Did you know that it's illegal to purchase certain types of Li-ion cells? Most Li-ion cells we use in our everyday life are industrial batteries known as 18650 batteries (which mean they are 18mm in diameter and 65mm in length).
Although they are for industrial use, people often use and keep them like they do with alkaline batteries because they look similar.
However, selling Li-ion cells to the general public is prohibited as they can cause fires and explosions.
Let’s take a look at why and how Li-ion cells could be dangerous.
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