CodeRegistry
Brands
  1. Home
  2. Milwaukee
  3. M12 FUEL Drills
  4. 1 light flashes 4 times
About·Privacy·Terms

CodeRegistry — Your global library for technical solutions.

For your safety: always follow the equipment manufacturer’s official manuals. CodeRegistry is an independent help site and is not affiliated with the brands listed here.

1 light flashes 4 times

1 fuel gauge light flashes 4 times - Battery low charge

Milwaukee · M12 FUEL Drills

What does 1 light flashes 4 times mean?

The fuel gauge on the tool indicates that the battery pack has less than 10% of its charge remaining. The tool is still operational but will soon need recharging.

Common Causes

  • The battery has been used extensively and is nearing full discharge.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Stop using the tool immediately to avoid complete discharge.

  2. 2

    Remove the battery pack from the tool.

  3. 3

    Place the battery pack into the Milwaukee charger specified for your battery.

  4. 4

    Allow the battery to charge fully until the charger indicates it is complete.

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

Related Faults

1 light flashes 8 times1 fuel gauge light flashes 8 times - Battery completely dischargedDamaged cordDamaged or entangled cord - Risk of electric shockFuel gauge lights flashFuel gauge lights flash - Battery too hot
Source: Milwaukee M12 FUEL Drills
Open Manual (Page 4)Search more codes in this manual