1. Introduction
Thank you for choosing the ONEVAN 1000 Nm Cordless Brushless Impact Wrench. This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your new tool. Please read this manual thoroughly before use and keep it for future reference.
This impact wrench is designed for tightening and loosening bolts and nuts in various applications, including automotive repair, construction, and heavy assembly tasks. Its brushless motor delivers high torque and efficiency.

Image 1.1: The ONEVAN 1/2 inch Impact Wrench, highlighting its 1000 Nm torque, 4000mAh battery capacity, 2200 RPM speed, and integrated LED light.
2. Safety Instructions
Always follow basic safety precautions to reduce the risk of fire, electric shock, and personal injury when using power tools.
- Work Area Safety: Keep your work area clean and well-lit. Cluttered or dark areas invite accidents. Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust.
- Electrical Safety: Avoid body contact with earthed or grounded surfaces (e.g., pipes, radiators, ranges, refrigerators). Do not expose power tools to rain or wet conditions.
- Personal Safety: Always wear eye protection. Use hearing protection when operating the tool for extended periods. Dress properly; avoid loose clothing or jewelry. Secure long hair.
- Tool Use and Care: Do not force the power tool. Use the correct power tool for your application. Disconnect the battery pack from the power tool before making any adjustments, changing accessories, or storing power tools.
- Battery Pack Use and Care: Recharge only with the charger specified by the manufacturer. Do not use battery packs with any other power tools. Do not open, crush, or expose battery packs to fire or high temperatures.
3. Package Contents
Upon unpacking, please verify that all items listed below are present and undamaged. If any items are missing or damaged, contact your retailer immediately.
- ONEVAN Cordless Brushless Impact Wrench (1 unit)
- Lithium-Ion Battery (2 units, 4.0 Ah)
- Battery Charger (1 unit)
- Socket Set (various sizes)
- User Manual (this document)

Image 3.1: The ONEVAN Impact Wrench kit, showing the tool, two batteries, charger, and a selection of sockets.
4. Product Overview
Familiarize yourself with the components of your ONEVAN impact wrench before operation.

Image 4.1: Side view of the ONEVAN Impact Wrench, illustrating the main body, battery, and square drive.
5. Setup
5.1 Battery Charging
- Connect the charger to a standard power outlet.
- Slide the battery pack onto the charger. Ensure it clicks into place.
- The charging indicator light on the charger will show the charging status. Refer to the charger's manual for specific light indications.
- Once fully charged, remove the battery from the charger.

Image 5.1: Two 20V 4.0Ah ONEVAN lithium-ion batteries, designed for extended work time.
5.2 Attaching and Removing the Battery
- Attaching: Align the battery pack with the base of the impact wrench and slide it in until it clicks securely into place.
- Removing: Press the battery release button (usually located on the side of the battery) and slide the battery pack out.
5.3 Installing and Removing Sockets
- Installing: Push the desired socket onto the square drive anvil until it locks securely. Ensure it is fully seated.
- Removing: Pull the socket firmly off the square drive anvil.

Image 5.2: The impact wrench shown with a selection of sockets, demonstrating compatibility.
6. Operation
6.1 Powering On/Off
The tool is powered on by pressing the trigger and powered off by releasing it.
6.2 Variable Speed Control
The impact wrench features continuous variable speed adjustment from 0 to 2,200 RPM. The speed increases proportionally with the pressure applied to the trigger. This allows for precise control over the fastening or loosening process.

Image 6.1: Close-up of the impact wrench's variable speed trigger, illustrating different RPM settings (0-1400, 0-1800, 0-2200).
6.3 Forward/Reverse Mode
The direction of rotation (clockwise for tightening, counter-clockwise for loosening) is selected using the side button located above the trigger. Push the button to the left for forward rotation and to the right for reverse rotation.

Image 6.2: Visual guide for selecting forward (tighten) and reverse (loosen) modes on the impact wrench.
6.4 Automatic Stop Function (Reverse Mode)
When operating in reverse mode, the tool features an automatic stop function. This function immediately stops the tool if it jams during loosening, preventing nuts from falling or being damaged. This enhances safety and efficiency.

Image 6.3: The automatic reverse stop feature, designed to prevent nuts from accidentally falling during loosening.
6.5 LED Work Light
The integrated LED light illuminates the work area, providing better visibility in dimly lit conditions. It activates automatically when the trigger is pressed.

Image 6.4: The built-in LED light on the impact wrench, providing illumination for dark work areas.
6.6 Applications
The ONEVAN impact wrench is suitable for a variety of tasks:
- Automotive repair, such as tire changes and engine work.
- Metal installation and fabrication.
- Assembly of heavy structures and scaffolding.
- General construction projects requiring high torque fastening.

Image 6.5: Various applications of the impact wrench, including automotive repair, metal installation, scaffolding assembly, and tire removal.
7. Maintenance
7.1 Cleaning
- Keep the tool's ventilation openings clean to prevent overheating.
- Wipe the tool with a dry cloth. Do not use water or chemical cleaners.
7.2 Storage
- Store the tool and batteries in a cool, dry place, away from direct sunlight and moisture.
- Keep out of reach of children.
7.3 Battery Care
- Charge batteries fully before storage and recharge every 3-6 months if not in use to maintain battery health.
- Do not store batteries in extreme temperatures.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Tool does not start | Battery not charged or improperly inserted. | Charge battery fully. Ensure battery is securely inserted. |
| Reduced power/torque | Low battery charge. | Recharge the battery. |
| Overheating | Blocked ventilation openings. Continuous heavy use. | Clean ventilation openings. Allow tool to cool down. |
| Socket not holding | Socket not fully seated on anvil. Worn anvil or socket. | Push socket firmly until it locks. Replace worn parts. |
9. Specifications
| Feature | Specification |
|---|---|
| Brand | ONEVAN |
| Model Number | sku004024_5 |
| Voltage | 20 Volts |
| Max Torque | 1000 Newton Meters |
| No-Load Speed | 0-2200 RPM |
| Head Style | Square Drive |
| Motor Type | Brushless |
| Battery Type | Lithium-Ion |
| Battery Capacity | 4.0 Ah (each) |
| Item Weight | 2.2 Kilograms |
| Material | Steel Alloy, Chrome Vanadium Steel |
| Included Components | Impact Wrench, 2 Batteries, Charger, Sockets |

Image 9.1: Comparison highlighting the advantages of a brushless motor over a brushed motor, including increased durability, speed, efficiency, and reduced noise.
10. Warranty and Support
ONEVAN products are manufactured to high-quality standards. For warranty information, please refer to the documentation included with your purchase or contact your retailer. For technical support or service inquiries, please contact ONEVAN customer service through the official website or your point of purchase.