1. Important Safety Information
▲ WARNING! To reduce the risk of injury, only use ONEVAN battery packs. Other types of battery packs may burst, causing personal injury and damage.
▲ WARNING! Packaging materials are not toys! Children must not play with plastic bags! Danger of suffocation!
Symbols Used in this Manual:
- ! Warning: Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
- Read operator's manual: Always read and understand the instruction manual before operating the tool.
- Remove battery from the socket: Always remove the battery pack before carrying out any adjustment, servicing, or maintenance.
- Do not burn: Do not dispose of the battery pack in fire.
- Waste electrical products: Do not dispose of waste electrical products with household waste. Recycle where facilities exist. Check with local authorities or retailers for recycling advice.
- Li-Ion Battery: This product has been marked with a symbol relating to 'separate collection' for all battery packs. It will be recycled or dismantled to reduce environmental impact. Battery packs can be hazardous due to hazardous substances.
- Double insulation: Indicates that the tool has double insulation for added safety.
2. Product Overview
Parts Description (Fig. A)

Figure A: Main components of the ONEVAN Brushless Electric Impact Wrench.
| No. | Part | No. | Part |
|---|---|---|---|
| 1 | Anvil | 2 | LED light |
| 3 | Variable speed on/off trigger switch | 4 | Speed control |
| 5 | Battery pack | 6 | Handle |
| 7 | Forward/reverse selector | 8 |
3. Setup
3.1 Battery Installation and Removal
▲ WARNING! Before inserting or removing the battery pack, make sure the appliance is switched off to prevent injury and damage.
- To insert the battery pack: Align it with the impact wrench base and slide it in until the battery pack is locked in position.
- To remove the battery pack: Press the release button on the battery pack and pull the battery pack out at the same time.
3.2 Attaching Accessories
The ONEVAN Impact Wrench features a 1/2" square drive for various accessories.

Attaching a standard 1/2" socket to the impact wrench.

Installation of a 10mm chuck adapter for drilling applications. This chuck is only suitable for 1/2 thread machine use.
- For sockets: Align the square hole of the socket with the 1/2" square drive on the wrench and push firmly until it clicks into place.
- For chucks (e.g., 10mm chuck): Attach the chuck adapter to the 1/2" square drive, then secure the 10mm chuck onto the adapter. Ensure all components are tightly fastened before use.
4. Operation
4.1 Power On/Off
▲ WARNING! Do not stare directly at the light beam of the LED work light.
- To turn on: Press the trigger switch (3 of Fig. A). Increasing pressure on the trigger switch will increase the speed of the impact wrench.
- To turn off: Release the trigger switch.
4.2 Speed Control and Direction
The ONEVAN Impact Wrench offers variable speed control and a forward/reverse selector.

Stepless speed regulation via the trigger and the Forward/Reverse button.

