1. Product Overview
This manual provides instructions for the FLYLINKTECH 4000mAh replacement battery designed for Dyson V7 SV11 series vacuum cleaners. It covers installation, operation, maintenance, and troubleshooting.
1.1 Compatible Models
- Dyson V7 Fluffy
- Dyson V7 Fluffy+
- Dyson V7 Absolute
- Dyson V7 Absolute Extra
- Dyson V7 Animalpro
- Dyson V7 Motorhead
- Dyson V7 Trigger
- Dyson V7 Car+Boat SV11
Note: This battery is not compatible with SV07 models, as SV07 is not a V7 series vacuum cleaner.
1.2 Package Contents
- V7 Replacement Battery x 1
- Pre-motor Filter x 1
- Post-motor Filter x 1
- Cleaning Brush x 1
- Screwdriver x 1
- User Manual (Japanese version included) x 1

Image: Contents of the product package.
1.3 Key Features
- High Capacity: 4000mAh for extended runtime.
- Multiple Protection Functions: Built-in safeguards against overcurrent, overcharge, overdischarge, overheating, short circuit, and overvoltage.
- PSE Registered: Ensures product safety and compliance.

Image: Battery protection features.
2. Installation Instructions
Follow these steps to replace the battery in your Dyson V7 series vacuum cleaner:
- Remove the dust bin from the vacuum cleaner by pulling up the top part to open it.
- Using the provided screwdriver, remove the two screws located on the bottom of the main vacuum unit.
- Remove the single screw from the handle section of the vacuum cleaner using the screwdriver.
- Carefully detach the old battery.
- Install the new FLYLINKTECH replacement battery by reversing the removal steps. Ensure all screws are securely fastened.

Image: Step-by-step battery replacement guide.
3. Operating Instructions
3.1 Initial Use and Charging
- Before first use, fully charge the new battery.
- After the battery is depleted during use, do not charge it immediately. Allow approximately 10-20 minutes for the battery to cool down before initiating charging, especially if used in Max mode.
3.2 Charging Indicator
- During charging: The blue indicator light will be on.
- When fully charged: The blue indicator light will turn off.
- Error indication: A yellow or red light indicates a temporary error. If this occurs, please contact support@flylinktech.hk.

Image: Charging precautions and indicator light guide.
4. Maintenance
4.1 Filter Cleaning
- Wash the filters with cold water at least once a month.
- Ensure the filters are completely dry before reattaching them to the vacuum cleaner.

Image: Filter and brush cleaning.
4.2 Battery Storage
- Store the product in a cool, dry environment.
- Keep away from heat sources, fire, flammable/explosive gases, and liquids to prevent leakage, heat generation, smoke, fire, or explosion.
- Avoid storing in direct sunlight during summer, in extremely low temperatures during winter, or in places with drastic day-night temperature differences.
- When storing the battery for an extended period, ensure it is fully charged. Recharge it before reuse.
- Avoid leaving the battery completely drained or in a low-charge state for prolonged periods. For long-term storage, it is recommended to remove the battery from the vacuum cleaner and store it with a partial charge (not full) in a cool, dry place, away from extreme temperatures.
- Prevent metal objects from entering the battery box during storage, as this can cause leakage, heat, smoke, fire, or explosion.
4.3 General Precautions
- Do not disassemble, modify, or subject the battery to impact.
- Avoid over-discharging the battery (leaving it at 0% charge).
5. Troubleshooting
5.1 Indicator Light Errors
- If the battery indicator light shows yellow or red, it indicates a temporary error.
- In such cases, please contact our support team at support@flylinktech.hk for assistance.
5.2 Reduced Operating Time
- If the vacuum cleaner's operating time significantly decreases, it may indicate battery degradation.
- Ensure you are following the proper charging and storage guidelines outlined in Section 3 and 4 to maximize battery lifespan.
6. Specifications
| Battery Type | Lithium-ion |
| Battery Capacity | 4000 mAh |
| Voltage | 21.6 V |
| Recommended Use | Vacuum Cleaner |
| Reusability | Rechargeable |
| Number of Units | 1 |
| Battery Weight | 500 g |
| Product Dimensions | 12.2 x 8.1 x 13.1 cm |
7. Warranty and Support
7.1 Manufacturer Warranty
This product comes with a reliable 12-month warranty period from the date of purchase.
7.2 Customer Support
- We offer 24-hour after-sales service support.
- A 30-day free return and exchange policy is available.
- For any inquiries or issues during use, please do not hesitate to contact us at support@flylinktech.hk.
- Contact information is also provided in the included user manual. If the manual is misplaced, contact details can often be found on the product's online page.





