Is this the same product as the Milwaukee M18 2848-20?

No. The Milwaukee M18 2848-20 was originally considered for this slot, but Milwaukee doesn't authorize Amazon as a retailer, so every Amazon listing for it is an unauthorized third-party seller. The Craftsman CMCE521B was substituted, a real, current cordless V20 inflator sold under Craftsman's own official Amazon listing.

Does it come with a battery?

No, the CMCE521B is bare-tool only. It requires a separately purchased Craftsman V20 battery and charger to operate.

CRAFTSMAN V20 Air Compressor Portable, Cordless Tire Inflator, Up To 150 PSI Tire Pump, with Digital Pressure Gauge, Tool Only (CMCE521B)

Product image from current catalog data

Best Value Cordless Tool-Battery Pick

CRAFTSMAN V20 Air Compressor Portable, Cordless Tire Inflator, Up To 150 PSI Tire Pump, with Digital Pressure Gauge, Tool Only (CMCE521B)

By CRAFTSMAN

9.1Excellent matchFeature and use-case score

This was swapped in for the Milwaukee M18 2848-20 in the original draft, because Amazon is not an authorized Milwaukee dealer and every Milwaukee listing there comes from unauthorized third-party resellers; the CMCE521B is a real, currently-sold cordless V20 inflator with its own official Amazon listing.

150 PSI max with a digital gauge specified at roughly plus-or-minus 2% accuracy
Runs on Craftsman's 20V MAX (V20) lithium-ion battery system, sold as a bare tool
21-foot hose reaches around a vehicle without repositioning it

See Price at the store →Price, delivery, and configuration can change at the retailer.

ByTopFiveFind Research Desk

How this was made: AI-assisted research and drafting organize the evidence. Exact product identity, source claims, owner-feedback patterns, conflicts, and publication checks are documented before indexing. No hands-on or human-expert testing is claimed unless a page explicitly shows that evidence. Read the full methodology.

Product overview

Craftsman CMCE521B V20 Cordless Inflator: What to Know

The CMCE521B tops out at 150 PSI and uses a digital gauge that Craftsman specifies at roughly plus-or-minus 2% accuracy, note that some retailer listings describe this as a flat plus-or-minus 2 PSI instead of a percentage, an inconsistency worth flagging since the two aren't the same at higher pressures. No independent, instrument-verified fill-time testing for this specific model was found in this research, and Craftsman's own materials don't publish a single fill-time claim either, so no speed number is repeated here the way it can be for the DeWalt or Fanttik.

It runs exclusively on Craftsman's 20V MAX (V20) lithium-ion battery system and is sold strictly as a bare tool, the battery and charger are not included and must be bought separately if you don't already own the V20 platform. That's the same trade-off as the DeWalt: cordless convenience in exchange for a real added cost if you're starting from zero.

The unit has auto shut-off at a preset pressure, onboard storage for its tapered nozzle, inflation needle, and Presta valve adapter, and a notably long 21-foot hose that Craftsman says lets you reach all four tires without repositioning the vehicle. It's backed by a 3-year limited warranty. Buyers should also note Craftsman sells a related but different model, the CMCE520B, which adds 120V AC and 12V DC modes on top of cordless, easy to confuse with the CMCE521B, which is cordless-only.