Pyramid Duration-L 3.6V Lithium Battery, C-Size, 5/pk

3-5 years battery life. The 42224 Duration-L 3.6Volt Lithium C-Size battery is ideal for wall clocks, memory backup, security equipment and small electronics. Lasts longer than standard alkaline batteries. Withstands extreme temperature ranges from -67 to 185 degrees Fahrenheit. 33% lighter than alkaline batteries. Use with all Pyramid TimeTrax Sync™ battery-operated analog and digital wall clocks. 5/pk. For wall clocks, memory backup, security equipment and small electronics 3.6Volt C-Size 3-5 years battery life Superior drain capability Withstands extreme temperature range from -67° to 185° F (-55° to 85°c) 33% lighter than alkaline batteries 5/pk Not rechargeable