Milwaukee M12 Compact Inflator (2475-20)

The Milwaukee 2475-20 is a cordless inflator on the M12 battery platform (battery sold separately). Connect the 26-inch brass Schrader chuck to the valve stem, set your target pressure on the backlit digital display, and press the trigger · TrueFill auto-shutoff engages when the tire reaches your preset. Multiple community testers cross-checked the shutoff against calibrated mechanical gauges and confirmed ±3% accuracy consistently. Top-off performance is the strong suit: 28→35 PSI in under 60 seconds on passenger cars and 30→45 PSI in under 4 minutes on light-truck tires, per both manufacturer specs and multiple independent reviews. Full flat-from-zero timing for a standard passenger-car tire has not been documented in the community corpus · all confirmed timing data covers top-off scenarios. Thermal management matters: the unit is rated 50% duty cycle (10 minutes on, 10 minutes off), and one tester confirmed thermal shutdown during extended inflation of a 35-inch tire from flat. For a typical four-tire top-off session this is not an issue. Long-term reliability is mixed: the broad owner consensus is strong, but some owners report piston reed and seal failures, and Milwaukee does not sell repair parts for inflators.

The right buyer already owns M12 tools and wants a tire inflator that runs on the same battery system. At 120 PSI rated and confirmed community performance on passenger cars and light trucks, it covers the vast majority of daily-driver use cases. Skip it if you regularly need to inflate truck tires from flat (the duty cycle will slow you down), if you don't own Milwaukee M12 batteries (the tool-only price plus a battery may exceed a comparable corded unit), or if you need UL database confirmation for fleet records · the certification is claimed in the operator manual but was not verifiable in the UL Product iQ database at time of authoring.

The Milwaukee 2475-20 carries a Prop 65 warning per the Amazon listing, consistent with the lithium-ion battery platform. The operator manual states UL Listing for US and Canada, though the corresponding database entry could not be confirmed in UL Product iQ at search time (access blocked). No CPSC recall was found for this model as of 2026-05-26. There is no chemical exposure pathway for this electronics product. For battery disposal, Milwaukee M12 batteries are removable and accepted at Call2Recycle drop-off locations (Home Depot, Best Buy, and municipal hazardous waste programs) · do not dispose of lithium-ion batteries in household trash.