Safety Issues for Safety Issues for Lithium-Ion Batteries Safety Issues for Lithium-Ion Batteries Lithium-ion batteries are widely used as a power source in portable electrical and electronic products. While the rate of failures associated with their use is smal , several wel - publicized incidents related to lithium-ion batteries in actual use (including fires and explosions) have raised concerns about their overall safety. Test standards are in place that mandate a number of individual tests designed to assess specific safety risks associated with the use of lithium-ion batteries. However, Underwriters Laboratories and other standards development organizations are continuing to revise and update existing lithium battery standards to reflect new knowledge regarding lithium-ion battery failures in the field. These organizations are contributing to battery safety research with a focus on internal short circuit failures in lithium-ion batteries. The research is directed toward improving safety standards for lithium-ion batteries.