Cordless jigsaw with tool-less blade change for rapid blade removal/replacement and a built in job light for use in low visibility applications the Makita BJV180RFE uses 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 and they also maintain their charge noticeably longer which provides increased productivity.