About this item 【Use for Dewalt 20V Tools】:This BAU20DW battery adapter converts for Bauer 20V Lithium battery to DCB200 20V lithium battery, perfect replacement for DEWALT 20V lithium battery,which means you can use your a lot of for Bauer 20V batteries to for for Dewalt 20V Cordless Tools,save your money on new DCB200 serie 20V battery. 【Adapter Functionality】Only For Ba uer 20v Lithium Battery to use for Dewalt 20V Max Cordless Tools. the adapter facilitates battery installation. it is compatible with bauer 20v Hyper Maxbatteries, providing for dewalt max power for tools. 【Convert for Dewalt 20V】Converter top: Compatible with DeWalt DCB series 18V/20V MAX lithium battery power tools; 【for DeWalt power tools must be compatible with DCB180, DCB181,N123282, N123283 DCB202 DCB204 DCB205 DCB206, 18V/20V(MAX) lithium ion battery models】 【Safe Protection】Solid design, ABS high quality material,High temperature resistance, wear resistance and drop resistance, convenient to carry and easy to use.【Attention】：It cannot be used to charge the battery of a power tool, and the adapter cannot be plugged into any charger. If you need to charge the power tool battery, use the original battery charger.If you need to charge the power tool battery, please use the original battery charger. Bottom of converter: Compatible with Bauer 20v lithium ion batteries; Converter top: Compatible with Dewalt DCB Series 18V/20V(MAX) lithium battery power tools; For Dewalt power tools must be compatible with DCB180 DCB182 DCB184 DCB200 DCB201 DCB203 DCB204 DCB205 DCB206,18V/20V(MAX) Lithium-ion battery Model Compatible 】 Package Included: 1x Adapter (Only Adapter, No Battery) WARNING: Make sure that the 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 wrong This 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 converter