The Panasonic CR2025 is a lithium manganese dioxide coin cell battery designed to provide a steady 3 V power supply for a wide variety of small electronic devices. With a nominal capacity of 220 mAh, these cells are built to maintain a reliable energy flow, making them suitable for everything from car key fobs and calculators to remote controls and medical devices. They operate effectively across a broad temperature range from -30 to 85 °C, ensuring your electronics remain functional even in extreme cold or heat. Measuring 20.0 mm in diameter and 2.5 mm in height, each cell weighs approximately 2.3 g, allowing them to fit into tight spaces without adding bulk. These batteries are manufactured without added mercury and meet IEC 60086-4 and UL 1642 safety certifications. This pack contains four batteries in a blister pack that includes child safety warnings to help you store them securely at home.