Deadly blaze in South Korea factory revives concerns over battery safety

A deadly factory fire in South Korea which killed 23 workers has revived concerns over battery safety in the country. Experts say the incident could sour sentiment in the industry. The nation is a key global supplier of lithium-ion cells, used in everything from electric vehicles to energy storage systems. Three of its companies - namely LG Energy, SK On and Samsung - are among the world's top-tier suppliers. Debate has been fierce over the safety of batteries in vehicles and giant power storage centres.