Energizer A76 / LR44 Batteries provide long lasting, reliable power to your important gadgets. These mini batteries are compatible with a variety of devices, including your keyless entry system, heart rate monitors and glucose monitors. Choose these small batteries when you need replacement calculator batteries or batteries for watches, toys or games. Similar in size to silver oxide batteries, these miniature alkaline button batteries contain zero mercury and reduce environmental impact. Count on Energizer, the #1 brand of specialty batteries, to deliver dependable, long lasting power to your devices.