1. Important Safety Instructions
Please read and understand 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.
- Personal Safety: Always wear appropriate personal protective equipment, such as safety glasses, when operating the pressure washer. Do not direct the water jet at people, animals, or electrical equipment.
- Electrical Safety: Use only the provided charger for the batteries. Do not expose the battery pack or charger to water or rain. Do not operate the pressure washer in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust.
- Product Use and Care: Do not modify the pressure washer or its accessories. Ensure all connections are secure before operation. Keep the area clean and well-lit. Store the pressure washer indoors in a dry, secure place when not in use.
- Battery Safety: Do not short-circuit a battery pack. Do not charge damaged batteries. Dispose of batteries properly according to local regulations.
2. Product Overview
The ONEVAN Cordless Pressure Washer (Model sku005399) is a portable, battery-powered cleaning tool designed for various applications, including car washing, patio cleaning, and garden maintenance. It features a brushless motor for extended lifespan and efficient operation.

Figure 2.1: Complete package contents of the ONEVAN Cordless Pressure Washer, including the main unit, batteries, charger, hose, and various nozzles.
Key Features:
- 6-in-1 Nozzle: Offers versatile spray patterns (0°, 15°, 25°, 40°, foam, and shower modes) for different cleaning tasks.
- 180° Rotatable Nozzle: An additional nozzle for reaching difficult angles and tight spaces.
- 3-Speed Control: Adjustable water flow intensity for various cleaning requirements, from delicate surfaces to stubborn dirt.
- Brushless Motor: Provides enhanced durability, quiet operation, and high efficiency compared to traditional motors.
- Cordless Design: Powered by two 3.0 Ah lithium-ion batteries for portability and freedom from power outlets.
- Versatile Water Intake: Can draw water from various sources like buckets, pools, or rivers using the included 5-meter hose and filter.
Package Contents:
- 1 x Water Gun with 6-in-1 Nozzle
- 1 x 180° Rotatable Nozzle
- 1 x 5-meter Hose
- 1 x Extension Pole
- 1 x Foam Bottle
- 1 x Water Bottle Connector
- 1 x Cleaning Brush
- 1 x Filter
- 1 x Quick Charger
- 1 x Carrying Bag
- 2 x 3.0 Ah Battery
3. Setup Instructions
Follow these steps to prepare your pressure washer for use.
- Charge Batteries: Insert the 3.0 Ah batteries into the UL certified fast charger. Ensure the batteries are fully charged before first use. Charging typically takes 3-4 hours.
- Install Batteries: Slide the charged batteries securely into the battery slots on the pressure washer handle until they click into place.
- Connect Water Hose: Attach one end of the 5-meter hose to the water inlet on the pressure washer. Ensure a tight connection to prevent leaks.
- Attach Filter: Submerge the other end of the hose, equipped with the filter, into your chosen water source (e.g., bucket, pool, river). The filter prevents debris from entering the pump.
- Attach Nozzle: Select either the 6-in-1 nozzle or the 180° rotatable nozzle and securely attach it to the extension pole. Then, attach the extension pole to the pressure washer gun.

Figure 3.1: Proper connection of the water hose to the pressure washer unit.

Figure 3.2: The water intake filter allows drawing water from various sources like buckets, pools, or rivers.

Figure 3.3: The 6-in-1 nozzle offers multiple spray patterns for diverse cleaning needs.

Figure 3.4: The 180° rotatable nozzle provides flexibility for cleaning awkward angles.
4. Operating Instructions
Learn how to effectively use your ONEVAN Cordless Pressure Washer.
4.1 Powering On and Off
- To turn on the pressure washer, press and hold the power button located on the handle.
- To turn off the pressure washer, release the power button.
4.2 Adjusting Spray Modes (6-in-1 Nozzle)
The 6-in-1 nozzle allows you to quickly switch between different spray patterns by rotating the nozzle head.

Figure 4.1: The 6-in-1 nozzle offers various spray patterns for different cleaning needs.
- 0° Jet: For concentrated, high-impact cleaning on tough spots.
- 15° Fan: A narrow fan spray for intensive cleaning of smaller areas.
- 25° Fan: A medium fan spray for general cleaning tasks.
- 40° Fan: A wide fan spray for gentle cleaning and rinsing larger surfaces.
- Foam Mode: For applying detergent or soap using the foam bottle.
- Shower Mode: A gentle, wide spray for rinsing or watering plants.
4.3 Using the 180° Rotatable Nozzle
Attach the 180° rotatable nozzle to clean hard-to-reach areas such as car undercarriages or roof sections. Simply adjust the angle as needed during operation.

Figure 4.2: The 180° rotatable nozzle provides flexibility for cleaning awkward angles, such as car wheels.
4.4 Adjusting Speed Settings
The pressure washer has 3 adjustable speed settings to control water flow and cleaning intensity.
- Speed 1 (Low): Suitable for delicate surfaces like household glass.
- Speed 2 (Medium): Ideal for cleaning larger surfaces such as floors and fences.
- Speed 3 (High): For effectively removing stubborn dirt from hard-to-reach areas and heavily soiled surfaces.
4.5 Using the Foam Bottle
Attach the foam bottle to the pressure washer for applying cleaning detergents. Fill the bottle with your desired cleaning solution, then select the foam mode on the 6-in-1 nozzle.

Figure 4.3: The foam bottle allows for easy application of cleaning solutions.
5. Maintenance
Regular maintenance ensures optimal performance and extends the lifespan of your pressure washer.
- Clean Water Filter: Regularly inspect and clean the water intake filter to prevent clogging and ensure consistent water flow. Remove any debris or sediment.
- Battery Care: Store batteries in a cool, dry place away from direct sunlight. Do not store fully discharged batteries for extended periods. Charge them periodically if not in use.
- Unit Cleaning: After each use, rinse the pressure washer and accessories with clean water to remove any chemical residues or dirt. Wipe the exterior with a damp cloth.
- Storage: Store the pressure washer and its components in the provided carrying bag in a dry, frost-free environment.

Figure 5.1: The water intake filter should be regularly cleaned to maintain performance.
6. Troubleshooting
Refer to this section for common issues and their solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Pressure washer does not start | Battery not charged or improperly installed. | Ensure batteries are fully charged and correctly inserted. |
| Low or no water pressure | Clogged water intake filter or hose. Insufficient water supply. | Clean the water filter. Check hose for kinks or blockages. Ensure water source is adequate. |
| Water leaks from connections | Loose connections or damaged O-rings. | Tighten all hose and nozzle connections. Inspect O-rings for wear and replace if necessary. |
| Unit stops during operation | Battery is depleted. Overheating. | Recharge batteries. Allow the unit to cool down if it feels hot. |
7. Specifications
Technical details for the ONEVAN Cordless Pressure Washer Model sku005399.
| Specification | Detail |
|---|---|
| Brand | ONEVAN |
| Model Number | sku005399 |
| Product Dimensions | 54 x 10 x 36 cm; 3.36 kg |
| Power Source | Battery Powered |
| Batteries | 2 Lithium-ion (3.0 Ah each) |
| Maximum Pressure | Up to 120 Bar (1200 PSI) |
| Maximum Flow Rate | 6.5 Liters per minute |
| Hose Length | 5 Meters |
| Color | Blue |
| Specification Met | UL Certified Charger |
8. Warranty and Support
For warranty information, please refer to the product packaging or the official ONEVAN website. For technical support or service inquiries, please contact ONEVAN customer service through their official channels.