ensuring optimal electricity usage.
5. Maintenance
Proper maintenance can significantly extend the lifespan and performance of your NOHON battery.
- Avoid Extreme Temperatures: Do not expose the battery to very high or very low temperatures, as this can degrade performance and lifespan.
- Regular Usage: Use your device regularly to keep the battery active. Avoid leaving it fully discharged or fully charged for extended periods.
- Environmentally Friendly: NOHON batteries are made with environmentally friendly lithium-ion materials, ensuring safe and pollution-free operation.

Figure 5.1: NOHON batteries are designed for safety and reliability.
6. Troubleshooting
If you encounter issues with your NOHON replacement battery, consider the following common solutions:
6.1 Battery Not Charging
- Check Connections: Ensure the battery connector is securely seated in the phone's logic board.
- Inspect Charging Port: Verify that your phone's charging port is clean and undamaged.
- Try Different Charger/Cable: Test with a known-good charger and USB cable.
6.2 Rapid Battery Drain
- Recalibrate Battery: Fully charge the phone to 100%, then let it discharge completely until it shuts off. Recharge it fully without interruption. Repeat this cycle 2-3 times.
- Background Apps: Check for apps running in the background that might be consuming excessive power.
- Software Updates: Ensure your phone's operating system is up to date.
6.3 Protection Features
The NOHON battery is equipped with a high-precision PCM protection board manufactured via SMT reflow process. This board includes functions to prevent:
- Overcharge
- Over-discharge
- Overheating
These features ensure the battery operates safely and reliably.
7. Specifications

Figure 7.1: Product detailed information.
| Feature | Description |
|---|---|
| Brand Name | Nohon |
| Model Number | EB-BG781ABY |
| Compatible Brand | SAMSUNG |
| Compatible Models | Samsung Galaxy S20 FE 5G (SM-G781), A52 (SM-A526/DS), S20 Plus, S20+, S20 Ultra (G985F, G988, G981) |
| Battery Type | Lithium Polymer Battery |
| Nominal Capacity | 4500mAh |
| Standard Voltage | 3.86V |
| Quality Certification | CE, ROHS, UL, FCC, MSDS |
| Executive Standard | GB 31241-2014 |
| Origin | Mainland China |
8. Warranty and Support
NOHON offers a commitment to quality and customer satisfaction.
- Free Returns: Enjoy free returns within 90 days of purchase.
- Security & Privacy: Your personal details are protected and not shared with third parties without consent.
For any product-related inquiries, technical assistance, or warranty claims, please contact the seller directly through the platform where you made your purchase. Provide your order details and a clear description of the issue for prompt support.
9. User Tips
- Careful Installation: Take your time during installation. Rushing can lead to damaged connectors or other components. If unsure, seek professional help.
- Battery Calibration: After installing a new battery, it's often beneficial to calibrate it. Charge it to 100%, use it until it shuts off, then charge it fully again. This helps the phone's software accurately read the new battery's capacity.
- Optimal Charging: Avoid frequently charging your phone to 100% and letting it drop to 0%. Keeping the charge between 20% and 80% can help prolong the battery's overall lifespan.
- Software Optimization: Regularly check your phone's battery usage settings to identify and manage apps that consume a lot of power in the background.





