Fronius · Perfect Charging
The battery is experiencing an uncontrolled self-heating process, characteristic of thermal runaway. This is an extremely dangerous condition that can escalate rapidly, leading to smoke, fire, or explosion if not immediately contained.
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IMMEDIATELY isolate the battery and charger from all connections if it can be done safely without risk to personnel.
Follow all established safety protocols for handling thermal runaway incidents, which may include evacuation of the area and activation of appropriate fire suppression systems.
Do not attempt to re-use the battery or charger without a thorough inspection and certification by a qualified professional to ensure safety.