Features: 1.This adapter can make listed lithium batteries FOR Milwaukee use on FOR Bosch 18V Li-ion cordless power 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 18V Lithium-ion batteries and replacement batteries in most of the batteries FOR Milwaukee, etc. 2.Use for Bosch 18V Li-ion cordless power tools. 3.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 Battery Adapter For Bosch 18V Li-ion cordless power tools (Only Adapter, No Battery) 1 x User Manual 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 the tool(arrow direction) properly and ensure the adapter safety button fit to tool properly, then start to use the tool. WARNING: 1.To reduce the risk of serious personal injury, turn tool off and remove the battery pack with an adapter before making any adjustments or removing/installing attachments or accessories. Any accidental start-up can cause injury. 2.Do not store or carry the adapter with the battery installed so that metal objects can contact exposed battery terminals and result in short circuit and fire hazard. 3.Use proper batteries for this adapter, improper battery can lead to adapter's damage. 4.Using an adapter not suitable for machines can lead to malfunctions or cause damage to the power tool.