Battery voltage: 21V Battery total capacity: 60000mAh No-load speed: 0-1500r/min 0-2200r/min Torque: 350N/m This brushless lithium electric wrench adopts brushless technology, no carbon brush replacement, more convenient maintenance. It has super strong torque measured at 350N/m, which is more advantageous than most of the same products measured at 280N/m on the market. The battery uses the military industry lithium battery, the endurance time is longer, the quality is more stable.