Makita BGA452 18-Volt LXT Lithium-Ion Cordless 4-1/2-Inch Cut-Off/Angle Grinder Kit Makita-built motor delivers 10,000 RPM for 50% faster grinding Compact, ergonomic design at 12-1/2-inches long; weighs only 5.3 lbs. for reduced operator fatigue A built-in L.E.D. protection circuit with over-torque control protects the motor Makita LXT Lithium-Ion battery and 30-Minute Rapid Optimum Charger produces 430% total lifetime work Tool not equipped with Star Protection- only compatible with Makita 18V LXT 3.0Ah battery (BL1830) Makita-built motor delivers 10,000 RPM for 50% faster grinding Compact, ergonomic design at 12-1/2-inches long; weighs only 5.3 lbs. for reduced operator fatigue A built-in L.E.D. protection circuit with over-torque control protects the motor Makita LXT Lithium-Ion battery and 30-Minute Rapid Optimum Charger produces 430% total lifetime work with 2.5X more cycles 3-year warranty on tool; 1-year warranty on batteries and charger.