1–4 on published sub-scores
Avid Power AC/DC Portable Air Compressor vs Milwaukee M12 Cordless Tire Inflator 2475-20
Both units have been through the same bench protocol. Avid Power AC/DC Portable Air Compressor takes 1 of the five sub-scores we publish, Milwaukee M12 Cordless Tire Inflator 2475-20 takes 4. The specs and the trade-offs below are what actually separate them.
This page compiles the hands-on testing we have already published in the individual reviews. It adds no new measurements: every score, spec and figure below comes from the linked review.
Avid Power
Avid Power AC/DC Portable Air Compressor
The most flexible compressor under $70: AC power at home for garage duty, 12V for roadside emergencies. It gives up a little speed and gauge accuracy for that versatility.
Milwaukee
Milwaukee M12 Cordless Tire Inflator 2475-20
The most precise and best-built portable inflator here. Its gauge and auto shut-off are flawless, and it tops up car tires in under two minutes — but a 2.0Ah pack runs out before the fourth tire.
Sub-scores from our reviews
The five dimensions behind every overall score on this site, taken verbatim from each review. A dash means the review does not publish that sub-score.
| Dimension | Avid Power AC/DC Portable Air Compressor | Milwaukee M12 Cordless Tire Inflator 2475-20 |
|---|---|---|
| Inflation speed | 4.2 | 4.4 |
| Gauge accuracy | 3.8 | 5.0 |
| Build quality | 4.4 | 4.9 |
| Portability | 3.6 | 4.8 |
| Value | 4.4 | 4.1 |
| Overall score | 4.3 | 4.6 |
| Typical price | $59.99 | $99.00 (bare tool) |
Specifications both publish
| Spec | Avid Power AC/DC Portable Air Compressor | Milwaukee M12 Cordless Tire Inflator 2475-20 |
|---|---|---|
| Maximum pressure | 150 PSI | 120 PSI |
| Air flow | 1.4 CFM at 0 PSI on AC, 1.3 CFM on DC | 0.6 CFM at 0 PSI |
| Power source | 120V AC wall power and 12V DC cigarette plug | Milwaukee M12 12V battery (bare tool) |
| Hose length | 3 ft hose with 1 ft extension | Built-in 4 in chuck, no hose |
| Duty cycle | 15 minutes on, 10 minutes off | Continuous with thermal protection |
| Weight | 4.9 lb (2.22 kg) | 3.2 lb (1.45 kg) with a 4.0Ah battery |
| Included adapters | Presta adapter, ball needle, nozzle adapter, carry case | Presta adapter, ball inflation needle, storage case |
What you accept with each
Avid Power AC/DC Portable Air Compressor
- Analog gauge read about 2.5 PSI high in both modes
- Bulky and heavier than a pure 12V inflator — 4.9 lb
- No auto shut-off, so you still have to watch the dial
- AC cord is only 5 ft, which often means an extension cord
Milwaukee M12 Cordless Tire Inflator 2475-20
- $99 bare tool, and you need M12 batteries and a charger on top
- A 2.0Ah compact pack ran out during the fourth tire in our runtime test
- No 12V car adapter in the box — battery power only
- 0.6 CFM makes large truck tires a slow job
Which one, for whom
Choose the Avid Power AC/DC Portable Air Compressor if you weight value more heavily, and the lower price ($59.99 against $99.00 (bare tool)) matters.
Choose the Milwaukee M12 Cordless Tire Inflator 2475-20 if you weight inflation speed, gauge accuracy, build quality, portability more heavily.
Neither is a bad unit — both cleared the same protocol. Read the two full reviews before deciding: Avid Power AC/DC Portable Air Compressor review and Milwaukee M12 Cordless Tire Inflator 2475-20 review.