The Brattleboro Fire Department is issuing a warning regarding lithium-ion batteries in the wake of an accidental fire that occurred in an e-bike repair shop in New York City on June 20. The fire, which killed four and left left two in critical condition, was caused by lithium-ion batteries igniting on the first floor of a six-story building. In addition to powering e-bikes and e-scooters, lithium-ion batteries are found in common household items, such as smartphones, laptops, vape pens, and power tools. According to the National Fire Protection Association (NFPA), when lithium-ion batteries are damaged, defective, or used incorrectly, they have