JIAQINGDA 8100 21V Cordless Pressure Washer

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Product guide

JIAQINGDA 8100 21V Cordless Pressure Washer

Cordless: The JIAQINGDA 8100 is a battery-powered handheld pressure washer listed with two 21V batteries, a 5-metre hose and a six-in-one nozzle. Its stated 580 PSI maximum pressure and 4-litre-per-minute maximum flow point to portable cleaning for cars and smaller outdoor jobs rather than a substitute for a mains-powered washer.

At a glance

Cordless operation is suited to cleaning where a power cable is inconvenient.
The listing claims two 21V batteries and up to 45–60 minutes of combined use, with the stated runtime applying to both batteries.
A six-in-one nozzle offers several spray patterns, and a foam pot is listed for applying foam.
The claimed 580 PSI maximum pressure and 4 litres per minute maximum flow give a useful scale for assessing it against larger, mains-powered washers.

Price

£25.49Save 15%

Reference price: ~~£29.99~~

Price checked: 12 Nov 2026

View offer

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Pros and cons

Pros

Two batteries are claimed in the kit, with a combined runtime estimate stated for their use.
A 5-metre hose and adjustable spray options support movement around a vehicle and varied small cleaning tasks.
A foam pot is listed for foam application.

Cons

Customer feedback includes reports of insufficient power, which may matter for buyers expecting forceful cleaning of demanding jobs.

Technical specifications

14 specifications

Identity
Brand	JIAQINGDA
Model	8100

Power and battery
Power configuration	Battery Powered
Battery voltage	21V
Batteries included, as claimed	two advanced durable 21V batteries
Claimed combined runtime	up to 45 - 60 minutes( 2 batteries)

Cleaning performance
Maximum pressure	580 Pound per Square Inch
Maximum flow rate	4 Litres Per Minute
Motor	300W pure copper motor
Listed spray patterns	0°, 15°, 25°, 40°, concentrated jet, shower mode

Dimensions and installation
Dimensions listed	43L x 6W x 11H centimetres
Weight listed	2.3 Kilograms
Hose length	5 Metres

Appearance
Colour	Black

What to know before buying

The manufacturer advises fully charging the battery before use and says not to connect the washer to a tap. It also says water droplets inside the washer may be normal after factory testing.

Listing details to confirm

The listing presents battery runtime as a combined 45–60 minutes for two batteries, not a per-battery duration. Real-world runtime is not specified. Listing details are inconsistent or unconfirmed: the title and feature text claim a two-battery kit and a six-in-one nozzle, while there is no explicit package inventory in the supplied box data. The listed dimensions and weight are manufacturer claims, and the stated pressure, flow and runtime are not independently verified. Check the selected listing for the delivered components and operating expectations.

Who is it for?

A good fit for

Buyers seeking a cordless washer for car cleaning, bikes, garden tools or other smaller outdoor tasks.
People who value a handheld format, multiple spray patterns and a foam pot over the greater demands of heavy-duty cleaning.

Less suited to

Buyers needing strong, sustained cleaning for large areas or stubborn, heavy-duty dirt.
Anyone who needs confirmed battery runtime or a fully itemised package list before purchase.

JIAQINGDA 8100 21V Cordless Pressure Washer · photo 2 — Additional product photo 2

Customer reviews on Amazon

3.7 / 5 · 123 ratings

5 stars45%45%
4 stars21%21%
3 stars9%9%
2 stars8%8%
1 star17%17%

Customer feedback is mixed. Some buyers find it effective for car cleaning and small jobs, while others report that it did not work or lacked power. Battery life, quality, effectiveness and value also draw differing views, including concerns that batteries may not hold charge. This makes the washer's stated 580 PSI maximum and claimed two-battery runtime worth treating as listing claims rather than a guarantee of suitability for demanding or prolonged work.

Positive themes

Some customers find it effective for car cleaning and small jobs.

Negative themes

Some customers report that the washer does not work at all.
Some customers say it lacks sufficient power.
Some customers report that the batteries do not hold a charge.

Mixed feedback

Customer views differ on battery life, product quality, cleaning effectiveness and value for money.

Frequently asked questions

How much pressure does the JIAQINGDA 8100 claim?

The listing states a maximum pressure of 580 Pound per Square Inch. It is a manufacturer claim, not an independently verified measurement.

How long is the claimed battery runtime?

The listing claims up to 45–60 minutes using two batteries together. It does not give a per-battery runtime, and customer feedback about battery life is mixed.

What spray options are listed?

The six-in-one nozzle is described as offering 0°, 15°, 25° and 40° patterns, plus concentrated jet and shower modes.

Can it be connected directly to a tap?

The listing's warm tip says not to connect a tap to the washer. Follow the supplied instructions for water intake and setup.