1. Product Overview
The Andeman Cordless Pressure Washer is a portable, battery-powered cleaning device designed for various outdoor tasks. It offers powerful cleaning performance without the need for a direct water faucet connection, providing ultimate flexibility.

Figure 1: Andeman Cordless Pressure Washer and included accessories.
2. Package Contents
Verify that all items listed below are included in your package:

Figure 2: Detailed view of all components in the package.
- Cordless Pressure Washer Unit
- Charger
- Removable Foam Bottle
- Lithium Battery (2x 3.0Ah included)
- 6-in-1 Multi-function Nozzle
- User Manual
- Water Filter
- Bottle Connector
- Hose Adapter
- 5m/16.4ft Water Hose
3. Setup Instructions
3.1 Battery Installation
Ensure the battery is fully charged before first use. Slide the 21V Lithium-Ion battery into the base of the pressure washer handle until it clicks securely into place.
Video 1: Andeman Pressure Washer Installation Guide. This video demonstrates the battery installation process.
3.2 Nozzle Attachment
Connect the 6-in-1 multi-function nozzle to the front of the pressure washer unit. Push it in firmly and rotate clockwise until it locks into position.

Figure 3: Visual guide for attaching the battery and nozzle.
3.3 Hose Connection
Attach the hose adapter to the water inlet on the pressure washer. Then, connect the 5m water hose to the adapter and tighten it securely to prevent leaks.
3.4 Water Source Options
The Andeman Cordless Pressure Washer offers flexible water intake methods:
- Bucket Self-Priming: Place the weighted water filter end of the hose into a bucket of water.
- Bottle Self-Priming: Use the included bottle adapter to connect a standard soda bottle (e.g., 2-liter) directly to the pressure washer.
- Pool Self-Priming: Place the weighted water filter end of the hose directly into a pool or other large water body.

Figure 4: Three convenient ways to draw water for your pressure washer.
Note: This product lacks a flow-stop feature. Direct faucet connections are not recommended to avoid potential leaks.
4. Operating Instructions
4.1 Powering On/Off
With the battery installed and water source connected, press and hold the trigger to start the pressure washer. Release the trigger to stop. Ensure the safety lock is engaged when not in use.
4.2 Nozzle Selection
The 6-in-1 nozzle allows you to customize spray patterns for different cleaning tasks. Rotate the nozzle head to select from the following patterns:
- 0° (Direct Jet): For stubborn dirt, moss, and rusty spots.
- 15° (Narrow Fan): For brick, cement floors, and wood.
- 25° (Medium Fan): For glass, plastic surfaces, and ceramics.
- 40° (Wide Fan): For large-area spraying, watering plants, or rinsing.
- Jet: A powerful stream for tough grime.
- Shower: A gentle spray for delicate surfaces or watering.
Video 2: Guide on how to use the 6-in-1 nozzle for various cleaning tasks.
4.3 Using the Foam Cannon
For deep cleaning or car detailing, attach the removable foam bottle. Fill it with your preferred cleaning solution. The upgraded foam blaster creates 50% thicker foam for optimal soap application.

Figure 5: The 400ML adjustable pressure foam bottle for effective cleaning.
4.4 Cleaning Tips
- Always start with a wider spray pattern on delicate surfaces and adjust as needed.
- Hold the nozzle at an appropriate distance from the surface to avoid damage.
- For heavily soiled areas, pre-soak with foam or a wider spray before using a direct jet.
5. Maintenance
5.1 Battery Charging
The 3.0Ah Lithium-Ion batteries charge fully in approximately 3 hours. Use the provided charger to ensure optimal battery life.

Figure 6: Battery specifications and charging details.
5.2 Water Filter Cleaning
Regularly inspect and clean the water filter to prevent clogging and maintain consistent suction efficiency. The weighted filter design helps keep it submerged for better performance.

Figure 7: The multi-function water filter ensures better filtration of impurities.
5.3 Storage
After each use, ensure the pressure washer is drained of all water. Store the unit and all accessories in the rugged carry case in a dry, cool place.
6. Troubleshooting
- No Water Flow: Check if the water filter is clean and fully submerged. Ensure the hose is properly connected and not kinked.
- Low Pressure: Verify the battery is fully charged. Check the nozzle setting; a wider spray will have lower perceived pressure. Ensure the water source is adequate.
- Battery Not Charging: Ensure the charger is properly connected to both the battery and a power outlet.
- Product Note: All products undergo rigorous waterproof and battery testing prior to shipment. A small amount of residual moisture inside is normal and poses no safety risk.
7. Specifications
| Feature | Specification |
|---|---|
| Brand | Andeman |
| Power Source | Battery Powered |
| Max Pressure | 800 PSI |
| Maximum Flow Rate | 1.5 Gallons Per Minute (GPM) |
| Hose Length | 16.4 Feet (5m) |
| Battery Type | 21V Lithium Ion (2x 3.0Ah included) |
| Item Weight | 8.82 pounds |
| Product Dimensions | 16.54"L x 13.11"W x 5.04"H |
| Item Model Number | Andeman2 |
8. Warranty and Support
For any inquiries or support needs, please contact our customer service team. Refer to your purchase documentation for specific warranty details. Our team is available 24/7 to assist you.





