The ® 20V max * Lithium-Ion 1/2 in. Drive conductor impact wrench is for tightening or loosening nuts and bolts, motor vehicle repair, body shop maintenance and other applications. The impact wrench a high-capacity, 2.0 Ah Lithium-Ion slide battery for longer life and more power to get the job done. The impact wrench an Electric brake that stops rotation of the tool immediately when the trigger is released to reduce work time for continuous jobs. This power tool is with a dense duty, cast aluminum gear head for strength and durability and an engineering, rubber mold-over grip for comfort. The battery self-discharge and will remain ready-to-use even after storage. The designation, accelerated charger with optimization for the 2.0 Ah li-ion slide battery, the latest technology with an auto shut-off feature to save energy, prevent over-charge and enhance battery life. This impact wrench is a DIY for home use.