But as the number of e-bikes have grown — now an estimated 65,000 zipping from eateries to doorsteps — so has the frequency of fires and deaths blamed on exploding lithium-ion batteries.

Lithium-ion battery cell explosions are typically caused by a thermal runaway, a chemical reaction that can cause the cell to ignite and explode, according to the NTSB.

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Modern lithium-ion batteries are composed of multiple cells, and within each of them are cathodes and anodes. If a battery is physically damaged or over-charged, the barrier between these halves ...

Federal officials are considering a crackdown on defective lithium-ion batteries that power hoverboards, scooters and motorized bicycles because of a rash of deadly fires caused by exploding ...

NEW YORK (AP) — The explosion early on a June morning ignited a blaze that engulfed a New York City shop filled with motorized bicycles and their volatile lithium-ion batteries.