1. Important Safety Information
WARNING: Always wear eye protection and gloves when using this string trimmer. Keep children and pets away from the operating area. Do not trim near flammable materials. Inspect the trimmer before each use for any damage or wear.
- Read and understand the entire instruction manual before operating the tool.
- Ensure the battery is fully charged before first use.
- Do not operate the trimmer in wet conditions or rain.
- Keep hands and feet away from the cutting line at all times.
- Store the tool in a dry, secure location out of reach of children.
2. Product Overview
The Litheli U20 Handy+ 20V Cordless String Trimmer is designed for efficient and effortless lawn maintenance. Its lightweight design and advanced features make trimming and edging tasks simpler.
Key Features:
- Lightweight Design: Weighs just 3.1 lbs for effortless handling and maneuverability.
- 10" Cutting Diameter: Allows for efficient trimming of larger lawns in a single pass.
- High Speed Operation: Operates at a speedy 7500 rpm for swift and effective lawn maintenance.
- Automatic Line Feed: For hassle-free trimming, saving you time and effort.
- Anti-Tangling Technology: Prevents snags and interruptions during operation.
- 2-in-1 Trimmer & Edger: Features a 180° rotatable head for versatile use.

Image: The Litheli U20 Handy+ 10-Inch Cordless String Trimmer, showcasing its ergonomic design and cutting head.
3. Setup & Assembly
3.1 Unboxing and Package Contents
Carefully open the packaging and remove all components. Ensure all items listed below are present:
- Litheli U20 Handy+ 20V String Trimmer Main Unit
- Auxiliary Handle
- Safety Guard
- 2.0Ah Lithium-Ion Battery
- Battery Charger
- Instruction Manual
- Assembly Tools (Hexagon socket spanner, screws)
Video: An unboxing and assembly guide for a Litheli U20 Handy+ Cordless String Trimmer. This video demonstrates the components and initial setup steps. Note: The video title mentions a 12-inch trimmer, but the assembly process is generally applicable to the 10-inch model.
3.2 Assembling the String Trimmer
- Connect the Main Shaft: Align the folding middle shaft and secure it with the provided screws using the hexagon socket spanner. Ensure the two parts of the middle shaft are aligned parallel for proper fit.
- Install the Safety Guard: Place the string trimmer flat. Install the safety guard on the trimmer head as shown in the manual using the two Phillips screws.
- Assemble the Auxiliary Handle: Clip the auxiliary handle at the appropriate position on the upper part of the shaft. The position can be adjusted according to personal comfort. Insert the bolt through the screw hole as shown, install and tighten the hand screw nut to secure it.

Image: Visual guide illustrating the assembly steps for the Litheli U20 Handy+ String Trimmer, including attaching the handle and guard.
3.3 Battery Installation and Charging
The Litheli U20 Handy+ String Trimmer uses a 20V 2.0Ah Lithium-Ion battery. Ensure the battery is fully charged before use.
- Charging: Connect the battery to the provided charger and plug it into a standard power outlet. The indicator lights on the battery will show the charging status.
- Installation: Slide the fully charged battery into the battery compartment on the trimmer until it clicks securely into place.
- Removal: Press the battery release button and slide the battery out of the compartment.

Image: The U20 IPS Super Battery SE, highlighting its compatibility with U20 series tools and Type-C input/output for charging.
4. Operating Instructions
4.1 Starting and Stopping
- To Start: Ensure the battery is installed. Press and hold the safety lock button, then squeeze the trigger switch.
- To Stop: Release the trigger switch.
4.2 Trimming and Edging
The 180° rotatable head allows for easy switching between trimming and edging modes.
- Trimming: Hold the trimmer with the cutting head parallel to the ground. Move it in a sweeping motion across the area to be trimmed.
- Edging: Rotate the trimmer head 180° so the cutting line is perpendicular to the ground. Use the guide wheel (if present) to maintain a consistent edge along sidewalks and driveways.

Image: The Litheli U20 Handy+ demonstrating its 2-in-1 Trimmer & Edger functionality with a 180° rotatable head.
4.3 Automatic Line Feed
The automatic line feed system ensures continuous cutting without manual adjustment. If the line becomes too short, lightly tap the trimmer head on the ground while the motor is running to advance more line.

Image: Close-up of the automatic line feed mechanism on the Litheli U20 Handy+ String Trimmer.
5. Maintenance
5.1 Cleaning
- Always remove the battery before cleaning.
- Use a dry cloth to wipe down the exterior of the trimmer.
- Remove any grass clippings or debris from the cutting head and safety guard.
- Do not use water or abrasive cleaners.
5.2 Line Replacement
When the cutting line needs to be replaced, refer to the detailed instructions in the full manual or watch the relevant video for guidance. Ensure to use the correct diameter and type of replacement line.
5.3 Storage
- Remove the battery from the trimmer before storing.
- Store the trimmer in a cool, dry place, away from direct sunlight and moisture.
- Keep out of reach of children and pets.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Trimmer does not start | Battery not charged or improperly installed. | Ensure battery is fully charged and securely inserted. |
| Cutting line does not advance | Line tangled or spool empty. | Check for tangles, replace spool if empty. Lightly tap head on ground while running. |
| Reduced cutting performance | Dull or worn cutting line. | Replace the cutting line. |
7. Specifications
- Brand: LiTHELi
- Model Number: U20GT01-0A110
- Power Source: Battery Powered (1 Lithium Ion battery included)
- Battery: 20V 2.0Ah Lithium Ion
- Cutting Width: 10 inches (9.84 inches)
- Speed: 7500 RPM
- Item Weight: 4.89 Pounds (2.22 kg)
- Product Dimensions: 92.4L x 29.3W Centimetres
- Assembly Required: Yes
- Color: White
- Manufacturer: Litheli
- Country of Origin: China
8. Warranty & Support
For warranty information, please refer to the documentation included with your product or visit the official LiTHELi website. For technical support, parts, or service inquiries, please contact Litheli customer service at service@litheli.com.





