【Compatible with Makita batteries】The MT18MIL adapter is compatible with BL1830 battery, including BL1820, BL1830, BL1840, BL1850, BL1860, BL1840B, BL1850B, BL1860B, BL1890B, etc. 【Compatible with Milwaukee 18V tools】This adapter can make listed lithium batteries use for M18 18V lithium cordless power tools, and let you enjoy the advantages of extended run-time of Li-Ion Batteries on your existing 18V tools. 【Material】Non-3D printed, sturdy and durable, lightweight and convenient, extend the life of the tool. 【Factory direct store after-sales】 30 days return and exchange, 180 days warranty.If you have any questions, please feel free to contact us and we will give our best to solve question. MAKBOS for Makita for Milwaukee Battery Adapter,MT18MIL Battery Adaptor Compatible for Makita 18V Lithium-ion Battery Convert to Milwauke M18 18V Battery,for Milwaukee 18V Cordless Power Tools