Battery Undertemperature (External Sensor)

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The external temperature sensor reports that the battery temperature is too low. Charging certain battery chemistries (e.g., Li-ion) at very low temperatures can cause irreversible damage, such as lithium plating, affecting performance and lifespan.

• Very low ambient temperature around the battery, causing its internal temperature to drop below safe charging limits.
• The battery is stored or operated in a cold environment without adequate heating provisions.
• Inaccurate reading from the external temperature sensor due to poor contact or malfunction.

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1. 1

   Verify the ambient temperature surrounding the battery.

2. 2

   Move the battery to a warmer environment or provide supplemental heating to bring its temperature within the recommended charging range specified by the battery manufacturer.

3. 3

   Ensure the external temperature sensor is properly attached to the battery surface and functioning correctly.