The 4-speed control board and integrated LED work light for improved visibility.
- Selecting Forward Rotation: Push the forward/reverse selector (7 of Fig. A) to the left.
- Selecting Reverse Rotation: Push the forward/reverse selector (7 of Fig. A) to the right.
- Locking the Trigger: The variable speed switch will be locked if the forward/reverse selector (7 of Fig. A) is in the center position.
- Changing Speed Settings: Press the speed control button (4 of Fig. A) to cycle through high/low speed settings. The 'H' light indicates high rotation speed, and the 'L' light indicates low rotation speed. The tool also features 4 gear positions for both forward and reverse operation.
- Rapid Stop Function (Reverse Auto-Stop): When in reverse, press the function button (4 of Fig. A) to activate the rapid stop function. If the indicator (A of Fig. 3 in the manual) is on, the rapid stop function is selected. This feature stops the impact wrench immediately when it stalls while unscrewing a screw or nut, saving battery power.
4.3 Usage Demonstration
Video demonstrating the ONEVAN Brushless Electric Impact Wrench in various applications, including car wheel removal and engine bay work.
5. Specifications
| Feature | Specification |
|---|---|
| Brand Name | ONEVAN |
| Model Number | ONEVAN |
| Type | Rechargeable Electric Wrench |
| Motor Type | Brushless |
| Power Source | Battery (Electricity) |
| Rated Voltage | 18V (Output: 18V-21V) |
| Max. Torque | 1200N.m |
| Maximum Output Power | 1200W |
| No-Load Speed | 0-6700 rpm |
| Impact Frequency | 0-7200 ipm |
| Square Drive | 1/2 inch (12.7mm) |
| Gear Positions | Forward 4 Gears, Reverse 4 Gears (including reverse auto-stop function) |
| Tightening Capacity (Standard Bolt) | M10-M20 (3/8"-3/4") |
| Tightening Capacity (High Strength Bolt) | M10-M16 (3/8-5/8") |
| Battery Included | Yes (depending on set) |
| Battery Capacity | 4.0Ah/piece (21V Li-ion, 10-cell or 15-cell options) |
| Weight | 3.1kg (tool only, without battery) |
| Certification | CE |
| Origin | Mainland China |
Package Dimensions:
- Length: 39 cm
- Width: 27 cm
- Height: 6 cm
- Weight: 4.2 kg
Battery Compatibility:
Adapted to 18V B series lithium batteries, such as BL1850B (197285-8), BL1840B (197270-1), BL1830B (197602-2), BL1430B (197618-7), BL1820B (197487-6).
Also compatible with BL1850, BL1840, BL1440 (196391-6), BL1415 (194560-3), BL1815N (196781-3).
NOT compatible for DC18WA BL1813G BL1413G batteries.
NOT compatible for G Series batteries such as BL1813G (196663-9), BL1413G (196882-7), BL1415G, BL1430G, BL1815G.
NOT compatible for 18v Ni-CD batteries such as 1822 (194465-7).
6. Maintenance
- Cleaning: Regularly clean the tool's housing with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners.
- Ventilation: Keep the ventilation openings clear of dust and debris to prevent overheating. Use compressed air to blow out any accumulated dust.
- Battery Care: Store batteries in a cool, dry place away from direct sunlight. Do not expose batteries to extreme temperatures. Charge batteries fully before storage and periodically during long storage periods to maintain their lifespan.
- Lubrication: This tool is designed for maintenance-free operation. Do not attempt to lubricate internal components.
- Inspection: Periodically inspect the tool for any signs of damage, loose screws, or worn parts. If any issues are found, have the tool serviced by an authorized service center.
7. Troubleshooting
If you encounter problems with your ONEVAN Impact Wrench, refer to the table below for possible causes and solutions.
| Problem | Possible Causes | Possible Solutions |
|---|---|---|
| Cannot start | Battery pack not installed properly | Remove and insert the battery pack again |
| Battery not charged | Charge the battery | |
| Internal damage or wear, e.g., motor is damaged | Repair by an authorized service center | |
| Can only run slowly | Battery is not charged | Charge the battery |
| Battery wears out | Replace the battery with a new one | |
| Noisy or rattling | Internal damage or wear | Repair by an authorized service center |
| Overheat | Ventilation vents blocked | Clean the dust from the ventilation vents |
| The impact wrench is running for too long | Turn off the impact wrench and let it cool down |
8. User Tips
- Car Wheel Loosening: This impact wrench is suitable for loosening car wheels due to its high torque (1200N.M).
- Battery Voltage: The tool operates with 18V-21V lithium-ion batteries. The 'Vf' unit mentioned in some contexts refers to the voltage of the battery.
- Accessory Cases: If you need a separate plastic case for your impact wrench or other accessories, please contact the seller directly for availability.
- Battery Options: Be aware that different product sets are available, some including batteries and chargers, and others sold without. Choose the set that best fits your needs.
9. Warranty and Support
For detailed warranty information and after-sales service, please refer to the official user manual PDF available at: ONEVAN User Manual (PDF).
If you have any questions or require support, please contact the seller through your purchase platform. Your satisfaction is very important to us.