Product Description About this item 【Use for Makita 18V Tools】:For Makita 18V Li-ion Cordless Tools Works On Hilti 22V Batteries Pack (Not Compatible with 18v Advanced Battery)Replace for makita 18V Li-ion bateriesBL1860B, BL1860, BL1850, BL1845. 【Expand Brand Line】-Adapter is convert for Hilti B22 21.6V 22V Battery Li-ion battery to work for Makita 18V tools. Convert your Hilti B22 Li-ion battery to for Makita 18V Li-ion battery, and expand your Hilti to for Makita power tool lines, giving new life to your used Hilti batteries and saving you money. 【Output 5V 2.1A USB Port】Built-in 5V 2.1A (Max) USB Charging Function.when the mobile phone is temporarily out of power, you can charge the charging treasure function. Notice: This adapter will not fit into any chargers. 【Safe & Reliable】- Its ultra-compact design, made from high-quality ABS, is durable and lightweight, easy to carry and use, and will not damage batteries or tools.Adapter cannot be charged. If you need to charge, unload the adapter first.