The Makita 18V LXT? Lithium-Ion Cordless 6-1/2? Circular Saw delivers cordless cutting power to the job site. The XSS02Z (tool only) has a Makita-built high-torque motor and a compact design for a range of cutting applications, and will cut 2X material at 45 degrees. The Makita-built high torque motor produces 3,700 RPM for faster cutting. The heavy gauge, precision machined base is engineered for smooth, accurate cutting and added durability in harsh job site conditions. It?s part of Makita?s expanding 18V Lithium-Ion series, the world?s 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.