The Makita DGA900 is a high powered 230mm (9"") cordless angle grinder powered by two 18V Li-ion batteries in series. The 36v DC motor delivers more power and run time without leaving the 18v Lithium-ion platform. Featuring Automatic Torque Drive Technology (ADT): Automatically changes the cutting speed according to load condition for an optimum operation. Active Feedback Sensing Technology (AFT): Shuts down the tool to protect the user if the rotation speed suddenly slows down. Features Brushless motor. Electronic current limiter. Soft Start. Anti-restart function. Electric brake. Active Feedback Sensing Technology (AFT): Shuts down the tool to protect the user if the rotation speed suddenly slows down. Automatic Torque Drive Technology (ADT): Automatically changes the cutting speed according to load conditions for optimum operation. Soft Start. Ergonomically designed handle with soft grip. Battery guard. Large switch lever with lock off function. Battery indicators for