Battery technologies refer to the various methods and materials used to store and release electrical energy. Common types include lithium-ion, nickel-metal hydride, and lead-acid batteries. Each type has unique characteristics, such as energy density, lifespan, and charging speed, making them suitable for different applications, from smartphones to electric vehicles. Recent advancements in battery technologies focus on improving efficiency and sustainability. Innovations like solid-state batteries promise higher energy capacity and safety, while recycling techniques aim to reduce environmental impact. As demand for energy storage grows, ongoing research continues to enhance performance and reduce costs across the industry.