Charge into Fire Safety! For the safe charging of power and lawn tool batteries, follow manufacturer's instructions and use the correct charger. Proper charging location and monitoring are also essential to prevent fire hazards, especially with lithium-ion batteries.
• Always use the specified charger. Never use a “knock-off” or unapproved charger, as it can overheat and cause a fire. For lithium-ion batteries, using the wrong charger risks fire or permanent battery damage.
• Charge on a hard, non-flammable surface. Charge batteries on a flat, dry, concrete or tile floor, away from anything that can catch fire.
• Keep charging areas ventilated. Good airflow prevents heat from building up and dissipates any flammable gases that may be released, particularly with lead-acid batteries.
• Disconnect when charging is complete. Unplug the charger and remove the battery once it is fully charged. Modern "smart" chargers will stop on their own, but removing the battery is the safest practice.
• Never charge unattended. Do not charge batteries overnight or when you are away from home. If a problem arises, you need to be able to address it immediately.
• Inspect batteries for damage. Before charging, check for swelling, cracks, leaks, or overheating. Do not charge a damaged battery; dispose of it properly.
• Charge at the right temperature. Avoid charging batteries in extreme cold or heat. Room temperature is ideal. For lithium-ion batteries, exposure to high temperatures can accelerate degradation and pose a safety risk.