How accurate is the pressure gauge?

Untimaty rates it at ±1 psi in the 0-40 psi range, widening to ±8 psi between 120 and 150 psi. For car tires in the normal range it is close, but check high-pressure items with a separate gauge.

How long does it take to inflate a tire?

The spec is 0 to 35 psi in 4 to 5 minutes. Topping up a partly low tire is faster than filling one from flat.

Can I use it while plugged in?

Yes. It runs cordless on its 21V battery or plugged in, so a drained battery does not leave you stuck.

What can I inflate with it?

Car and bike tires, plus balls, pool toys and similar items using the included needles and nozzle adapters.

Does it stop automatically?

Yes. Set your target pressure and the auto-stop function cuts inflation when it is reached.

Untimaty lists under 85 dB, which is audible but not deafening. Some owners say it is louder in practice than the figure suggests.

Untimaty Cordless Tire Inflator Portable Air Compressor 150PSI

Best price now

$35.87at WalmartChecked Nov 1

Prices are checked against each store and labelled with when.

Visit Walmart

Untimaty Cordless Tire Inflator Portable Air Compressor 150PSI

Best price now

$35.87at WalmartChecked Nov 1

Prices are checked against each store and labelled with when.

Visit Walmart

Ask our agent about this product

It checks today's price at every store, compares the alternatives and answers in about a minute.

Price facts

Last seen at $35.87 at Walmart on Nov 1.

Our take on the Untimaty Cordless Tire Inflator Portable Air Compressor 150PSI

The Untimaty is a cordless, battery-powered tire inflator with a digital gauge and preset auto-stop, so you set a target pressure and it shuts off on its own. It runs on a 21V battery and can also work plugged in, and it adds a built-in emergency light for night use. It fills from 0 to 35 psi in about 4 to 5 minutes, which is fine for topping up car tires but slow for a fully flat one. Owners rate it around 3.8 out of 5, so expect a capable but not premium tool.

Best forCar owners topping up tires at homeRoadside and emergency inflationNight-time use with the built-in lightInflating bike tires, balls and pool toys with the included adapters

Pros

Preset pressure auto-stop cuts off at your target
Cordless 21V battery plus a plugged-in option
Digital pressure display
Built-in emergency light
Includes needles and nozzle adapters for other inflatables

Cons

Gauge accuracy drifts at high pressure, up to ±8 psi near 120-150 psi
0 to 35 psi takes 4 to 5 minutes, slow for a fully flat tire
Rated under 85 dB, so it is not truly quiet
Only tested for 300+ inflation cycles

Untimaty Cordless Tire Inflator Portable Air Compressor 150PSI prices at every store

WalmartNew
Availability unknown
$35.87Checked Nov 1
Visit Walmart

Untimaty Cordless Tire Inflator Portable Air Compressor 150PSI price history

Lowest price we've seen: $35.87 on Nov 1 at Walmart. Tracked across 1 store since Nov 1.

What reviewers say

3.8 / 5119 ratings

Ratings average 3.8 out of 5 across 119 reviews, a middling score that suggests the auto-stop and cordless convenience land well while accuracy and speed draw complaints.

What people mention

AccuracyCriticisedOwners report the gauge can read off target, more so at high pressures.
Auto-stopPraisedReviewers like that it shuts off at the preset pressure without babysitting.
SpeedMixedTopping up is quick enough, but filling a flat tire takes several minutes.
NoiseCriticisedSome find it louder than the under-85 dB figure implies.
Cordless usePraisedThe battery and plug-in option make it flexible away from power.

About the Untimaty Cordless Tire Inflator Portable Air Compressor 150PSI

The Untimaty Portable Air Compressor is a compact electric tire inflator rated to 150 PSI. It has a digital display and a preset pressure auto-stop function, so it stops inflating at the pressure you set. An automatic emergency light is built in for use at night.

It runs cordless on a 21V battery or plugged in. It inflates from 0 to 35 psi in 4 to 5 minutes and runs at less than 85 dB. It has been tested for more than 300 inflation cycles. Needles, nozzle adapters and other accessories are included.

Type: Electric
Max pressure: 150 PSI
Dimensions: 22 x 7 x 24 cm
Battery voltage: 21V
Power: Cordless and plugged-in operation
Inflation speed: 0 to 35 psi in 4 to 5 minutes
Gauge accuracy: ±1 psi (0-40 psi range), up to ±8 psi (120-150 psi range)
Noise level: Less than 85 dB
Features: Digital display, preset pressure auto-stop, automatic emergency light
Durability: Tested for 300+ inflation cycles
In the box: Needles, nozzle adapters, and more

Specifications

Type: Electric

Questions and answers

How accurate is the pressure gauge?: Untimaty rates it at ±1 psi in the 0-40 psi range, widening to ±8 psi between 120 and 150 psi. For car tires in the normal range it is close, but check high-pressure items with a separate gauge.
How long does it take to inflate a tire?: The spec is 0 to 35 psi in 4 to 5 minutes. Topping up a partly low tire is faster than filling one from flat.
Can I use it while plugged in?: Yes. It runs cordless on its 21V battery or plugged in, so a drained battery does not leave you stuck.
What can I inflate with it?: Car and bike tires, plus balls, pool toys and similar items using the included needles and nozzle adapters.
Does it stop automatically?: Yes. Set your target pressure and the auto-stop function cuts inflation when it is reached.
Is it quiet?: Untimaty lists under 85 dB, which is audible but not deafening. Some owners say it is louder in practice than the figure suggests.
Where is the Untimaty Cordless Tire Inflator Portable Air Compressor 150PSI cheapest?: At Walmart, for $35.87, as of our latest check.
What do buyers say about the Untimaty Cordless Tire Inflator Portable Air Compressor 150PSI?: Rated 3.8 out of 5 from 119 ratings.