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Corded vs Cordless Mag Drill: Power, Kits and Jobsite Fit

By John Morris · Updated 2026-09-07 · Research methodology

A cordless mag drill can solve difficult power access, while a corded model can make sense where appropriate electrical service is already available. The right comparison includes the battery kit, charging plan and magnetic-base design. Cordless and permanent-magnet are separate specifications, so check both rather than making an assumption.

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Map the real power problem

List where the machine will work, how often it moves and what suitable power is actually available. A shop station beside the correct supply is a different purchase from several separated work locations. Compare the full day rather than a single hole: setup, repositioning, drilling, battery changes and transport all belong in the decision.

Do not choose extension-cord length, generator size or battery substitutions from a generic shopping guide. Use the exact model documentation and qualified site planning. A tool that matches the job on paper still needs a suitable power arrangement.

Check the magnet independently

Milwaukee states that its 2787-22 uses permanent magnets that do not depend on battery power to remain engaged. The same product page describes a motor stop feature responding to excessive rotational movement. These are specific product features, not a promise about every battery-powered drill or a substitute for its required restraint and setup.

Ask what happens when motor power is interrupted, how the base is engaged and what attachment conditions the manual requires. Avoid choosing from a single advertised holding-force number without the associated workpiece requirements.

Inspect the exact Amazon offer

Check model, regional version, included accessories and current seller details before ordering.

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Compare kits at the same starting point

A bare tool price is not directly comparable with a kit containing batteries and a charger. If you already own batteries, confirm the approved type and condition instead of assuming that sharing a brand name is sufficient. If purchasing a new platform, include the batteries needed for the planned workflow, charging access and replacement cost.

Treat holes-per-charge claims as specified test results. Cutter diameter, material, thickness and battery configuration need to match before that figure becomes a useful planning reference. For a deadline-sensitive job, request a representative demonstration or build contingency into the schedule.

  • Record the exact kit number, not only the machine family.
  • Check included cutter holders, pins, case and lubricant equipment.
  • Budget a charging and transport plan alongside the machine.

When each choice deserves the shortlist

Shortlist corded equipment when suitable power is convenient and you value a straightforward shop arrangement. Shortlist cordless equipment when avoiding power setup offers a concrete operational benefit. For occasional work, compare rental access before committing to either system. The better purchase is the one that completes your actual jobs within the documented limits at an acceptable total cost.

Questions, answered

Does every cordless mag drill use a permanent magnet?

Do not assume so. Verify the exact model specification and manual.

How many batteries do I need?

That depends on the job and the approved battery configuration. Use manufacturer test conditions as a reference, then account for your workload and charging access.

Sources & further reading

Specification-based guidance; no hands-on performance testing is claimed.

Products to inspect before buying

As an Amazon Associate I earn from qualifying purchases. Links marked “Check Amazon” are affiliate links.

Milwaukee M18 FUEL 2787Model guide available

Milwaukee M18 FUEL 2787

a cordless 1-1/2-inch drill whose purchase economics depend heavily on the batteries and charger already in your workshop

Annular diameter
1.5″ maximum
Cutting depth
Confirm manual

The 2787 and lineman-oriented 2788 are separate configurations. Kit suffixes such as -22 and -22HD also matter for included batteries and charger. A listing that merely says M18 mag drill is not enough information to establish what will arrive.

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DEWALT DWE1622KModel guide available

DEWALT DWE1622K

a corded two-speed option for buyers who need a 2-inch annular capacity without maintaining a battery fleet

Annular diameter
2″ maximum
Cutting depth
2″ maximum

A 2-inch annular cutter rating does not mean this drill accepts a 2-inch twist drill. It also does not turn the two fixed spindle speeds into variable speed. Do not copy specifications from DWE1622K-QS or other regional versions into a US purchase.

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