To create straight or curved cuts through sheet metal, cordless shears move their pivoting blade against their fixed blade. They take longer to cut than nibblers, but the results are smoother edges and less mess. Shears are often used in mechanical, electrical, plumbing, HVAC, and automotive applications to cut panels and ducts. These cordless shears work in regions where there is no access to wired power and are powered by brand-specific batteries that can be used with many equipment from the same manufacturer. The voltage and series of the batteries must be compatible with the tool.