Lithium batteries are generally safe and unlikely to fail when designed, manufactured, and used properly. When lithium batteries fail to operate safely or are damaged, they may present a fire and/or explosion hazard. Damage from improper use, storage, or charging may also cause lithium batteries to fail.
Tips to ensure safety include:
- Inspect batteries and devices for signs of damage before use.
- Immediately remove batteries from the device, and from service if bulging/cracking, hissing, leaking, increasing temperature, or smoking is observed.
- Only use batteries, chargers, and associated equipment that are designed and approved for use with the specific device. When applicable, ensure equipment and batteries have been tested and certified by Underwriters Laboratories (UL) or a Nationally Recognized Testing Laboratory (NRTL).
- Follow manufacturer’s instructions for use, maintenance, and storage.
- Follow manufacturer’s instructions for charging—some batteries will overcharge if connected to a charger that does not turn off when the battery is fully charged.
- Protect batteries from physical impacts such as dropping, crushing, and puncturing.
- Store batteries in a cool dry environment between 50°F and 77°F. Do not store in areas exposed to direct sunlight or inside a vehicle in hot weather.
Additionally, it is wise to regularly check for recalls and remove recalled or damaged batteries from service. Disposal or recycling of lithium batteries should be performed in accordance with federal regulations; do not dispose of in the trash or general recycling bins.