Cordless angle grinders powered by 18V Li-ion battery, and equipped with highly enhanced Brushless DC motor. A built-in controller changes the cutting speed automatically according to load condition, enabling users to obtain high speed rotation on light duty application/ high torque on heavy duty application. User Benefits: Constant speed under load; high power motor; anti-restart function; soft start feature; battery fuel gauge; rubberised soft grip; electronic current limiter for overload protection; slide switch conveniently located for one hand operation. Battery & Charger are sold separately.