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In-depth review

Milwaukee M18 Inflator (2848-20) Review (2027)

In-depth review of the Milwaukee M18 Inflator 2848-20: TrueFill automatic pressure checking, 150 PSI output and truck tire duty on the 18V platform.

TGBy TrueGear Research TeamIndependent editorial teamLast updated How we researchResearch-based assessment · Tire Inflators
Specs verified against manufacturer docs
No paid placements
Independently funded by readers
Updated 2026-10-28
Milwaukee M18 Inflator (2848-20) Review (2027) featured graphic
Milwaukee M18 Inflator (2848-20)

Milwaukee M18 Inflator (2848-20)

Milwaukee's 18V inflator with TrueFill automatic pressure checking, 150 PSI on tap, and a 36-inch hose built for truck tires.

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Our verdict

The 2848-20 is the inflator for people who air tires as a routine, not an emergency: TrueFill checks the pressure and stops at the target on its own, the output handles 33-inch light truck tires at a working pace, and the 36-inch hose reaches the valves other cordless units make you kneel for. On-platform owners get the most complete cordless inflator here; everyone else must price in a battery.

What we like

  • TrueFill technology checks the actual tire pressure automatically and stops at the target, limiting overfill
  • 150 PSI maximum with an output Milwaukee rates to top off a 33-inch light truck tire in under a minute
  • Four PSI memory slots store the pressures for the vehicles and trailers you run most
  • 36-inch hose and an all-brass Schrader chuck reach awkward truck and dually valves, with Presta chuck, needle and nozzle included

What to watch out for

  • Tool only: M18 battery and charger are separate if you are new to the platform
  • At 7.7 lb it is a toolbox or truck-bed unit, not a glovebox inflator
  • Optimized for passenger, light truck and medium-duty tires rather than high-volume commercial work

What owners report: Milwaukee M18 Inflator (2848-20)

Synthesized from recurring themes in long-term owner feedback.

Most praised

  • TrueFill's automatic check and stop makes four-tire sessions a set-and-wait job instead of gauge babysitting
  • Truck owners praise the long hose and brass chuck for reaching rear dually and trailer valves
  • The memory presets suit households juggling a truck, a trailer and a daily driver at different pressures

Common complaints

  • The bare-tool price stings for drivers who do not already own M18 batteries
  • It is heavier than the compact inflators car owners toss in a glovebox
  • High-volume fills on big tires still take patience compared with a shop compressor

Who it is for

Milwaukee M18 owners with trucks, trailers, or several vehicles who top off tires regularly and value automatic pressure accuracy.

TrueFill changes the routine

Most inflators fill to a preset and trust the number. TrueFill goes further, automatically checking the tire's actual pressure as it works and shutting off at the target, which removes the overshoot-and-bleed loop from a four-tire session. Four memory slots hold the pressures for the truck, the trailer and the family car, so the routine becomes connect, confirm, walk to the next wheel.

Output and reach

Milwaukee rates the 2848-20 to top off a 33-inch light truck tire in under a minute, backed by a 150 PSI ceiling for load-range pressures. The 36-inch hose is the unglamorous spec that matters on real trucks, reaching rear valves without dragging the unit, and the all-brass Schrader chuck threads on securely instead of clipping and leaking.

Kit, weight and honest costs

The box adds a Presta chuck, an inflation needle and a nozzle, covering bikes and balls without a parts hunt. At 7.7 lb it rides in a truck bed box or garage shelf rather than a glovebox, and as a bare tool its real price includes an M18 battery and charger for anyone not already on the platform.

Key specifications

Model
2848-20 (tool only)
Power
18V M18 battery
Max pressure
150 PSI
Hose
36 in
Features
TrueFill auto pressure check, auto shut-off, 4 PSI memory presets
Weight
7.7 lb

Also consider

Milwaukee M12 Compact Inflator

Milwaukee M12 Compact Inflator

120 PSI from the M12 platform with auto shut-off.

Why consider it: The smaller Milwaukee option for M12 owners who top off car tires and value toolbox size over truck pace.

  • Max pressure: 120 PSI
  • Battery: M12 REDLITHIUM (sold separately)
Check priceAdd to cart
DeWalt 20V MAX Inflator DCC020IB

DeWalt 20V MAX Inflator DCC020IB

Three power sources, one go-anywhere inflator.

Why consider it: The DeWalt platform rival with triple power sources, including a 12V vehicle fallback the Milwaukee lacks.

  • Power sources: 20V MAX battery, 12V DC, 110V AC
  • Gauge: Digital with auto-shutoff
Check priceAdd to cart

Research-based assessment. TrueGear has not hands-on tested this product; this evaluation synthesizes manufacturer specifications, retailer documentation, and published expert reviews.

Questions, answered

Does it come with a battery?

No, the 2848-20 is a bare tool. It runs on any Milwaukee M18 battery; larger capacity packs suit four-tire truck sessions best.

What is TrueFill?

Milwaukee's automatic pressure system: the inflator checks the tire's real pressure during the fill and stops at the set target, reducing the overfill and bleed-back routine of preset-only inflators.

Can it handle trailer and dually valves?

The 36-inch hose and threaded brass chuck are made for exactly that reach. It is optimized for passenger, light truck and medium-duty tires rather than commercial high-volume work.

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