Milwaukee M18 FUEL 15mm Random Orbital Polisher (2684-20)

No. This is the bare tool (model 2684-20) — no M18 battery or charger is included. It requires any M18 REDLITHIUM battery. Milwaukee rates battery runtime at up to 53 minutes of polishing or approximately 20 minutes of heavy correction with a 6.0 Ah high-output battery. If you already own other M18 tools, your existing batteries work here. New-to-M18 buyers should factor in the battery and charger cost when comparing total price against competitors that include battery kits.

It is a random-orbital DA (dual-action) polisher, not a rotary. The backing plate orbits around its center while also rotating on an offset axis, producing a random scratch pattern that resists burning through paint. DA polishers are more forgiving for beginners — an uneven dwell on a rotary can damage paint; the same mistake on a DA polishes out. The 15mm orbit throw makes this a genuine correction machine, not a finishing-only DA.

Yes. cULus certification is confirmed in the official Milwaukee operator manual (document 58-14-0258d3.pdf), which shows 'C US UL Listing for Canada and U.S.' in the SYMBOLOGY section for both model 2684-20 (15mm) and 2685-20 (21mm). The UL Product iQ online database returned a blocked response on 2026-05-18, but the manufacturer declaration in the regulated operator document is the primary evidence.

The tool ships with a 5-inch hook-and-loop backing plate and is compatible with optional 6-inch plates. The spindle uses a standard M14 thread, which means most third-party backing plates fit without adapters. Standard 5" pads from Griot's, Lake Country, Koch-Chemie, and Meguiar's are confirmed compatible via community reviews.

The bare tool weighs 5.16 lb (2.34 kg). With a typical 6.0 Ah M18 battery, operating weight is approximately 6 lb (2.7 kg). This is slightly above average for a cordless DA polisher. Community reviewers note low vibration, and the lock-on switch and ergonomic housing reduce fatigue, but one reviewer notes that extended sessions may produce slightly more fatigue than lighter alternatives. The weight is a known trade-off for the M18 platform's power and battery runtime.