A cordless screwdriver is a portable power tool designed for driving screws without the need for a power outlet. It operates on a rechargeable battery, making it convenient for both indoor and outdoor tasks. These tools typically feature adjustable torque settings, allowing users to control the amount of force applied when driving screws, which helps prevent damage to materials. Cordless screwdrivers come in various sizes and designs, often including a built-in LED light for visibility in dark areas. They are ideal for assembling furniture, hanging pictures, or performing minor repairs, making them a popular choice for both DIY enthusiasts and professionals.