1. Introduction
This user manual provides essential information for the safe and effective use of your Bosch FA103 AGM Motorcycle Battery. Please read these instructions carefully before installation and operation to ensure optimal performance and longevity of the battery. This battery is designed for motorcycles, mopeds, ATVs, jetskis, and snowmobiles.
2. Product Features
- Power Output: 12 V, 100 A, 9 Ah.
- Dimensions: 135 x 75 x 139 mm.
- Weight: 3.05 kg.
- Polarity: Left-right.
- Factory Activated: Ready to use, pre-filled with acid, and newly charged in Europe.
- AGM (Absorbent Glass Mat) Technology: Provides reliable and powerful cold starting, even in winter. Offers high energy availability due to low self-discharge.
- Deep Discharge and Vibration Resistant: Efficient for short-distance trips with frequent stops, as well as for motorsport and off-road use.
- Versatile Application: Suitable for motorcycles (off-road and touring), enduros, scooters, quads, jetskis, snowmobiles, and applications with many electrical consumers.
- Installation Angle: Up to 30° thanks to AGM technology.
- Compatibility: Compatible with Bosch M4F25, JIS BB9-B, BTB9, 12N9-4B-1, Yuasa YB9-B, YTB9, 12N9-4B-1.
- EU Regulation 2019/1148 Compliant: Product with pre-filled acid.

Image: Angled view of the Bosch FA103 AGM Motorcycle Battery, highlighting its compact design and branding.
3. Safety Information
Always prioritize safety when handling batteries. Improper handling can lead to serious injury or damage. Observe the following safety guidelines:
- Wear Protective Gear: Always wear eye protection and gloves when handling the battery.
- Keep Away from Children: Batteries contain corrosive acid and lead. Keep out of reach of children.
- No Open Flames: Keep sparks, open flames, and smoking materials away from the battery. Batteries can produce explosive gases.
- Ventilation: Ensure adequate ventilation when charging or working with batteries.
- Proper Disposal: Do not dispose of batteries in household waste. Recycle them at an authorized collection point. The battery contains lead (Pb).
- Avoid Short Circuits: Do not place metal objects on the battery terminals.
- Acid Contact: In case of contact with battery acid, flush immediately with plenty of water and seek medical attention.

Image: Side view of the Bosch FA103 battery, showing universal safety symbols, including warnings for corrosive materials, explosive gases, and proper disposal.
4. Setup and Installation
The Bosch FA103 AGM Motorcycle Battery is factory-activated, meaning it is pre-filled with acid and charged, ready for immediate use. No initial filling or charging is required.
- Vehicle Compatibility: Before installation, verify the battery's compatibility with your vehicle using the vehicle identification or the mapping list provided by Bosch. Ensure all vehicle-specific restrictions are observed.
- Preparation: Ensure the vehicle's ignition is off and all electrical accessories are disconnected.
- Remove Old Battery: Disconnect the negative (-) terminal first, then the positive (+) terminal of the old battery. Carefully remove the old battery from its compartment.
- Install New Battery: Place the Bosch FA103 battery securely in the battery compartment. The AGM technology allows for an installation angle of up to 30 degrees.
- Connect Terminals: Connect the positive (+) terminal first, then the negative (-) terminal. Ensure connections are tight and secure.
- Secure Battery: Use the vehicle's battery hold-down mechanism to secure the battery firmly in place to prevent movement and vibration damage.

Image: Top view of the Bosch FA103 battery, illustrating the positive and negative terminals for connection.
5. Operating Instructions
Once installed, the Bosch FA103 AGM battery operates like any standard motorcycle battery. Its AGM technology provides enhanced performance and reliability.
- Starting the Vehicle: Turn the ignition key and start your vehicle as usual. The battery's high cold-start current ensures reliable starting even in low temperatures.
- Electrical Load: The battery is designed to handle various electrical consumers. However, avoid excessive discharge by leaving lights or accessories on when the engine is off for extended periods.
- Short Trips: The battery is adapted for deep discharge and vibrations, making it efficient for short-distance trips with frequent starts and stops.
6. Maintenance
The Bosch FA103 AGM battery is a sealed, maintenance-free battery. This means you do not need to check or refill electrolyte levels.
- Cleaning Terminals: Periodically inspect battery terminals for corrosion. Clean them with a wire brush and a mixture of baking soda and water if necessary. Ensure terminals are dry before reconnecting.
- Charging: If the vehicle is stored for extended periods (e.g., during winter), it is recommended to use a suitable battery charger to maintain its charge. Use a charger compatible with AGM batteries.
- Storage: Store the battery in a cool, dry place if removed from the vehicle. Ensure it is fully charged before storage and periodically check its voltage.
- Physical Inspection: Regularly check the battery for any signs of damage, cracks, or leaks.
7. Troubleshooting
If you encounter issues with your battery, consider the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Engine cranks slowly or not at all | Low battery charge, loose/corroded terminals | Charge the battery. Clean and tighten terminals. |
| Lights dim when engine is off | Battery discharge due to accessories left on | Avoid leaving accessories on. Charge the battery if deeply discharged. |
| Battery not holding charge | Faulty charging system, internal battery damage, parasitic drain | Check vehicle's charging system (alternator/regulator). Consult a professional if issues persist. |
| Corrosion on terminals | Normal wear, improper connection | Clean terminals and apply anti-corrosion grease. Ensure tight connections. |
8. Specifications
| Specification | Value |
|---|---|
| Brand | Bosch |
| Model Number | 0986FA1030 |
| Vehicle Service Type | Motorcycle |
| Size (Capacity) | 9Ah - YB9-B |
| Voltage | 12 V |
| Battery Material | Lead Acid, AGM |
| Item Weight | 3.16 Kilograms |
| Product Dimensions (D x W x H) | 7.5 x 13.5 x 13.9 centimeters |
| Number of Cells | 6 |
| Terminal Type | Quad Terminal |
| Country of Origin | Taiwan |

Image: Technical drawing showing the dimensions of the Bosch FA103 battery (135mm length, 75mm width, 139mm height).
9. Product Video
Video: An overview of the Bosch FA103 AGM Motorcycle Battery, highlighting its key features such as leak-proof gel technology, proven Bosch quality, shake-resistant construction, minimal self-discharge, pre-filled and charged status, suitability for various vehicles (motorcycles, mopeds, ATVs, snowmobiles), and reliable starting power and durability. It also mentions finding the right battery for your vehicle in the product guides.
10. Warranty and Support
For warranty information, technical support, or any inquiries regarding your Bosch FA103 AGM Motorcycle Battery, please refer to the official Bosch website or contact Bosch customer service directly. Keep your purchase receipt as proof of purchase.
You can find additional product guides and documents on the Bosch official support pages.






