Makita, a pioneer in Brushless Motor technology and battery innovation, combines both in the 18V LXT Lithium-Ion Brushless Recipro Saw (tool only). It has an electronically-controlled BL Brushless Motor that matches torque and RPM to the application, and is powered by the industrys fastest charging 18V Lithium-Ion batteries (sold separately). With Makita, users can remain in one battery platform, using the same fast-charging 18V batteries on the XRJ05Z as they use across the Makita 18V LXT cordless tool line-up. The XRJ05Z is equipped with efficiency features for faster cutting. The long 1-1/4 in. stroke length increases cutting efficiency, and the refined crank mechanism design minimizes blade deflection and reduces vibration. Convenience features include an L.E.D. light to illuminate the line of cut, a retractable tool hook, and tool-less blade change for faster blade installation and removal. Its part of Makita's expanding 18V Lithium-Ion series, the worlds largest cordless tool line-up powered by an 18V Lithium-Ion slide-style battery. Makita 18V Lithium-Ion batteries have the fastest charge times in their categories, so they spend more time working and less time sitting on the charger. For improved tool performance and extended battery life, Makita created STAR Protection computer controls. STAR Protection is communication technology that allows the star Protection-equipped tool and battery to exchange data in real time and monitor conditions during use to protect against overloading, over-discharging and overheating. For increased versatility, the tool can also be powered by Makita 18V LXT and compact Lithium-Ion batteries with the star symbol on the battery indicating STAR Protection inside.