The Milwaukee 0490-20 V4 Screwdriver is a heavy-duty power tool equipped with a 1/4" hex quick release chuck for easy bit changes. This screwdriver, powered by a 4V lithium-ion battery, offers a speed of 600 RPM and features a multi-positional shape for improved access in tight spaces. I do not have a battery to test if working. Buy as is condition. No refunds.