MultiVolt offers the power of a corded circular saw, the freedom of a cordless platform and the choice to operate all MultiVolt tools including this circular saw with a battery or plug into an outlet. Metabo HPT batteries use 21700 cells, delivering 1,440+watts of power, similar to 120V-15amp corded power tools. This allows for greater power and approximately 46% more capacity. The battery delivers 4 Ah of runtime in the Metabo HPT 36 V platform and 8 Ah of runtime in the Metabo HPT 18V platform. Cordless or corded-you decide.