Portable Lithium-Ion Battery Damage and Charging Control
A Damaged Battery Does Not Belong on the Charger
A cordless tool may still run after its battery has been dropped or damaged. That does not prove the pack is safe to recharge. Lithium-ion battery failure can release heat, fire and hazardous smoke; the charging decision starts with the pack's condition, not the charger light.
Controls to confirm
- Check before use or charging: look for damage, swelling, leaks or unusual heat. Remove a suspect pack from service and report it. Do not open, puncture or attempt to repair the battery casing.
- Match the equipment and location: use the battery and charger approved for the device and follow the manufacturer's temperature, charging and storage instructions. Keep the charging area clear of combustibles and escape routes; do not cover the charger or pack.
- Prepare for failure: know the site's battery incident procedure. If a pack hisses, vents, smokes or becomes unusually hot, keep clear, warn others and raise the alarm. Do not carry a failing pack through the workplace; let trained responders manage it.
Today’s action
Check one charging station and its packs. Confirm charger compatibility, clear surroundings and the process for taking a suspect battery out of service.
Source guidance
Authoritative guidance checked 5 November 2026. Apply the legal requirements and approved procedures for your location.
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