Features: This battery adapter can convert Dewalt 18V Li-Ion Battery to Makita power tools to use, it is convenient and practical. If you have Dewalt 18V Lithium-ion Battery or Makita 18V Lithium-ion Power Tools,this adapter can convert Dewalt 18V Lithium-ion Battery To Makita 18V Lithium-ion Battery,So you can use Makita 18V Lithium-ion Power Tools easily when your Makita 18V Battery power out . This battery converter is compatible with Dewalt 18V Lithium-ion Battery and Makita 18V Lithium-ion Power Tools. This battery adapter for Dewalt 18V Battery Replace for Makita BL1830 BL1840 BL1850 BL1860 18V Li-Ion Battery The adapter has 1 USB output interface and 1 Type-C output interface, which supports fast charging of any USB device,such as phone ,tablets ,camera ,USB fan or any USB devi.