Function description:This adapter can make 18V lithium batteries of Makita use on Porter Cable Black&Decker Stanley Lithium Cordless power tools,and let you enjoy the benefits of extended run-time of Li-Ion Batteries on your existing 18V tools.Maximum initial battery voltage(measured without a workload) is 20volts, Nominal voltage is 18volts.Applicable Makita 18V Li-ion battery model: BL1815,BL1815B,BL1820,BL1820B,BL1830,BL1830B,BL1840,BL1840B,BL1850,BL1850B,BL1860,BL1860B,BL1845,BL1890,BL1890BConverted to Black&Decker 18/20V Lithium battery model: 18V: BL1518,BL2018 20V(MAX): LB20,LBX20,LBXR20,LB2X2020,LB2X3020,LB2X4020Converted to Porter Cable 20V(MAX) Lithium battery model:PCC680L,PCC681L,PCC682L,PCC685LConverted to Stanley 18V/20V(MAX) Lithium battery model:FMC680L,FMC687L,FMC688L,SCB20C-A9,SCB20D-A9Package Included:1x Adapter (Only Adapter, No Battery)WARNING : Make sure that th e battery is fully inserted for normal useMake sure that th e battery is fully inserted for normal use Please do not force into the battery pack, if the battery pack can not be installed, the installation method may be wrongPlease do not force into the battery pack, if the battery pack can not be installed, the installation method may be wrong This product is only compatible with the tools, not compatible with the charger, Do not use the adapter to charge the batteryThis product is only compatible with the tools, not compatible with the charger, Do not use the adapter to charge the battery When you need to charge the battery, remove the converterWhen you need to charge the battery, remove the converter