1. Introduction
Thank you for choosing the GEVEELIFE 20V Cordless Brushless Electric String Trimmer & Edger. This versatile 4-in-1 tool is designed for efficient lawn care, yard cleanup, and trimming tasks. It features a powerful brushless motor, a 15-inch cutting width, and comes with two 5.0Ah batteries for extended runtime. This manual provides essential information for safe assembly, operation, and maintenance of your new tool.
2. Important Safety Instructions
WARNING: Read all safety warnings and instructions before operating this product. Failure to follow the warnings and instructions may result in electric shock, fire, and/or serious injury.
- Always wear eye protection, long pants, and sturdy footwear when operating the trimmer.
- Keep children, bystanders, and pets at a safe distance (at least 50 feet/15 meters) from the operating area.
- Inspect the work area for objects such as rocks, broken glass, nails, wire, or string that can be thrown or become entangled in the cutting line or blades.
- Do not operate the tool in wet conditions or rain.
- Ensure the battery is fully charged before use and removed when not in use or during maintenance.
- Use only GEVEELIFE approved replacement parts and accessories.
- Never modify the tool or its accessories.
- Always hold the tool firmly with both hands during operation.
3. Package Contents
Carefully unpack all items and ensure you have received everything listed below. If any parts are missing or damaged, contact customer support.

Image: All components included in the GEVEELIFE Weed Wacker Kit, laid out on a rock in a garden setting.
- 1 * Cordless String Trimmer
- 2 * 5.0 Ah Battery
- 1 * Charger
- 6 * Cutting Spool (Dual-line)
- 1 * Saw Blade
- 2 * Metal Blade
- 1 * Hexagonal Wrench
- 1 * Gloves
- 1 * Glasses
- 1 * Waist Bag
4. Assembly and Setup
4.1 Attaching the Auxiliary Handle
- Loosen the knob on the auxiliary handle.
- Slide the handle onto the main shaft to a comfortable position.
- Tighten the knob securely.
4.2 Installing the Guard
- Align the guard with the mounting slots on the trimmer head.
- Push the guard firmly until it clicks into place. Ensure it is securely attached to prevent debris from being thrown towards the user.
4.3 Battery Installation and Charging
- To install the battery, slide it into the battery port on the tool until it locks into place.
- To remove, press the battery release button and slide the battery out.
- To charge, connect the charger to a power outlet and insert the battery into the charger. The indicator light will show charging status.

Image: Two 5.0Ah rechargeable batteries, highlighting their capacity and protective features.
4.4 Adjusting the Trimmer Head and Shaft
The trimmer features multiple adjustable designs for optimal comfort and performance:
- Shaft Length: Extend or retract the telescopic shaft to your desired length for comfortable operation.
- Head Angle: The trimmer head can be adjusted up to 90 degrees for various trimming and edging tasks. Press the adjustment button and pivot the head to the desired angle.
- Handle Angle: The auxiliary handle can be adjusted for 360-degree swivel and 180-degree vertical adjustment.

Image: The trimmer head shown adjusted to a 90-degree angle, demonstrating its flexibility for various tasks.

Image: Illustrations showing the 360-degree swivel, 180-degree vertical, and 90-degree adjustable angle features of the trimmer, along with different shaft lengths.
5. Operating Instructions
5.1 Starting and Stopping the Trimmer
- Ensure the battery is fully inserted.
- Press and hold the safety lock button.
- Squeeze the trigger switch to start the trimmer.
- Release the trigger switch to stop the trimmer.
5.2 Trimming with Cutting Spools (String)
Use the cutting spools for trimming soft grass and light weeds.

Image: The brushless motor in operation, illustrating its high speed of 20,000 RPM for efficient cutting.

Image: The smart auto line feed system, showing how the 1.2-inch line is automatically released and trimmed for continuous operation.
- Hold the trimmer at a slight angle to the ground.
- Move the trimmer slowly and steadily across the area to be cut.
- The automatic line feed system will release new line as needed.
5.3 Edging Function
To use as an edger, adjust the trimmer head to the vertical position (90 degrees).

Image: Comparison illustrating the 15-inch wider cutting width of the GEVEELIFE trimmer compared to a standard 6-inch trimmer, showing increased efficiency.
- Guide the trimmer along the edge of your lawn, driveway, or flower beds.
- Use the guide wheel (if present) for stability and a straight cut.
5.4 Using Metal Blades and Saw Blade (4-in-1 Versatility)
For thicker brush, small shrubs, or thin branches, replace the cutting spool with the appropriate blade.

Image: A collage demonstrating the 4-in-1 versatility, showing the trimmer used for lawn trimming, edge trimming, cutting small bushes with a metal blade, and cutting thin branches with a saw blade.
- Metal Blades: Ideal for cutting small shrubs and thick grass.
- Circular Saw Blade: Designed for cutting thin branches.
- Always ensure the tool is off and the battery is removed before changing blades.
- Follow the instructions for blade replacement carefully, using the provided hexagonal wrench.
6. Maintenance
Regular maintenance ensures optimal performance and extends the life of your tool.
6.1 Cleaning
- After each use, remove the battery and clean the trimmer head, guard, and motor housing with a damp cloth.
- Remove any grass, dirt, or debris from the air vents to prevent overheating.
- Do not use harsh chemicals or abrasive cleaners.
6.2 Blade and Line Replacement
- Cutting Spool: Replace the cutting spool when the line is depleted. Refer to the product packaging for compatible replacement spools.
- Metal/Saw Blades: Inspect blades regularly for damage or dullness. Replace worn or damaged blades immediately. Use only genuine GEVEELIFE replacement blades.
6.3 Battery Care and Storage
- Store batteries in a cool, dry place away from direct sunlight and extreme temperatures.
- Do not store batteries in a discharged state for extended periods. Charge them periodically if not in use.
- Store the trimmer in a dry, secure location, out of reach of children.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Trimmer does not start | Battery not inserted correctly or discharged. Safety lock not engaged. | Ensure battery is fully inserted and charged. Press safety lock button before squeezing trigger. |
| Cutting line not feeding | Line tangled or depleted. Debris in feed mechanism. | Remove battery, clear any debris. Replace cutting spool if line is depleted. |
| Poor cutting performance | Dull or damaged line/blade. Incorrect cutting technique. | Replace line or blade. Ensure proper cutting angle and speed. |
| Tool overheats | Blocked air vents. Prolonged heavy use. | Clear air vents. Allow tool to cool down before resuming use. |
8. Specifications
- Brand: GEVEELIFE
- Model Number: B0H1RLC52D
- Power Source: Battery Powered
- Battery Type: 20V, 5.0Ah Lithium-ion (2 included)
- Cutting Width: 15 Inches
- Speed: 20000 RPM
- Product Dimensions (L x W): 24.41" x 11.61"
- Cordless: Yes
- Included Blades: 6 Dual-line Spools, 2 Metal Blades, 1 Circular Saw Blade
9. Warranty and Support
GEVEELIFE products are manufactured to high-quality standards. For warranty information, please refer to the warranty card included with your purchase or visit the official GEVEELIFE website. If you encounter any issues or require technical assistance, please contact GEVEELIFE customer support through the retailer where the product was purchased or via the contact information provided on the official website.
Please have your model number (B0H1RLC52D) and purchase date available when contacting support.