The Fanttik NB8 Ultra is a cordless pressure washer that draws from its own water tank rather than a tap, which makes the first-use workflow a little different from a corded plug-and-spray unit. This guide walks you through filling the tank, choosing a pressure mode, picking the right nozzle angle, and using the Total Stop System safely — so you get full pressure on your first pull of the trigger.
Before You Start — What's in the Box
The NB8 Ultra ships as a kit: the cordless washer body with its built-in LED screen, a detachable 15L water tank, a spray gun with a 6-meter (20-foot) hose, the 5-in-1 adjustable nozzle, and a mesh storage bag that holds the tank, hose, and nozzle accessories together. The unit is battery powered and cordless, so there is no power cord to route to an outlet during use.
Quick Spec Sheet
| Feature | NB8 Ultra |
|---|---|
| Pressure modes | Low 300 PSI / Middle 500 PSI / High 725 PSI |
| Water tank | 15L detachable |
| Runtime | Up to 58 minutes |
| Nozzle | 5-in-1 (0° / 15° / 25° / 40° / 65° foam) |
| Hose length | 6 meters (20 feet) |
| Display | LED screen — pressure flow, power, and mode |
| Auto-stop | Total Stop System (TSS) — pump shuts off when the trigger is released |
| Water resistance | IPX5 |
| Power | Cordless, battery powered |
Step 1: Charge the Battery
The NB8 Ultra is cordless and runs on a built-in rechargeable battery. Charge it fully before your first use — a unit that has been sitting in storage may have self-discharged. The LED screen indicates power level, so confirm you have a healthy charge before starting a job. The washer delivers up to 58 minutes of runtime on a charge, which covers most car-wash or patio sessions in one go.
Step 2: Fill the Water Tank
Detach the 15L water tank and fill it with clean, cool tap water. Do not add detergent, bleach, or any solvent directly into the water tank unless the product instructions specifically allow it — abrasive or chemical additives can damage the pump seals. If you want to apply soap, use the foam (65°) nozzle setting with a compatible foaming solution rather than dosing the tank. Reseat the tank firmly so it locks into the body before powering on.
Step 3: Connect the Hose and Spray Gun
Attach the 6-meter (20-foot) hose to the washer body and to the spray gun, making sure each end is fully seated. A loose hose connection is the most common cause of weak or pulsing pressure. Keep the hose free of sharp kinks while you work — a kinked hose restricts flow and can make the pump cycle harder than it needs to.
Step 4: Choose a Pressure Mode
The NB8 Ultra has three pressure modes shown on the LED screen. Match the mode to the job:
- Low — 300 PSI: the energy-saving mode, suitable for light cleaning, watering plants and trees, and general yard maintenance.
- Middle — 500 PSI: the standard mode, ideal for washing furniture, barbecue grills, and everyday grime.
- High — 725 PSI: the maximum mode for stubborn dirt, caked-on mud, and heavier cleaning tasks.
Start on a lower mode for delicate surfaces and step up only if you need more force. The LED screen shows the current pressure flow, power level, and selected mode so you always know what setting you are on.
Step 5: Pick the Right Nozzle Angle
The 5-in-1 nozzle head rotates through five spray angles. Wider angles spread the water over a larger area at lower intensity; narrower angles concentrate it for stubborn spots:
- 0°: a concentrated jet for precise dirt removal on a small, tough spot.
- 15°: small areas of stubborn stains — washing cars, lawnmowers, and boats.
- 25°: medium sites such as yards and fences.
- 40°: a garden-friendly fan for plants and broader surfaces.
- 65°: the widest fan, used with foam for spreading washing solution evenly over large areas.
Keep the 0° jet moving and hold it back from soft surfaces like car paint, wood, or window screens — a tight jet held in one place can mark or gouge.
Step 6: Spray, and Let TSS Do the Rest
Squeeze the trigger to start spraying. The NB8 Ultra is equipped with a Total Stop System (TSS): when you release the trigger, the pump automatically shuts down, so the motor is not running and the battery is not draining between passes. This is normal and is the unit conserving power — the pump spins back up the instant you pull the trigger again. Because the washer is cordless and IPX5 rated, you can move freely around a vehicle or patio without worrying about a trailing power cord, but still avoid fully submerging the body or aiming the spray at the LED screen or charging port.
Step 7: Shut Down and Store
When you finish, release the trigger and power the unit off. Empty any remaining water from the 15L tank rather than leaving it to sit — standing water can grow algae and can freeze in cold storage. Run the trigger briefly with the tank empty to clear water from the pump and hose if you are storing for a long period. Coil the hose without tight kinks and pack the tank, hose, and nozzle accessories into the included mesh bag. Store the washer in a dry place and keep it charged for the next job.
FAQ
Q: Does the Fanttik NB8 Ultra need to connect to a garden tap?
A: No. It is a cordless unit that draws from its own detachable 15L water tank, so you can use it anywhere you can carry water — no hose bib required.
Q: The pump stops the moment I let go of the trigger. Is that a fault?
A: No. That is the Total Stop System (TSS) working as designed. The pump shuts off automatically when the trigger is released to save power, and restarts when you squeeze the trigger again.
Q: Which pressure mode should I use to wash my car?
A: Start on Low (300 PSI) or Middle (500 PSI) and keep the nozzle on a wider angle like 15° or 25°. Reserve High (725 PSI) and the 0° jet for stubborn, caked-on dirt, and keep the spray moving to protect the paint.
Q: Can I put soap or detergent in the water tank?
A: Avoid adding chemicals directly to the tank unless the product instructions specifically allow it. For washing solution, use the 65° foam nozzle setting with a compatible foaming product instead.
Q: How long does a full charge last?
A: The NB8 Ultra delivers up to 58 minutes of runtime per charge. Actual time depends on the pressure mode you use — higher modes draw more power and shorten the session.
Q: Is it safe to use in the rain or near water?
A: The unit is IPX5 rated, so it resists water jets and handles wet outdoor use. Even so, do not submerge the body and avoid directing the spray straight at the LED screen or charging port.
Related Support
- Fanttik Pressure Washer Manual — where to find the manual, spec details, and setup reference for the NB8 Ultra
- Fanttik Pressure Washer Won't Turn On — troubleshooting steps if the unit won't power up
- Fanttik NB8 Ultra product page
- Fanttik Support Center
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