BAT-HOT
Hilti Battery Overtemperature Protection

Battery temperature icon appears; vacuum will not run until cooled

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Possible Causes

Continuous high-load operation, High ambient temperature, Blocked cooling vents around battery, Aged battery with higher internal resistance

How to Fix / Troubleshooting

Safety first: Do not attempt to cool the battery rapidly with water or refrigeration.

  • Allow to cool: Remove the battery and place it in a cool, dry area away from direct sunlight until it reaches room temperature.
  • Check vents: Ensure that the vacuum’s battery compartment and surrounding vents are not blocked by dust or debris.
  • Use appropriate duty cycle: Avoid running the vacuum continuously at maximum power for extended periods. Allow short rest intervals.
  • Replace aged batteries: If overheating occurs frequently with normal use, the battery may be near end-of-life and should be replaced.
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Repair Difficulty

Very Easy 1/5

Required Part

Hilti 22V Battery Pack
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