Panasonic EYC142B 14.4-Volt Li-ion Impact Driver/Drill & Driver Combo Kit with Light The new 14.4-volt Li-ion Technology is lighter weight and longer running compared to the industry standard It delivers 390-inches-per-pound of power in a lightweight 3.5-pound package The electronic performance monitoring system delivers safe li-ion high performance Operates at 3 speeds and features a brushless motor for 25-percent longer life Provides 18-volt performance in a 14.4-volt package with less weight and size than 12-volts