AstroAI CZK-3631 12V DC Digital Tyre Inflator

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Product guide

AstroAI CZK-3631 12V DC Digital Tyre Inflator

The AstroAI CZK-3631 is a 12V DC digital tyre inflator for car and other compatible tyres. Its preset pressure auto-stop, backlit display and flashlight are useful for roadside top-ups, while the listing’s compact-SUV suitability claim should be treated in light of its stated 35 PSI maximum pressure.

At a glance

Preset the target pressure and the inflator is claimed to stop automatically when it reaches that setting.
The digital display offers four pressure units, with a backlight and separate flashlight button for dim conditions.
The listing describes it as compact and suitable for storage in a vehicle.
The stated air flow is 35 Litres Per Minute, but the separate maximum-pressure figure is 35 PSI.

Price

£24.95Save 22%

Reference price: ~~£31.99~~

Price checked: 14 Nov 2026

View offer

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Pros and cons

Pros

Preset pressure and automatic shut-off reduce the need to watch the gauge continuously.
The backlit display and one-button flashlight support use in low light.
Listed with a Schrader hose and adapters for Presta valves, needle valves and inflatables.

Cons

The stated 35 PSI maximum pressure limits its headroom compared with inflators rated for higher-pressure tyres.

Technical specifications

19 specifications

Identity
Brand	AstroAI
Model	CZK-3631

Power and performance
Power configuration	12V DC
Voltage	12 Volts
Maximum power	120 Watts
Maximum current	15 Amps
Air flow capacity	35 Litres Per Minute
Maximum pressure	35 Pound per Square Inch
Maximum horsepower	0.16 Horsepower

Controls and connections
Features	Digital, memory function
Compatible hose diameter	1 Centimetres
Hose length	10 Feet

Dimensions and construction
Weight listed	800 Grams
Listed capacity	998 g
Dimensions	20L x 7W x 16H centimetres
Material listed	ABS Shell, Metal Cylinder, Copper Motor
Colour	Blue
Shape	Oval

Listed uses
Recommended uses	Tyre Inflator for Compact SUV MPV Sedan Motorcycle Bike, Ball Pump

What to know before buying

Listing details to confirm

The listing claims compact-SUV use and describes the pump as fast, but its listed maximum pressure is only 35 PSI. Confirm that this is sufficient for the target tyre before buying, and follow the vehicle's recommended pressure rather than the pump's maximum.

What’s in the box

Included

AstroAI H1 tyre inflator with Schrader air hose ×1
Replacement nozzle ×1
Presta adapter ×1
Needle valve adapter ×1
Tapered air nozzles ×2
User manual

Who is it for?

A good fit for

Drivers wanting a compact 12V DC inflator for routine top-ups on compatible car, motorcycle or bicycle tyres.
Buyers who prefer preset pressure with automatic shut-off and a lighted display.

Less suited to

Those needing an inflator with a maximum pressure above 35 PSI.
People who need a cordless pump or a mains-powered option. The supplied configuration is listed as 12V DC.

AstroAI CZK-3631 12V DC Digital Tyre Inflator · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.5 / 5 · 102,802 ratings

5 stars72%72%
4 stars20%20%
3 stars4%4%
2 stars1%1%
1 star3%3%

Customer feedback highlights convenience, compact size, pressure setting and quick inflation, with reports that the pump can stop at the chosen pressure. Reliability and noise draw mixed reactions, including reports of early failure and differing impressions of loudness. For occasional top-ups, the preset shut-off and compact design may be useful, but reported reliability concerns matter if you need dependable repeated use. These experiences do not establish how any individual unit will perform.

Positive themes

Customers report compact storage and convenient operation.
Feedback describes quick inflation and appreciation for setting the desired pressure.

Mixed feedback

Reliability feedback is mixed, including reports of the unit failing after a few uses.
Noise impressions differ, with some finding it quieter than other models and others describing it as noisy.

Frequently asked questions

What power supply does the AstroAI CZK-3631 use?

It is listed as a 12V DC inflator. The supplied information does not identify a cordless battery or mains power option.

Does it stop when the preset pressure is reached?

The listing says you can set a target pressure and the pump will shut off automatically when it reaches that setting. It also advises setting a pressure higher than the tyre’s current pressure.

Is it suitable for a compact SUV?

The title and recommended-use listing claim compact-SUV suitability, but the stated maximum pressure is 35 PSI. Compare that limit with the tyre’s required pressure before purchase.

What accessories are listed?

The listed contents include a Schrader air hose, replacement nozzle, Presta adapter, needle valve adapter, two tapered air nozzles and a user manual.