【Function】MT20DL battery adapter converts for Makita 18v Lithium battery to for DeWalt 18v-20v Max lithium battery, perfect replacement for Dewalt 18-20 volt cordless power tools lithium battery. 【Compatibility】Convert adapter top port compatible with Dewalt 18-20 volt cordless power tools. Convert adapter bottom port compatible with Makita 18v lithium batteries(BL1815、BL1820、BL1830、BL1830B、 BL1840、BL1850 、BL1850B、BL1860 ) etc. 【Safety】converter adapter built-in voltage protection chip, comply with FCC RoHS and CE security testing standards, made of high quality ABS plastic, safe and durable. 【Notice】Converter can't be used for power tool battery charging, this adapter will not fit into any chargers. Specification: Product size: 12.5*9*6.5cm Material: ABS Applicable type of charger: lithium battery Input voltage range: 20V Output voltage: 18V Colour: Black Package included : 1x Battery Adapter(Battery not include)