E17
Nilfisk Battery Temperature Protection During Charging

LED display shows a thermometer icon over a battery icon; charging stops prematurely.

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Possible Causes

Battery pack too hot or too cold, Faulty temperature sensor inside the battery, Charger thermal protection triggered, Blocked ventilation around the charger

How to Fix / Troubleshooting

Safety: Place the charger and battery on a hard, non-flammable surface away from heat sources.

  • Normalize the temperature: If the battery was just used heavily, let it cool for 30–60 minutes before charging. If stored in a cold area, allow it to warm to room temperature.
  • Ensure proper ventilation: Do not cover the charger or battery while charging. Keep away from direct sunlight or radiators.
  • Retry charging: Once at room temperature, reconnect the charger and monitor the LED status.
  • If the temperature error persists: The internal temperature sensor or BMS may be faulty. Replace the battery pack.
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Repair Difficulty

Easy 2/5

Required Part

Nilfisk Lithium-Ion Battery Pack
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