Makita, a pioneer in brushless motor technology and battery innovation, combines both in the 18V X2 LXT (36V) Lithium-Ion Brushless 7" Paddle Switch/Angle Grinder with Electric Brake. It's powered by two 18V Lithium-Ion batteries (batteries and charger sold separately) for 36V power and performance, and has an electronically-controlled BL Brushless motor that matches torque and RPM to the application. Makita 18V X2 means freedom from the cord, even for demanding applications like grinding and cut-off applications that often call for a corded grinder. Best of all, users can remain in one battery platform, using the same fast-charging 18V batteries on the XAG12Z1 as they use across the Makita 18V LXT cordless tool system. The XAG12Z1 is equipped with efficiency features for maximum performance. The electric brake stops the grinding or cut-off wheel in 4.5 second or less for maximum productivity, and the Electronic Torque Control turns the motor off if rotation speed suddenly slows or the wheel is forced to a stop. For consistent performance, Automatic Speed Change technology adjust speed and torque during operation. It's part of Makita's expanding 18V Lithium-Ion system, the world's largest cordless tool system powered by 18V Lithium-Ion slide-style batteries. 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.