Description: 1.This adapter can make most lithium batteries for DEWALT and for Milwaukee use on for CRAFTSMAN 19.2V tools, and let you Enjoy the benefits of extended run-time of Li-Ion Batteries on your existing 18V tools. 2.Maximum initial battery voltage(measured without a workload) is 20volts, Nominal voltage is 18volts. Notice: 1.Allows for use of 20V MAX batteries and replacement batteries in most batteries for DEWALT and for use of 18V Lithium-ion batteries and replacement batteries in most of batteries for Milwaukee ,etc. 2.Use for CRAFTSMAN 19.2V plug power tool machines. 3.USB port for charging phones and powering equipment that uses usb, and USB Line is not included. 4.Can not be used for power tool battery charging, this adapter will not fit into any chargers. If you need to charge your power tool batteries ,please use the original battery chargers. Package included: 1 x USB Battery Adapter For CRAFTSMAN 19.2V Power Tools INSTRUCTION GUIDE: 1.Inert battery into battery adapter(arrow direction) properly and ensure battery safety button fit to adapter properly. 2.Inert battery adapter with battery to tool(arrow direction) properly and ensure adapter safety button fit to tool properly, then start to use tool. 3.As the right photo, insert your USB cable into USB port, enjoy your time and enrich your life.