Batteries are devices that convert chemical energy into electrical energy using chemical reactions, broadly categorized into primary batteries (disposable) and secondary batteries (rechargeable). In the manufacturing industry, their importance is growing as a core component for a wide range of products, including electric vehicles (EVs), stationary energy storage systems, industrial robots, and IoT devices. Related technologies and services include the development of battery materials such as cathode materials, anode materials, and electrolytes; cell design and manufacturing for lithium-ion batteries and all-solid-state batteries; battery pack design and assembly, including Battery Management Systems (BMS); testing services to evaluate safety and performance; and recycling and reuse technologies for used batteries. This field constantly demands higher performance, longer lifespan, improved safety, and reduced environmental impact.