Milwaukee M12 Inflator 2475-20
#17 in CordlessFull review
For M12 owners who want a compact cordless inflator for car tires and top-ups. M18 owners or anyone with truck tires should look at the faster 2848-20.
Amazon $112$112
The Milwaukee M12 Inflator 2475-20 rates 3.5 among cordless tire inflators; the Slime 40047 Rugged Digital rates 3.1 among 12 V plug-in ones. The Slime 40047 Rugged Digital costs $76.02 less ($35.98 vs $112).
Slime 40047 Rugged Digital
#5 in 12 V plug-inFull review
For car owners who want a cheap set-and-forget pump for topping up tires. Larger tires need a faster compressor.
Amazon $35.98$35.98
Prices were last checked October 31, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
These two sit in different type classes (cordless and 12 V plug-in), and each is scored against the reference points for its own class, so a rating says how well each does among its own type peers. How we rank explains each factor.
| Factor weight | Milwaukee M12 Inflator 2475-20 | Slime 40047 Rugged Digital |
|---|---|---|
| Overall rating | 3.5/5 | 3.1/5 |
| Value 35% | 45 $112 without battery | 73 $35.98 |
| Airflow 30% | 33 24.9 L/min (maker) | 17 26.9 L/min (maker) |
| Features 20% | 75 auto shutoff, 120 PSI max | 70 auto shutoff |
| Warranty 15% | 100 3-year warranty | 0 1-year warranty |
Specifications
| Milwaukee M12 Inflator 2475-20 | Slime 40047 Rugged Digital | |
|---|---|---|
| Inflating | ||
| Max pressure | 120 PSI | - |
| Airflow (maker) | 24.9 L/min | 26.9 L/min |
| Auto shutoff | Yes | Yes |
| Duty cycle | 50% | - |
| Power | ||
| Power | Milwaukee M12 battery (sold separately) | 12 V socket |
| Power bank | - | No |
| Power cord | - | 10 ft |
| Build | ||
| Air hose | 26 in | 24 in |
| Light | Yes | Yes |
| Dimensions | 7.5 x 6.5 x 6.5 in | - |
| Weight | 3.5 lb | - |
| Warranty | 3 years | 1 year |
| Released | 2018-05 | 2022-06 |