【Adapter Converter Function】: Suitable for Makita 18V batteries: BL1860 BL1850 BL1840 BL1830 BL1815. The product is installed on for Makita 18V battery and works in for Makita 12V power tools. 【For Makita 12V Tools】: Perfectly compatible with Makita 12V power tools. For Makita 12V long-direction interface, drills, cordless drill drivers, impact drivers, cordless screwdrivers, work lights, fans, LED lights, etc. 【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. 【Quality & Warranty】 : 12-Month Warranty. We're confident of our products' quality. A new replacement instead of a repair within warranty due to faulty materials or quality within the specified warranty without c 【Important Note】: 1. This battery adapter can not be used for power tool battery charging. 2. If you don’t use it for a long time, please be sure to remove the battery from the adapter MAK-MT18MT12-01