Cordless jigsaw with tool less blade change for rapid blade removalreplacement 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