Lithium-ion cordless circular saw is lightweight & compact provides an easy to trace cutting line with the LED job light & built-in blow-off nozzle & using Lithium-ion battery technology which has a number of advantages the batteries have no memory effect which allows them to be recharged before they are completely discharged; they are up to 40% lighter than a Ni-Cad or Ni-MH battery & maintain their charge longer which provides increased productivity.