Features: 1: The Battery Adapter is Compatible with Makita 18V lithium-ion batteries, including BL1815, BL1830, BL1830B, BL1840, BL1840B, BL1850, BL1860B, BL1860 ect... 2:The adapter has 1 USB output interface and 1 Type-C output interface. The respective output voltage is up to 18W, which supports fast charging of mobile phones,tablets ,fans and other USB device (Dual ports can output at the same time.) 3:It also can be used as a battery Mound Holder, attached to a belt, or nailed to the wall. 4:ABS+PC material ,Compact design, lightweight, easy to carry and safer to use 5:Equipped with a built-in protection system, our adapter safeguards against Over-current protection,over-voltage protection ,over-power protection and short circuit protection Package included : 2x Battery Adapter.