Milwaukee Intermittent Battery Connection

Vacuum will not turn on unless the battery is held or wiggled in a certain position.

Advertisements

Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Advertisements

Possible Causes

Worn or compressed battery contacts in tool, Loose battery rail or latch, Debris in battery slot, Damaged battery terminals

How to Fix / Troubleshooting

Safety first: Remove the battery before attempting to adjust contacts.

  • 1. Clean battery slot: Use compressed air or a soft brush to remove dust and debris from the battery rails and contacts.
  • 2. Inspect contacts: Look for bent, recessed, or burned contacts inside the vacuum’s battery interface. Contacts should be springy and protrude evenly.
  • 3. Gently adjust contacts: Using a non-conductive tool, carefully lift any flattened contacts slightly to improve pressure on the battery terminals.
  • 4. Check battery latches: Ensure the battery clicks firmly into place. If the latch is worn or cracked, replace the battery housing or latch mechanism.
  • 5. Test with multiple batteries: If the issue occurs with all packs, the tool’s contact assembly is at fault and should be replaced.
Advertisements

Repair Difficulty

Medium 3/5

Required Part

Battery Contact Assembly
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements