DayPlus 21V Cordless Pressure Washer

Contents

DayPlus 21V Cordless Pressure Washer User Manual

Model: 21V Cordless Pressure Washer

1. Introduction

The DayPlus 21V Cordless Pressure Washer is a versatile and portable electric cleaner designed for a wide range of cleaning and irrigation tasks. Powered by a high-capacity 21V lithium-ion battery, this device offers the freedom of cordless operation, allowing you to clean anywhere without being tethered to a power outlet. Its adjustable nozzle and multiple spray modes make it suitable for everything from removing tough stains on vehicles and driveways to gentle watering of plants and bathing pets. The compact and lightweight design ensures ease of use and portability for both indoor and outdoor applications.

2. Safety Information

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.

  • Always wear appropriate personal protective equipment, including eye protection, when operating the pressure washer.
  • Do not direct the water spray at people, pets, electrical devices, or the unit itself. High-pressure spray can cause injury.
  • Ensure the battery is fully charged before use and stored in a dry, cool place. Do not expose the battery to water or extreme temperatures.
  • Keep children and bystanders away from the operating area.
  • Never operate the pressure washer without a water source connected. Running dry can damage the pump.
  • Use only clean water. Do not use corrosive liquids or solvents that could damage the unit or cause harm.
  • Inspect the unit, hose, and accessories for any damage before each use. Do not operate if damaged.

3. Package Contents

Carefully unpack all items and ensure you have received the following components:

  • Cordless Pressure Washer Unit
  • 21V Lithium Battery (1 or 2, depending on purchase)
  • Power Adapter/Charger
  • Multi-Adjustable Nozzle (0-180 degrees)
  • 0° Specific Nozzle
  • Foam Pot (300ml capacity)
  • Water Filter
  • Water Hose (5 meters / 16.4 feet)
  • Quick Connectors for fuselage/water pipes and body/water bottle
  • Storage Bag
Diagram showing all components included with the pressure washer: storage bags, connectors, power adapter, 16.4ft hose, foam pot, multi-adjustable nozzle, water filter, 0° nozzle, and lithium battery.

Figure 1: Included Components

4. Assembly and Setup

Follow these steps to assemble your DayPlus Cordless Pressure Washer:

  1. Attach the Gun Barrel: Align the barrel of the cleaning gun with the inner slot of the water outlet on the main unit. Rotate it to fit securely in place.
  2. Connect the Water Hose: Attach the quick connector to the water input port on the pressure washer. Insert the water hose into the quick connector and retract it to secure the connection. Ensure the water filter is attached to the other end of the hose for drawing water.
  3. Insert the Battery: Align the 21V lithium battery with the battery slot on the bottom of the pressure washer handle and slide it in until it clicks. To remove, press the release button on the battery.
  4. Choose a Water Source: The pressure washer can draw water from various sources using its 5-meter (16.4ft) hose and filter basket. Common sources include buckets, bottles (using the appropriate connector), or natural bodies of water like rivers or pools. Ensure the filter basket is submerged and free from obstructions.
  5. Attach Nozzle/Foam Pot: Select your desired nozzle (multi-adjustable or 0°) or the foam pot and attach it to the end of the gun barrel.
Step-by-step assembly instructions for the pressure washer: connecting the gun barrel, quick connector, and battery.

Figure 2: Assembly Steps

5. Operating Instructions

5.1 Powering On/Off

Once the battery is inserted and the water source is connected, simply press and hold the trigger to start the water flow. Release the trigger to stop.

5.2 Water Absorption Methods

The pressure washer supports three primary water absorption methods:

  • Bucket: Place the filter end of the hose into a bucket of water.
  • Bottle: Connect a compatible bottle (e.g., cola bottle) to the unit using the provided connector.
  • River/Pool: Submerge the filter end of the hose into a natural water source.
Cordless pressure washer demonstrating three water absorption methods (bucket, bottle, pool) and showing the 21V 1.5Ah battery.

