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       An e-bike battery burst into flames inside a townhouse in Northwest Washington on Thursday evening, causing a house fire that trapped a resident inside as smoke billowed.

       The incident marked the first time in the city that a person was injured by an e-bike-ignited fire, according to a spokesman from the D.C. fire department. In other cities, like New York, e-bike battery explosions and resulting fires have killed multiple people.

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       “They are popular means of transportation,” said Vito Maggiolo, the spokesman. “We want to see these used safely.”

       In a statement on X, the social media site formerly known as Twitter, the fire department published photographs of the lithium-ion batteries that caught fire Thursday — advising residents to store e-bikes, e-scooters and batteries away from exit doors and to strictly adhere to charging protocols.

       E-bike batteries are a fire risk. Here’s how to protect yourself.

       Fire officials were dispatched to the 700 block of Irving Street NW about 6:35 p.m. Thursday, and arrived to find heavy smoke emanating from a two-story townhouse and a man stuck behind a ground-floor door, Maggiolo said.

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       Firefighters forced their way into the building and extinguished the second-floor fire before it spread to the two adjacent homes, according to Maggiolo. They transported the man to a hospital in serious but stable condition.

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       A police report shows that one adjacent home sustained damage.

       Investigators found that a personal e-bike with a lithium-ion battery stored inside the home had started the fire. Maggiolo said that officials have not determined what caused the battery to ignite but that similar fires have been started by overcharging batteries or using incompatible chargers.

       The New York City fire commissioner has called lithium-ion batteries “uniquely dangerous.” As of Friday, according to a spokesperson for the fire commissioner, there had been 96 injuries and 14 deaths in New York stemming from lithium-ion battery fires this year.

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       In June, four people were killed by a fire at an e-bike shop on Manhattan’s Lower East Side. Last year, an 8-year-old girl was killed when an e-scooter’s lithium-ion battery exploded in a couple’s living room in Queens. The city has banned the sale of e-bikes and similar devices that do not meet safety standards.

       Maggiolo said the District is less vulnerable to lithium-ion battery fires than a city like New York, where more people use e-bikes and a higher density of residents creates more charging risks.

       Lithium-ion batteries are used for nearly all rechargeable devices, including smartphones, laptops and electric toothbrushes. Safety experts have described their fire risk as small but real and have advised people to purchase products certified as having met safety and testing standards.

       Experts have also said it’s generally safe to rent electric bikes and scooters from well-known companies like Lime, which has bikes all over the District. In a statement Friday, a spokesperson for Lime said its batteries were designed to deter fires and were certified to be in compliance with U.S. and E.U. lithium-ion battery requirements.

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