Henry Abnormal Charging Temperature

Battery or charger becomes excessively hot during charging

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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.

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Possible Causes

Charging in hot environment, Blocked ventilation around charger, Failing battery cells, Faulty charger regulation

How to Fix / Troubleshooting

Safety first: If the battery or charger is too hot to touch comfortably, unplug the charger immediately. Do not cover the charger or battery while charging.

Step-by-step:

  • 1. Move to a cooler area: Charge the battery in a well‑ventilated room away from direct sunlight and heat sources.
  • 2. Ensure ventilation: Place the charger on a hard, flat surface with space around it for airflow.
  • 3. Monitor temperature: During the next charge, periodically check the battery and charger. Warm is normal; very hot is not.

If overheating recurs, stop using the charger and battery and contact an authorised Henry/Numatic service centre. Do not attempt to repair or open the charger or battery.

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Repair Difficulty

Medium 3/5

Required Part

Henry Cordless Battery Charger
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