1. Introduction
Thank you for choosing the Lasica 4.0Ah 20V MAX LBXR20 Lithium-Ion Battery. This battery pack is designed to provide reliable power for your compatible Black and Decker 20V MAX outdoor power tools. This manual provides essential information for safe and efficient use, setup, operation, and maintenance of your new battery.

Image 1.1: Lasica 4.0Ah 20V MAX LBXR20 Lithium-Ion Battery.
2. Important Safety Instructions
Always follow basic safety precautions when using battery-powered tools to reduce the risk of fire, electric shock, and personal injury.
- Read all instructions: Before using the battery pack or tool, read all instructions and cautionary markings on the battery pack, charger, and tool.
- Charging: Use only the charger specified by the manufacturer. An incompatible charger may create a risk of fire.
- Avoid short circuits: Do not short-circuit the battery pack. Do not place the battery pack on a metal surface or near metal objects that could cause a short circuit.
- Do not incinerate: Do not dispose of the battery pack in a fire. It may explode.
- Do not open or disassemble: Do not attempt to open or disassemble the battery pack. There are no user-serviceable parts inside.
- Storage: Store the battery pack in a cool, dry place away from direct sunlight and excessive heat.
- Disposal: Dispose of used battery packs properly according to local regulations. Do not dispose of with household waste.
- Temperature: Do not charge the battery in temperatures below 10°C (50°F) or above 40°C (104°F).

Image 2.1: Lasica LBXR20 battery highlighting safety features like over-voltage, over-current, and over-temperature protection.
3. What's in the Box
Your Lasica 4.0Ah 20V MAX LBXR20 Lithium-Ion Battery package includes:
- 2 x Lasica 4000 mAh 20 Volt MAX Lithium Ion Battery (LBXR20)

Image 3.1: Two Lasica LBXR20 4.0Ah 20V MAX Lithium-Ion Batteries.
4. Setup
4.1 Initial Charging
Before first use, fully charge the battery pack. The battery is shipped with a low charge to prevent damage during transport.
- Insert the battery pack into a compatible Black and Decker 20V MAX Lithium-ion battery charger (e.g., LCS1620B, BDCAC202B).
- Plug the charger into a standard electrical outlet.
- The charger's indicator light will show the charging status. Refer to your charger's manual for specific light patterns.
- Once fully charged, remove the battery pack from the charger.
Video 4.1: This video demonstrates the process of charging a Lasica replacement battery for Black & Decker 20V Max tools using a compatible charger.
4.2 Installing the Battery into a Tool
To install the battery pack into a compatible tool:
- Align the battery pack with the battery port on the tool.
- Slide the battery pack into the tool until it clicks securely into place. Ensure it is fully seated to prevent accidental dislodgement during operation.

Image 4.2: The battery features a release button for easy installation and removal from tools.
5. Operating Instructions
The Lasica LBXR20 battery is designed for use with a wide range of Black and Decker 20V MAX cordless outdoor power tools. Always refer to your specific tool's instruction manual for detailed operating procedures.
5.1 Compatible Tools
This battery is compatible with Black and Decker 20V MAX cordless tools such as:
- Weed Eaters / String Trimmers (e.g., LST201, LST522, LST120, LST220)
- Drills (e.g., BD4KITCDCRL, LDX120C, LDX220C)
- Hedge Trimmers (e.g., LHT2220)
- Blowers (e.g., LSW20, LSW221)
- Other 20V MAX tools like BDCCS20B, LCC221, LCC222, LSTE523, LSTE525, BDCDMT120, CHH2220, LDX120SB, LSW321, LCS120, LCS1020, LGC120.

Image 5.1: The Lasica LBXR20 battery provides power for compatible Black and Decker drills.

Image 5.2: The Lasica LBXR20 battery in use with a hedge trimmer.

Image 5.3: The Lasica LBXR20 battery powering a leaf blower for outdoor tasks.
6. Maintenance
6.1 Charging Practices
- Always charge the battery in a well-ventilated area.
- Do not charge the battery in damp or wet conditions.
- Avoid leaving the battery on the charger for extended periods after it is fully charged.
6.2 Storage
- Store battery packs in a cool, dry place, ideally between 10°C (50°F) and 20°C (68°F).
- For long-term storage, charge the battery to approximately 50% capacity.
- Avoid storing batteries in direct sunlight or where temperatures can exceed 40°C (104°F), such as inside a vehicle in summer.
6.3 Cleaning
- Keep the battery terminals clean. Use a clean, dry cloth to wipe off any dust or debris.
- Do not use water or cleaning solvents on the battery pack.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Battery not charging | Charger not plugged in; faulty charger; battery too hot/cold; faulty battery. | Ensure charger is plugged in. Try a different outlet. Allow battery to reach room temperature. Test with another battery/charger if available. Replace faulty components. |
| Short runtime | Battery not fully charged; old/worn battery; heavy tool usage. | Ensure battery is fully charged before use. Consider replacing old batteries. For heavy-duty tasks, use higher capacity batteries or have spares ready. |
| Tool not operating with battery | Battery not properly installed; battery discharged; tool malfunction. | Re-insert battery to ensure it clicks into place. Charge the battery. Test the tool with a different, charged battery. If tool still fails, consult tool's manual. |
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | LBXR20 |
| Battery Type | Lithium Ion |
| Voltage | 20 Volts MAX |
| Capacity | 4000mAh (4.0Ah) |
| Wattage | 80Wh |
| Product Dimensions | 2.9 x 9.9 x 3.3 inches |
| Item Weight | 1.68 pounds |
| Safety Standards | Complies with FCC, RoHS, and CE security testing standards. |

Image 8.1: Visual comparison showing the extended runtime of a 4.0Ah battery versus a 1.5Ah battery.
9. Warranty & Support
For warranty information or technical support, please refer to the contact details provided with your purchase or visit the official Lasica website. Keep your purchase receipt as proof of purchase.