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Why Do Cordless Vacuums Use a Lithium-Ion Battery?

Lithium-ion batteries have become increasingly common in consumer electronics. Many of the vacuums on our list of the best cordless vacuums come with a lithium-ion battery, and manufacturers often boast that their models include this battery type. But what makes a lithium-ion battery different to other types? How do they work? And what are the advantages? […]