1、Compatible: The battery adapter is compatible with most styles of 18V to 20V battery adapters, suitable for woodworking and power tool adapters. 2、Multiple Protection Functions: This battery adapter has multiple protection functions such as short circuit protection, overcurrent protection, undervoltage protection, and low power consumption. 3、With USB Interface: The 18V to 20V battery converter has light display, and USB interface which is more convenient to use. 4、Precisely Designed: The battery adapter fits the hole position of the original machine, the shape and size are precisely designed, and the hand touch is still comfortable. 5、ABS Material: Our battery adapter converter is made of premium ABS material so that it is durable and it is the best choice for your old or broken adapter. Item Type: Battery Adapter Converter Material: ABS Gross Weight: 121g/4.3oz Including: One USB Interface Applicable: Compatible with 18 to 20V battery adapter, suitable for woodworking power tool adapter Size: 10.5x7x4cm/4.1x2.8x1.6in 1 x Battery Adapter Converter