1. Introduction
This manual provides essential information for the safe and effective use of your Burflo XSBT620 XSBT600 replacement battery. Please read these instructions carefully before installation and operation to ensure optimal performance and longevity of your battery.
Video: Unboxing the Burflo XSBT620 Replacement Battery. This video demonstrates the contents of the product packaging, including the battery unit and the adapter plug.
2. Product Overview
The Burflo XSBT620 XSBT600 is a high-capacity lithium-ion replacement battery designed for various Shark cordless vacuum cleaners. It features quality cells and an intelligent control chip for enhanced performance and safety.
- Capacity: 3500mAh
- Voltage: 21.6V
- Battery Type: Lithium-ion
- Compatibility: Designed for Shark IZ162H, IZ163H, IZ361H, IZ362H, IZ363HT, QZ162HQBI, QZ162HQDE, QZ162HQLC, QZ162HQPB, QZ162HQSV, QZ163HQBI, QZ163HQDE, QZ163HQLC, QZ163HQPB, QZ163HQSV, IZ162CCO, IZ162HB, IZ162HNP Cordless Vacuums.

Image: The Burflo XSBT620 replacement battery shown alongside various compatible Shark cordless vacuum cleaner models, illustrating its wide compatibility.

Image: A detailed diagram highlighting key features of the Burflo XSBT620 battery, including the charging port, battery charging port, LED indicator, snap button, and anti-slip strips.
3. Safety Information
Your safety is paramount. This battery is equipped with an intelligent control chip and multiple protection features to ensure safe operation. Please adhere to the following safety guidelines:
- Do not disassemble, hit, crush, or throw the battery into fire.
- Do not place the battery in a hot environment.
- Do not use the battery if it has been immersed in water.
- Do not attempt to open the battery; the internal electronic circuits can be damaged.
- Built-in protections include over-charge, over-discharge, over-voltage, over-current, and over-heating protection.

Image: Visual representation of the multiple protection design of the Burflo battery, showing icons for overcharge, battery protection, high temperature protection, and overvoltage protection.
4. Installation Instructions
The Burflo XSBT620 XSBT600 replacement battery is designed for easy installation, fitting seamlessly into your compatible Shark cordless vacuum cleaner, similar to the original battery.
- Ensure your vacuum cleaner is powered off and unplugged from any charging source.
- Locate the battery compartment on your Shark vacuum cleaner.
- Remove the old battery by pressing any release buttons or latches as per your vacuum's specific design.
- Align the new Burflo replacement battery with the compartment and slide it into place until it clicks securely.
- Verify that the battery is firmly seated before attempting to use or charge the vacuum.

Image: A hand demonstrating the process of inserting the Burflo replacement battery into a Shark cordless vacuum cleaner, showing how it slides into the battery slot.
5. Charging Instructions
To maximize the lifespan and performance of your Burflo replacement battery, follow these charging guidelines:
- Always use your original Shark charger or a compatible charger. The battery includes an interface plug for compatibility with different versions of Shark chargers.
- After heavy usage, allow the battery to cool down for 15-30 minutes before connecting it to the charger. This helps ensure the durability of the battery cells.
- If the adapter does not immediately charge, gently twist the adapter to ensure a proper connection.
- The battery has no memory effect, allowing for flexible charging without reducing its capacity over time.

Image: The Burflo replacement battery connected to an original Shark charger via an interface plug, demonstrating how to use existing charging equipment.

Image: A graphic illustrating the importance of allowing the battery to cool down for 15-30 minutes after use before initiating the charging process.
6. Operating Guidelines
Once installed and charged, your Burflo replacement battery will power your Shark cordless vacuum cleaner, enabling extended cleaning sessions. The high capacity of 3500mAh ensures longer run times compared to standard batteries, allowing for uninterrupted cleaning of your home.

Image: A collage showing a Shark cordless vacuum cleaner being used in different household cleaning scenarios, highlighting its versatility and the extended cleaning capability provided by the battery.
7. Maintenance
Proper maintenance ensures the longevity of your battery:
- Charging Cycles: The battery is designed for over 500 charge cycles.
- Temperature: Store the battery in a cool, dry place away from extreme temperatures. The recommended operating temperature range for charging is 0°C to +40°C, and for discharging is -20°C to +60°C.
- Cleaning: Keep the battery contacts clean and free from dust or debris.
8. Troubleshooting
If you encounter issues with your Burflo replacement battery, consider the following:
- Battery Not Charging: Ensure the charger adapter is securely connected. If necessary, gently twist the adapter to establish a proper connection. Confirm the battery has cooled down sufficiently after heavy use before attempting to charge.
- Reduced Run Time: Over time, all batteries experience degradation. Ensure the battery is fully charged before each use. If run time significantly decreases, consider the battery's age and usage cycles.
- Vacuum Not Powering On: Verify the battery is correctly installed and fully charged. Check for any obstructions in the vacuum cleaner itself.
For persistent issues, please refer to the 'Warranty and Support' section for contact information.
9. Specifications
| Feature | Detail |
|---|---|
| Model Numbers | XSBT620, XSBT600 |
| Capacity | 3500mAh / 75.6Wh |
| Voltage | 21.6V |
| Battery Cell Composition | Lithium-ion |
| Maximum Charging Voltage | 21.6V |
| Discharging End Voltage | 16V |
| Weight | 505g ± 5g |
| Dimensions (LxWxH) | 172 x 120.5 x 49mm |
| Charging Temperature Range | 0°C to +40°C |
| Discharging Temperature Range | -20°C to +60°C |
| Manufacturer | Dongguan Hongbo New Energy Technology Co. , Ltd. |

Image: The Burflo XSBT620 battery displaying its key specifications including capacity, voltage, and physical dimensions.
10. Warranty and Support
Burflo is committed to providing quality products and excellent customer service. If you encounter any issues with your Burflo replacement battery, please do not hesitate to contact our customer support team. We are dedicated to assisting you and ensuring your satisfaction.
For support, please visit the Burflo store on Amazon or contact us through the platform where you purchased the product.