The Duracell brand has its origins in the partnership of a scientist and a businessman who joined forces in the 1920s to produce mercury batteries for military equipment; the company continued to produce various mercury batteries for decades. With Kodak’s launch of cameras with a flash in the 1950s, the AAA battery was developed and the market for batteries designed specifically for consumer use expanded rapidly. Introduced in 1964, the Duracell brand name was inspired by the concept of a “durable cell” battery. Today the company is part of the Berkshire Hathaway family of brands. Count on the coppertop for reliability in even the most extreme conditions; the batteries may be used to power toys, juvenile products, cameras, flashlights, clocks, smoke alarms, portable radios, remote controls, safety gear and more. Products include AA batteries, AAA batteries, D batteries, 9V batteries and C batteries.