1. Introduction
This manual provides essential information for the safe and effective use of your BORNMIO CS-BS3455PX 12V 3000mAh Ni-MH replacement battery. Please read these instructions carefully before use and retain them for future reference.
This battery is designed as a replacement for various Bosch 12V power tools and compatible with original battery part numbers such as BAT043, BAT045, 2 607 335 683, 2 607 335 676, 2 607 335 542, and 2 607 335 487. It is compatible with tool models including 23612, GSR 12V, GSR 12-2, GSB 12 VE-2, GSR 12 VE-2, GSB 12, 3455, and GDR 12V.
2. Safety Instructions
WARNING: Failure to follow these safety instructions may result in fire, electric shock, or other serious injury.
- Read Instructions: Always read all instructions before using the battery.
- Initial Charge: New battery packs must be fully charged before first use.
- Avoid Disassembly: Do not attempt to disassemble, open, or service the battery pack. Disassembly voids the warranty and can cause damage or injury.
- Correct Replacement: Replace only with the battery pack designated for this product. Using an incompatible battery may cause damage or fire.
- Physical Damage: Do not crush, puncture, or short external contacts. Avoid dropping the battery.
- Heat and Fire: Do not expose the battery to fire or water. Do not store above 60°C (140°F). High temperatures can cause explosion or leakage.
- Disposal: Dispose of used batteries according to local regulations. Do not dispose of in fire or water.
- Label Integrity: The warranty is void if the product label is removed.

Image: Bottom view of the BORNMIO CS-BS3455PX battery. This view displays important safety warnings and product specifications printed on the label, including cautions against disassembly, exposure to high temperatures, and improper disposal.
3. Setup and Installation
This section outlines the steps for installing the BORNMIO replacement battery into your compatible power tool.
- Inspect the Battery: Before installation, visually inspect the battery for any signs of damage, such as cracks, swelling, or corrosion on the terminals. Do not use a damaged battery.
- Remove Old Battery (if applicable): Ensure the power tool is turned off. Locate the battery release latches on your power tool. Press the latches and slide the old battery out of the tool.
- Insert New Battery: Align the BORNMIO replacement battery with the battery slot on your power tool. Slide the battery firmly into place until you hear a click, indicating that the latches have engaged and the battery is securely seated.
- Verify Connection: Gently tug on the battery to ensure it is locked into the tool and will not accidentally detach during operation.

Image: Front and side view of the BORNMIO CS-BS3455PX replacement battery. This image shows the overall shape and design of the battery, including the top connector and the red release buttons on the sides, which are typical for installation into power tools.
4. Operating Instructions
4.1 Charging the Battery
For optimal performance and longevity, it is crucial to charge the battery correctly.
- Use Compatible Charger: Always use a charger specifically designed for 12V Ni-MH batteries. Refer to your power tool's original charger manual for compatibility.
- Connect to Charger: Slide the battery into the charging slot of the compatible charger. Ensure it is securely connected.
- Monitor Charging: Observe the charger's indicator lights. These lights typically show the charging status (e.g., charging, fully charged, error).
- Full Charge: Allow the battery to charge fully before its first use and whenever it is depleted. The charger will indicate when charging is complete.
- Avoid Overcharging: While modern chargers often have overcharge protection, it is good practice to remove the battery once fully charged to prevent unnecessary heat buildup.
4.2 Using the Battery with Your Tool
Once installed and charged, the battery powers your compatible 12V Bosch power tool.
- Tool Operation: Operate your power tool according to its specific instruction manual. The battery provides the necessary power for the tool's functions.
- Battery Life: The 3000mAh capacity provides extended runtime for your tasks. Actual runtime will vary based on the tool's power consumption and the intensity of use.
- Low Power Indication: If your tool's performance decreases or it stops working, the battery may be depleted and require recharging.

Image: Bottom view of the BORNMIO CS-BS3455PX battery. This perspective highlights the electrical contact terminals that connect to the power tool or charger, along with the product label detailing model number, part numbers, rating, and battery type.
5. Maintenance
Proper maintenance ensures the longevity and performance of your battery.
- Cleaning: Keep the battery terminals clean and free from dirt, dust, and debris. Use a dry cloth to wipe them if necessary. Do not use liquids or solvents.
- Storage: When not in use for extended periods, store the battery in a cool, dry place, away from direct sunlight and extreme temperatures. Ideally, store Ni-MH batteries with a partial charge (around 50%) to prevent deep discharge.
- Avoid Extreme Temperatures: Do not expose the battery to temperatures below 0°C (32°F) or above 45°C (113°F) for prolonged periods, as this can degrade performance and lifespan.
- Regular Use: For best results, use and recharge the battery regularly. Infrequent use can sometimes lead to a decrease in capacity over time.
6. Troubleshooting
If you encounter issues with your BORNMIO replacement battery, consider the following troubleshooting steps:
- Battery Not Charging:
- Ensure the battery is properly seated in the charger.
- Verify the charger is plugged into a working power outlet.
- Check if the charger is compatible with 12V Ni-MH batteries.
- Inspect battery terminals and charger contacts for dirt or damage. Clean if necessary.
- Tool Not Powering On/Weak Performance:
- Ensure the battery is fully charged.
- Verify the battery is securely installed in the tool.
- Check if the battery terminals or tool contacts are clean and free of obstruction.
- If the battery is old, its capacity may have degraded.
- Battery Overheating During Use/Charging:
- Stop using or charging the battery immediately.
- Allow the battery to cool down in a well-ventilated area.
- Ensure the charger is compatible and not faulty.
- If overheating persists, discontinue use and contact support.
If these steps do not resolve the issue, please refer to the Warranty and Support section.
7. Specifications
| Feature | Specification |
|---|---|
| Model Number | CS-BS3455PX |
| Battery Type | Ni-MH (Nickel-Metal Hydride) |
| Voltage | 12.0V |
| Capacity | 3000mAh (3.0Ah) |
| Watt-Hours (Wh) | 36.0Wh |
| Dimensions (L x W x H) | 106.53 x 85.92 x 110.48 mm (4.19 x 3.38 x 4.35 inches) |
| Weight | 825.8 g (1.82 pounds) |
| Certifications | ISO9001, RoHS, CE, UN38.3, MSDS |
| Compatible Tool Models | 23612, GSR 12V, GSR 12-2, GSB 12 VE-2, GSR 12 VE-2, GSB 12, 3455, GDR 12V |
| Compatible Battery Part Numbers | BAT043, BAT045, 2 609 200 306, 2 607 336 002, 2 607 335 709, 2 607 335 692, 2 607 335 684, 2 607 335 683, 2 607 335 676, 2 607 335 542, 2 607 335 487, 2 607 335 471, 2 607 335 463, 2 607 335 455, 2 607 335 454, 2 607 335 442, 2 607 335 441, 2 607 335 430, 2 607 335 429, 2 607 335 416 |
8. Warranty and Support
BORNMIO stands behind the quality of its products. Our batteries have passed strict quality inspection.
If you have any questions or encounter issues with your battery, please contact our customer support. We offer a full refund or a free replacement without any reason for quality-related concerns.
For further assistance, please refer to the contact information provided with your purchase or on the BORNMIO official website.