A primary battery, also known as a non-rechargeable battery, is a type of battery that is designed for single-use. Once the chemical reactions that generate electricity within the battery are exhausted, it cannot be recharged or reused. Primary batteries are commonly used in devices with low power consumption or where replacing the battery is more practical than recharging it. Examples include alkaline batteries used in remote controls, flashlights, and disposable lithium batteries in cameras. Primary batteries are valued for their convenience, long shelf life, and reliability.