Compatible with for Ryobi Oneand 18V tools Series P7131, P340, P208, P236, P601, P135, P515, P505, P731 etc.Convert for Dewalt 20V or for milwaukee 18V battery Replace for Ryobi P104 P105 P102 P103 P107 P108 batteries. Compatible with for Dewalt 18V/20V and for Milwaukee M18 18V Lithium-ion Battery:Compatible DCB205 DCB206 DCB204 DCB203 DCB200 DCB201 etc. Compatible 48-11-1811, 48-11-1815, 48-11-1820, 48-11-1822, 48-11-1828 etc. Can quickly convert Dewalt 20V/ for Milwaukee 18V battery to work for Ryobi 18V tools. Built-in 5V 2.1A (Max) USB Charging Function.when the mobile phone is temporarily out of power, you can charge the charging treasure function. Notice: This adapter will not fit into any chargers. This battery adapter built-in high intelligent Protection chips against potential damage caused by over-charging, over-discharging, over-voltage, over-current,short-circuit. Product Advantages: This adapter can make listed lithium batteries use for Ryobi 18V lithium cordless power tools, and let you enjoy the advantage of extended run-time of li-Ion batteries on your existing tools. Design is simple, durable, convenient. For a long time do not use, please separate from the battery. This converter does not support the ability to charge the power tool battery WARNING: 1.Make sure that the battery is fully inserted for normal use 2.Please do not force into the battery pack, if the battery pack can not be installed, the installation method may be wrong 3.This product is only compatible with the tools, not compatible with the charger, Do not use the adapter to charge the battery. Material: ABS colour: green Package Contents: 1 x DM18RL Battery Adapter (Only Adapter, No Battery)