The first and only cordless Worm Drive saw gives you legendary SKILSAW power to go anywhere. Powered by the TRUEHVL™ battery, designed specifically for our legendary Worm Drive saw. The brushless motor responds to challenging applications by boosting power and torque, and all-magnesium construction makes it lightweight and tough. TRUEHVL™ features a unique battery design that maximizes heat dissipation, patented Stay Cool™ technology that wraps each cell in a temperature controlling material, and intelligent power management that monitors and optimizes each cell. More info here: bit.ly/2NuYTbO