What's The Difference Between Alkaline And Lithium-Ion Batteries?

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Alkaline, disposable lithium, and Li-ion batteries each serve a different purpose.

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Alkaline and lithium-ion batteries differ significantly, but for most people, the biggest difference lies in their applications. Alkaline batteries include the familiar AA, AAA, C, D, and 9-volt cells found in everyday devices like TV remotes and flashlights. They're relatively inexpensive and abundantly available for gadgets that draw power slowly.

Lithium-ion (Li-ion) is a rechargeable battery typically used in smartphones, laptops, cameras, game controllers, or as detachable batteries for portable power tools. Li-ion stores more energy for its size and delivers substantial power repeatedly, though it usually requires a charging circuit specific to the battery pack.

There's an important distinction worth highlighting when comparing these two battery types: a disposable "lithium AA" is typically an alternative or a 1.5-volt replacement for an alkaline AA and shouldn't...

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