Panasonic Cordless Power Tools are made based on these guidelines: cordless capability, power, lightweight, and ergonomic design. These tools can be used almost anywhere due to the cordless design. The Ni-MH battery charging system allows for long battery life and quicker re-charging time. Also, the cordless tools provide more than enough punch using high-power magnet motors, heat resistant brushes and built-in cooling fans. Ergonomic design means the tools are compact, well-balanced and easy to operate without fatigue.