The designation CR2025 refers to a specific type of lithium coin cell battery that is commonly used in various electronic devices. This battery is characterized by its dimensions, measuring 20 millimeters in diameter and 2.5 millimeters in thickness. Known for its reliability and long shelf life, the CR2025 is often found in gadgets such as watches, calculators, key fobs, and medical devices. Its chemistry allows for a stable voltage output, making it an ideal choice for devices that require a consistent power source over an extended period. The CR2025 is part of a broader family of coin cells, each with different specifications, but it stands out for its balance of size and capacity, providing a practical solution for powering compact electronics.