The M12 FUEL 1/4" Hex two-speed Screwdrivers POWERSTATE Brushless Motor runs cool with no wearable components. The REDLITHIUM 2.0 Compact Battery Pack (not included) delivers more power and recharges than standard lithium-ion batteries, even in extreme jobsite conditions. The onboard fuel gauge helps you monitor the charge more accurately, that means there’s less downtime on the job. REDLINK PLUS intelligence ensures maximum performance and protection from overload, overheating and over-discharge. The M12 FUEL1/4" Hex 2-speed Screwdriver’s optimized design results in superior speed for greater productivity on the jobsite. Its compact size allows users to work in tight spaces. The built-in LED worklight illuminates work surfaces in dark work spots.