Duracell multi-purpose alkaline batteries are ideal for reliably powering everyday devices that require a kick of additional power. Duracell alkaline batteries are available in size aa, aaa, c, d and 9v. Duralock technology keeps unused duracell batteries fresh and powered up to 10 years in ambient storage. These batteries give you the freedom to enjoy the use of your appliances by giving you a product you can rely on. Superior nylon top closure helps preventing our batteries from leakage. Lasts up to 50 percent longer vs. Ordinary carbon zinc aa batteries in 2015 iec tests. Results may vary by device and usage pattern. Aa size batteries. Also known as mn-1500, mn1500.