Power your essential devices with these dependable alkaline batteries Alkaline batteries deliver reliable power for everyday use. High-density core produces ample power to keep your devices ready for use. Enhanced power check lets you easily see how much power is available with the touch of a button. Date coded and mercury free. Batteries last up to 10 years in storage. Duracell(R) Quantum Alkaline C Batteries, Pack Of 5 is one of many C & D Alkaline Batteries available through Office Depot. Made by Duracell.