【Converter bottom】 For Black&Decker 20V Lithium Battery;For Porter Cable 20V For Lithium Battery;For Stanley 20V Lithium Ion Battery 【Converter top】Compatible with Makita BL Series 18V Li-ion power tools.eg:BL1815 BL1820 BL1830 BL1830B BL1840 etc. 【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 【Note】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. 【Package Included】1 x Adapter (Adapter Only, Not Include Batteries & Tools) Package Included: 1 x Adapter (Adapter Only, Not Include Batteries & Tools)