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Tool does not start or operate at full power

Tool does not start or operate at full power with fully charged battery

Milwaukee · M12 FUEL Drills

What does Tool does not start or operate at full power mean?

The power tool is not functioning as expected, even when a fully charged battery pack is inserted, indicating a potential issue with the tool's contacts or internal components.

Common Causes

  • Dirty or corroded battery pack contacts
  • Internal tool malfunction
  • Battery pack issue

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Remove the battery pack from the tool.

  2. 2

    Clean the contacts on the battery pack and inside the tool using a clean, dry cloth or cotton swab.

  3. 3

    Reinsert the battery pack firmly and try to operate the tool again.

  4. 4

    If the issue persists, return the tool, charger, and battery pack to a MILWAUKEE service facility for repair.

Browse all codes in this manual (8)
Verified technical data. Last updated: April 2026

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Source: Milwaukee M12 FUEL Drills
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