Lithium-Ion Battery

Last updated: 4 April 2026

Lithium-Ion Battery: A rechargeable battery used in devices like smartphones, laptops, electric vehicles (EVs), and power tools that can pose fire hazards if damaged or improperly disposed of.

Last reviewed by Marcus Williams on 23 March 2026

A lithium-ion (Li-ion) battery stores energy through the movement of lithium ions between two electrodes. These batteries are prized for their high energy density, meaning they pack a lot of punch into a small package. They're also lightweight and can be recharged hundreds to thousands of times before losing significant capacity. However, these benefits come with risks. When damaged or improperly handled-like overheating, overcharging, or getting crushed-they can ignite, causing fires that are difficult to extinguish and potentially releasing toxic chemicals.

For example, in 2017, Samsung issued a recall for its Galaxy Note 7 smartphone due to batteries overheating and catching fire, leading to reports of damage and injuries. Such incidents highlight the importance of proper disposal and recycling practices to prevent these risks. Businesses and consumers must ensure that used Li-ion batteries are recycled safely rather than thrown in regular trash or landfills.

According to the World Economic Forum, e-waste is the fastest-growing waste stream globally.

When disposing of lithium-ion batteries, it's important to contact certified recyclers who can handle them safely without harming the environment. This process not only prevents potential fires but also recovers valuable materials like cobalt, nickel, and lithium from old devices. For more information on e-waste management, look into terms such as "battery recycling" and "electronic waste."

According to the Environmental Protection Agency (EPA), in 2019, over 547 million lithium-ion batteries were sold in the U.S., highlighting the urgent need for responsible disposal practices.

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