AstroAI CZK-3631 12V DC Digital Tyre Inflator

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Product guide

AstroAI CZK-3631 12V DC Digital Tyre Inflator

AstroAI CZK-3631 is a 12V DC digital tyre inflator with preset pressure and automatic shut-off. Its compact, lightweight format and LED light suit keeping a pump in the car for tyre top-ups, while its 12V supply means it is intended for vehicle power rather than cordless use.

At a glance

Preset pressure with automatic shut-off is designed to stop inflation at the set target. The listing says the target must be higher than the tyre's current pressure.
A backlit screen and separate LED light button support use in dim conditions.
The listing describes a compact design for storage in a glove compartment, seat or boot.

Price

£22.89Save 24%

Reference price: ~~£29.99~~

Price checked: 12 Nov 2026

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Pros and cons

Pros

Preset pressure and automatic shut-off reduce the need to watch the gauge continuously during inflation.
The included LED light and backlit screen are useful when checking tyres in poor light.
Listed for car, motorcycle, bike and ball inflation, with nozzle adapters named in the included-components list.

Cons

It requires a 12V DC supply, so the listing does not describe cordless operation.
The listed hose is 50 centimetres long, which may limit positioning flexibility around a vehicle.

Technical specifications

16 specifications

Identity
Brand	AstroAI
Model	CZK-3631

Power and operation
Power configuration	12V DC
Voltage	12 Volts (DC)
Maximum power	120 Watts
Airflow capacity	35 Litres Per Minute
Maximum pressure	100 Pound per Square Inch
Noise level	80 Decibels

Features and intended use
Special features	LED Light, Built-In Gauge, Preset, Auto-shutoff & Mermory Function, Ultrafast 1-min Inflation
Recommended uses	Tyre Inflator for Compact SUV MPV Sedan Motorcycle Bike, Ball Pump
Style	Digital
Colour	Yellow

Dimensions and installation
Weight listed	800 Grams
Dimensions	20L x 7W x 16H centimetres
Hose length	50 Centimetres

Materials and protection
Material listed	ABS Shell, Metal Cylinder, Copper Motor

What to know before buying

Listing details to confirm

The stated 35 Litres Per Minute airflow and 100 Pound per Square Inch maximum pressure are listing claims, not independent performance measurements. The advertised one-minute inflation claim does not specify tyre size or starting pressure, so treat it as conditional rather than a general inflation time.

What’s in the box

Included

Replacement fuse
Air nozzle cones (2)
Needle valve adapter
Adapter
Extension hose connector
User manual

Who is it for?

A good fit for

Drivers wanting a compact 12V pump for occasional tyre pressure top-ups in a car, compact SUV, MPV or saloon.
People who value preset pressure, automatic shut-off and a light for use in darker conditions.
Buyers seeking a pump that the listing also identifies for motorcycles, bikes and balls.

Less suited to

Anyone needing a cordless inflator or a pump that can be powered away from a vehicle's 12V supply.
Buyers who need a longer hose or verified inflation times for a particular tyre size.

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

Customer reviews on Amazon

4.5 / 5 · 102,780 ratings

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

Customer feedback highlights compactness, convenient pressure setting and reports of quick inflation, with some customers saying the pump stops at the selected pressure. Reliability and noise are mixed, including reports of early failure and differing views on loudness. These are customer perceptions rather than verified performance findings. The preset shut-off and small listed size suit occasional vehicle top-ups, but buyers who need dependable frequent use should weigh the reported reliability concerns.

Positive themes

Customers describe the unit as compact and convenient to store.
Feedback mentions easy pressure setting and positive experiences with inflation speed.

Negative themes

Some customer feedback reports the unit failing after only a few uses.

Mixed feedback

Noise feedback differs, with some finding it quieter than other pumps and others describing it as noisy.
Reliability experiences are mixed, despite reports of automatic shut-off at the selected pressure.

Frequently asked questions

How is the AstroAI CZK-3631 powered?

It is listed as a 12V DC inflator. The supplied information does not describe cordless operation.

Does it stop automatically at a chosen pressure?

The listing describes preset pressure and automatic shut-off. It says to set a target above the tyre's current pressure.

What can it inflate?

The listing identifies compact SUVs, MPVs, saloons, motorcycles, bikes and balls as intended uses. Confirm that the supplied adapters and valve fit your item.

Is the advertised one-minute inflation time guaranteed?

No. The listing gives an 'Ultrafast 1-min Inflation' claim without specifying tyre size or starting pressure, so it does not establish a general inflation time.