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How to handle lithium batteries in case of swelling?

April 5, 2026

Quick Answer

In case of lithium battery swelling, stop using the battery immediately, keep it away from heat sources, and ventilate the area. If the battery is sealed, it's best to discard it. Unsealed lithium batteries can be repurposed or reconditioned, but with caution.

Assessing the Swelling

When a lithium battery swells, it’s essential to assess the severity of the issue. Check for any signs of thermal runaway, such as excessive heat, smoke, or flames. If the battery is still sealed, inspect it for any cracks or damage. If the swelling is minor and the battery is unsealed, you can proceed with repurposing or reconditioning.

Repurposing or Reconditioning

To repurpose or recondition an unsealed lithium battery, follow these steps: first, disconnect the battery from any electrical connections; next, use a battery tester to check the state of charge and capacity; then, if possible, repurpose the battery for a non-critical application, such as a backup power source for a small appliance or a low-drain device. If the battery is beyond repair, consider recycling it through a reputable facility.

Proper Disposal and Safety Precautions

When disposing of a lithium battery that has swelled, follow strict safety protocols. Store the battery in a well-ventilated area, away from any heat sources or combustible materials. If the battery is sealed, consider it a fire hazard and discard it immediately. When handling lithium batteries, always wear protective gear, including gloves and safety glasses, and keep a fire extinguisher nearby.

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