The Porter-Cable
PCC641LB is part of the
Cordless Drills & Impact Drivers test program at
Consumer Reports. In our lab tests, Impact Driver
models like the PCC641LB are rated on multiple criteria, such as those
listed below.
Power:
A high score means greater torque, or twisting force. Models with lots of torque are better at driving fasteners into tough materials and loosening tight lug nuts.
Run time:
A higher score means longer battery life to work without interruptions.
Charge time:
A high score means the battery recharges quickly, minimizing downtime between uses.
