Flexible Power System - Match battery to application; Litheon™ 36V batteries - The most advanced Li-ion battery available today; Brute Tough™ Construction with Unibody Powertrain, Metal-Reinforced Collar and Durashield™ Housing; High Torque Mode Produces over 600 in.-lbs.; Externally Accessible Brushes - For brush replacement in as little as 2 minutes; Ratcheting, Carbide Tooth Single Sleeve 1/2" Chuck - For one-handed bit changes; Bosch Designed Powertrain with Metal Gears; Litheon™ Fast Charger - Charges 36V batteries to 80% of capacity in 30 minutes; 15-Position Clutch