Lithium-ion batteries are in most consumer electronics, from power banks and smartphones to active mobility devices. Although fires arising from the use of these batteries are not commonplace, experts warned that people should take precautions when using them. Rushing out of the house on Jun 22 at about 2.30pm, 19-year-old Sophie did not think twice about leaving her portable power bank charging on her bed. The power bank – a door gift from a school reunion party in 2022 – had been working well