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.

The short answer

Slime Cordless Pro Power comes out ahead by a narrow margin (4.3 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

4.3

$70as of May 28

The AVID Power is the budget cordless pick: a detachable 20V battery, a 12V car adapter as backup, a drill-style grip and a digital gauge for around $70. Automoblog scored it 88/100. It is slower and less rugged than the premium units and some owners flag durability, but for an affordable, maneuverable car-and-bike inflator it delivers solid value.

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

$70 · Check Price on Amazon Full review →

Higher ratedRanked #3 in Best Portable Tire Inflators

Slime Cordless Pro Power

4.5

$115as of May 28

The Slime Cordless Pro Power is the best self-contained pick: it runs cordless on its own battery, falls back to a 12V cable if it dies, and auto-stops at your target pressure. Pro Tool Reviews scored it 9.4/10 and Automoblog 85/100. It is slower and lower-pressure than the Milwaukee and Viair, but the hybrid power and auto shut-off make it the most foolproof 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

$115 · Check Price on Amazon Full review →

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
Nozzles	Tire, ball, inflatable	—
Display	Digital PSI/KPA/BAR/KG	Clear-view LED
Light	LED flashlight	—
Includes	Battery, charger, case	—
Charging	—	USB-C, ~4 hr
Auto Shut-Off	—	Inflate-Right Technology
Tires Per Charge	—	Up to 3
Charge Retention	—	~4 months

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