A cordless planer is a power tool used for smoothing and shaping wood surfaces. It operates using rechargeable batteries, allowing the user to work without the need for a power outlet or extension cord. Cordless planers work by using a rotating cutter head with multiple blades to remove small amounts of material from the surface of the wood. They may have adjustable depth settings, which allow the user to control the amount of material removed with each pass. They may also have adjustable fence plates, which help to guide the tool and ensure straight and even cuts.