coin button cell batteries
Coin button cell batteries represent a crucial power source in modern electronics, characterized by their compact, disc-shaped design and reliable performance. These small yet powerful batteries typically range from 5 to 25 millimeters in diameter and are constructed using various chemistry types, including lithium, silver oxide, and alkaline. Their distinctive flat and round shape makes them ideal for powering small electronic devices where space is at a premium. The batteries feature a two-layer design with positive and negative electrodes separated by an electrolyte, all encased in a durable metal housing. They deliver consistent voltage output throughout their lifespan, typically ranging from 1.5 to 3 volts, depending on the chemical composition. These versatile power sources find widespread application in watches, calculators, medical devices, car key fobs, fitness trackers, and various small electronic devices. Their long shelf life, typically 5-10 years, ensures reliability for both frequent and occasional use applications. The sealed construction prevents leakage and ensures safe operation in various environmental conditions, while their standardized sizes (CR2032, CR2025, etc.) ensure compatibility across different devices and manufacturers.