A lithium battery is an energy storage device that uses lithium-based chemistry to provide high energy density and rechargeable power. In the UAE, lithium battery systems are used in electronics, renewable energy storage, electric mobility, and backup power applications. They are valued for low self-discharge, longer cycle life, and lightweight construction. Performance is influenced by temperature management, charging protocols, and safety controls, especially in hot climates. Proper installation, ventilation, and monitoring help reduce risks such as overheating. Regulations, recycling practices, and transport guidelines govern handling and disposal to support safety, efficiency, and environmental responsibility across residential, commercial, and industrial uses.