Head-to-head · Best Portable Tire Inflators

AVID POWER Cordless Inflator vs Slime Cordless Pro Power

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

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The short answer

Slime Cordless Pro Power comes out ahead by a narrow margin (4.4 vs 4.5). The gap is mostly about drivers who want a foolproof cordless inflator with a 12V backup and automatic shut-off — read the strengths below before deciding.

Ranked #4 in Best Portable Tire Inflators

AVID POWER Cordless Inflator

4.4

1 sourceall derived$52.78as of Aug 1

Around $70 buys the AVID Power's detachable 20V battery, a 12V car adapter for backup, a drill-style grip and a digital gauge, which makes it the budget cordless pick. Automoblog scored it 88/100. It runs slower and less rugged than the premium units, and some owners flag durability, but as an affordable, maneuverable inflator for cars and bikes the value is solid.

Strengths

— Inexpensive cordless inflator with a detachable 20V battery and 12V car adapter
— Drill-style grip is easy to maneuver around tight valve stems
— Filled a Camry tire from 20.5 to 35 PSI in about 2 minutes 32 seconds in testing

Watch-outs

— Some owners report durability and longevity issues
— Slower and less powerful than the Milwaukee M18 or Viair 88P
— Battery runtime is limited; not built for many tires in a row

$52.78 · Check Price on Amazon Full review →

Higher ratedRanked #2 in Best Portable Tire Inflators

Slime Cordless Pro Power

4.5

2 sourcesall derived$116.04as of Aug 1

Self-contained is the Slime Cordless Pro Power's advantage: it runs cordless on its own battery, drops back to a 12V cable when that dies, and auto-stops once it hits your target pressure. Pro Tool Reviews scored it 9.4/10 and Automoblog 85/100. It works slower and at lower pressure than the Milwaukee and Viair, yet the hybrid power and auto shut-off make it the most foolproof choice for most drivers.

Strengths

— Hybrid design works cordless on its internal battery or wired via the included 12V cable
— Inflate-Right Technology auto-shuts off at the set pressure, no gauge-watching needed
— Fills up to three standard car tires from flat per charge

Watch-outs

— Roughly four-hour USB-C recharge is slow
— Fills more slowly than the Milwaukee M18 or Viair 88P at about three minutes per tire
— 99 PSI ceiling is lower than the 120-150 PSI rivals

$116.04 · Check Price on Amazon Full review →

Derived means the reviewer published no score, so one was inferred from their written verdict. Everything else is a number the publisher printed. How we rank.

How they stack up

AVID POWER Cordless Inflator

The budget cordless choice, cheaper than the Milwaukee M18 Inflator (2848-20) and the Slime Cordless Pro Power, with a detachable 20V battery and a 12V car-adapter backup. It is slower and less rugged than those and than the corded Viair 88P, but the most affordable cordless option here.

Slime Cordless Pro Power

The most self-contained option, the only one here that runs cordless and still has a 12V fallback if the battery dies. It is slower and lower-pressure than the Milwaukee M18 Inflator (2848-20) and the Viair 88P, but more foolproof than older corded inflators and a step up in features from the budget AVID Power.

Specs side-by-side

Spec	AVID POWER Cordless Inflator	Slime Cordless Pro Power
Max PSI	150	99
Power Source	20V battery + 12V car adapter	Internal battery + 12V cable
Accuracy	Within ~2 PSI	—
Fill Time	~2.5 min (15 PSI top-up, Camry)	~3 min per tire
Display	Digital PSI/KPA/BAR/KG	Clear-view LED
Weight	~1.5 lb	—
Auto Shut-Off	Yes, digital preset	Inflate-Right Technology
Max Tire Size	245mm	—
Voltage	20 volts	—

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