Panasonic CR2025 3 Volt Lithium Coin Battery (4 Packs of 5);

Panasonic Blister Package. Panasonic 3 Volt Lithium coin batteries are used in a wide variety of applications, including personal watches, clocks, electronic organizers, PDA's, portable electronics, keyless door entry remotes, cell phones, computer motherboards, heart monitors, backup power sources for IC memories, and more. Lithium 3V provide 2x the nominal voltage compared to other chemistry makeup of batteries such as Silver Oxide and Alkaline button cells.