Figure 3: Water Absorption Options

5.3 Adjusting Spray Modes

The pressure washer features multiple spray modes to suit different cleaning needs:

  • Multi-Adjustable Nozzle: Rotate the nozzle head to change the spray pattern from 0 degrees (a concentrated stream) to 180 degrees (a wide fan spray). This allows for precise control over the irrigation or cleaning range.
  • 0° Specific Nozzle: Provides a powerful, concentrated stream for stubborn dirt and grime.
  • Foam Mode: Attach the foam pot filled with appropriate detergent to create a rich foam for deep cleaning.
Cordless pressure washer demonstrating multiple spray modes: foam, 0-degree nozzle, and 0-180 degree adjustable spray.

Figure 4: Multiple Spray Modes

Woman using the pressure washer for water-saving irrigation, showing the rotating nozzle for adjusting spray range.

Figure 5: Adjusting Spray for Irrigation

5.4 Using the Foam Pot

Fill the 300ml foam pot with your preferred car wash soap or cleaning detergent. Attach it to the gun barrel. The foam mode will mix the detergent with water to create a thick foam, ideal for pre-soaking dirty surfaces like cars or bikes.

6. Maintenance

Regular maintenance ensures the longevity and optimal performance of your pressure washer.

  • Clean the Water Filter: The filter basket on the hose effectively filters impurities. Regularly inspect and clean the filter to prevent clogging and ensure consistent water flow. Remove any accumulated debris, particles, waste leaves, or sludge.
  • Rinse After Use: After using detergents or cleaning solutions, run clean water through the pressure washer for a few minutes to flush out any chemical residues.
  • Battery Care: Charge the 21V lithium-ion battery using the provided power adapter. Do not overcharge. Store the battery in a cool, dry place away from direct sunlight and extreme temperatures. If storing for extended periods, charge the battery to about 50% capacity.
  • Nozzle Cleaning: If the nozzle becomes clogged, remove it and clear any obstructions using a small pin or needle.
  • Storage: Disconnect all components and drain any remaining water from the unit and hose. Store the pressure washer and its accessories in the provided storage bag in a dry, protected area.

7. Troubleshooting

If you encounter issues with your DayPlus Cordless Pressure Washer, refer to the following common problems and solutions:

ProblemPossible CauseSolution
No water flow or weak pressure
  • Low battery
  • Clogged water filter
  • Air in the pump
  • Insufficient water source
  • Clogged nozzle
  • Charge the battery
  • Clean the water filter
  • Run the unit without the nozzle until water flows steadily to purge air
  • Ensure water source is adequate and hose is not kinked
  • Clean the nozzle
Unit does not turn on
  • Battery not inserted correctly
  • Battery is dead
  • Faulty battery or unit
  • Re-insert battery firmly
  • Charge the battery
  • Contact customer support
Water leaks from connections
  • Loose connections
  • Damaged O-rings or seals
  • Tighten all connections
  • Inspect and replace O-rings/seals if damaged

8. Specifications

FeatureSpecification
Voltage21V
Battery Capacity1.5Ah Lithium-ion
Water Hose Length5 meters (16.4 feet)
Foam Pot Capacity300ml
Product Weight1.25 KG
Body MaterialEngineering Plastic
Interface MaterialEngineering Plastic
Nozzle MaterialEngineering Plastic
Water Spray TypeSpray (Adjustable 0-180°)
Handle TypeFinger Type
Battery IncludedYes
With Water PipesYes
Package Length35 cm
Package Width27 cm
Package Height12 cm
Package Weight5.0 kg

9. User Tips

  • For optimal performance, ensure the battery is fully charged before starting any cleaning task. The 1.5Ah lithium-ion battery is designed for extended working hours.
  • Take advantage of the multi-adjustable nozzle. A narrow spray is great for tough spots, while a wider fan spray is perfect for rinsing larger areas or gentle watering.
  • The lightweight design (1.25 KG) and one-handed operation make this pressure washer very user-friendly, even for extended periods or for users who may find heavier equipment challenging.
  • Always use the water filter when drawing water from non-tap sources like buckets or natural bodies of water to protect the pump from debris.
  • The compact size makes it ideal for camping trips or outdoor activities where a portable cleaning solution is needed.

10. Warranty and Support

For warranty information, technical support, or service inquiries, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.

Ask a question about this manual

Ask about setup, troubleshooting, compatibility, parts, safety, or missing instructions. Manuals+ will review the question and use this page’s manual context to help answer it.

After a successful submission, we securely hash the supplied account or form email before sending it to Microsoft Advertising for conversion attribution. Privacy details.