Understanding the meaning of power tools related terms.
Memory effect - Battery cell remembers the amount of energy in partial discharges Electrode gradually changing its structure. Implications: Premature voltage drop, capacity loss. Origin: Incomplete discharge reinforced by repetitions
Torque is the force that affects rotational motion; the greater the torque, the greater the change in this motion.
SDS drill bits - Slotted Drive System (SDS Max) in the list of abbreviations provided by the Power Tools Glossary from World-Tools.com