ST18 Cordless Power Washer, 3.0AH Battery 800 PSI
Enjoy powerful, cordless cleaning with 21V pressure washer. Delivers 800PSI, 1.5GPM, and up to 45 mins of runtime. Includes 6 spray modes, foam cannon, 5m hose, and works with any water source. Lightweight and portable—perfect for cars, patios, RVs, and more. Total kit with case included.
Portable Cordless Pressure Washer for Cars, Outdoor
Cordless 21V pressure washer delivers 800PSI power, 6 spray modes, thick foam, and 45-min runtime. Includes full pro kit—ideal for cars, patios, RVs, and more. Lightweight, fast-charging, and works with bottles or buckets. Just 2.85 lbs for easy use anywhere. Suitable for Cars, Fences, Home, Patios.
Product Features:
Ultimate Portability & Cordless Convenience
Enjoy total freedom with this 20V battery-powered pressure washer (includes 1x 3.0Ah battery). Delivers up to 45 minutes of cleaning power—perfect for washing cars, patios, and outdoor gear. Fully recharges in just 3 hours with dual-speed fast charging.
800PSI of Real Cleaning Power
Unlike exaggerated claims, our upgraded 550-brush motor provides a genuine 800PSI of pressure and a 1.5GPM flow rate. Blast away tough dirt from driveways, decks, and vehicles with a 10-meter reach—all without wasting water.
6-in-1 Nozzle & Foam Cannon
Switch between 6 spray modes (0°, 15°, 25°, 40°, Jet, Shower) for any cleaning task. The upgraded foam cannon produces 50% thicker foam for better car detailing. Comes with a weighted intake filter that stays submerged for consistent water flow.
Versatile Water Source Compatibility
Draw water from buckets, soda bottles (adapter included), or pools. Our patented sinking filter offers 30% better suction efficiency than floating types. The 5-meter reinforced hose resists kinks and extends your reach with ease.
Complete Pro Kit Included
Everything you need: 6-mode spray gun, 5m hose, foam cannon, bottle adapter, premium filter, battery, charger, and a rugged carrying case. It's 40% lighter than gas washers—great for RVs, apartments, or mobile detailers.
Please Note:
① All units are tested for waterproofing and battery performance before shipping, so light moisture inside is normal.
② This washer doesn’t have a flow-stop function—avoid direct faucet use to prevent leaks.
Specifications:
Model: ST18
Color: Black, Red
Hose Length: 16.4 Feet
Item Weight: 7.72 Pounds
Power Source: Battery Powered
Style: 1 x Battery, 2 x Battery (Options)
Maximum Flow Rate: 1.5 Gallons Per Minute
Rated Power: 110W
Maximum Pressure: 800 PSI/1.5GPM
Product Dimensions: 16.54"L x 13.11"W x 5.04"H
Package Includes:
Charger *1
Manual *1
Water Filter *1
Hose Adapter
Lithium Battery
Bottle Connector
5m Long Water Hose *1
Removable Foam Bottle *1
Cordless Pressure Washer *1
6-in-1 Multi-function Nozzle *1
Customer Reviews
With 800 PSI and 1.5 GPM, this thing packs a serious punch, delivering way more force than your childhood water blaster ever dreamed of. It doesn’t just spray—it attacks dirt, mud, and stubborn gunk with a vengeance. The 6-in-1 nozzle adds versatility, letting you adjust from gentle spray to full-blown pressure surge, kind of like switching from casual mist to "absolutely wreck everything in its path" mode. It’s not quite a full-sized pressure washer, but for quick cleanups, car washes, and patio maintenance, it’s perfect.
Worked great right out of the box! Tested it on my patio and it’s a remarkable difference!
This cordless pressure washer exceeded my expectations right out of the box. First of all, the battery arrived fully charged, which was a nice surprise and meant I could jump right into using it. Assembly was super easy; I didn’t even need the instructions, though I did glance at them to figure out what a couple of the optional add-ons were for. Everything clicked into place smoothly. Highly recommend for anyone who wants an easy-to-use pressure washer without the hassle of gas or cords! I know I'll be hesitant to use it on the full blast stream setting at first. I don't want to remove my car's paint! That is probably a better setting for the tires. lol Overall, it's very easy for anyone to use, even if you've never handled a pressure washer before (like me). I'm very pleased.
This comes in a case and really has everything needed. I charged it up and spread the lawn with fertilizer. The 40-degree spray sent the liquid about eight feet. Good enough for me, but I'm not washing cars all day with it, either.
The Andeman Cordless Pressure Washer with a 3.0Ah battery, 800 PSI, and 1.5 GPM flow rate is designed for portability and versatility, making it a practical choice for cleaning cars, patios, fences, and more. The 6-in-1 nozzle offers flexibility for different spray patterns without the hassle of changing attachments, and the included foam bottle is a bonus for car washing. Assembly is straightforward, and the unit is lightweight and compact for easy storage. However, it may not be ideal for heavy-duty cleaning tasks like stripping paint or deep-cleaning concrete. The pressure is best for maintenance rather than deep grime removal. All in all, excellent value for the money.
Processing Time
In 24 hours during the business days for all orders. Note: Business days are defined as Monday through Friday, except holidays.Shipping Fee & Shipping Time
Free Standard Shipping on All Orders. Shipping Time: 3-7 Business Days for All Orders.Note
You will need to fill in the shipping address at checkout to know if the product is in stock to ship to that area.How to Change Shipping Address
If you placed you order with a wrong address, please contact us to help you to change as soon as possible. Please kindly note that you can only change the address before your purchase is shipped.Guarantee
30-Day Money Back GuaranteeTracking number for every order
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Contact Andeman
Email:
andeman@andeman.com
Email Reply Time: 9am to 6pm, From Monday to Friday(Hong Kong time zone).
We look forward to responding to your inquiry within 48 hours of the business day.
Telephone:
+852 81916599
Telephone Reply Time: 8pm to 5am, From Monday to Friday(Hong Kong time zone).
Please click here to download the product manual.