1. The converter allows 20V lithium batteries to be used as 18V, making them compatible with most 18V tools and enabling the use of 20V MAX compact batteries. 2. The DCA1820 adapter is not compatible with 12V or 20V/60V FLEXVOLT batteries. This adapter does not require charging. (Please remove the adapter before charging the battery.) 3. Built with advanced technology, including spot welding, automatic internal resistance testing, and automated battery sorting. 4. The DCA1820 adapter is compatible with: MAX XR DCB201, DCB203BT, DCB206 Compact Batteries. 5. Compatible with 18V replacement batteries: DC9096, DE9039, DE9095, DE9096, DE9098, DW9095, DW9096, DW9098, DE9503 USB output: DC 5V/2.1A Type: Battery Converter Adapter Rated Current: 2.5A Ambient Temperature: 25°C Compatible with 18V/20V lithium batteries Color: As shown Material: Metal + Plastic Package Contents: 1 x Battery Converter Note: Light reflection and display differences may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.