Li-Ion Battery Adapter For Makita 18 V Li-Ion Converts to Metabo Power Tool 18V
(not for the HPT series). The base is for Makita 18V lithium batteries：Lithium-Ion 18V Battery：BL1815，BL1815B，BL1820，BL1820B，BL1830，BL1830B，BL1840，BL1840B，BL1850，BL1850B， BL1860，BL1860B，BL1845，BL1890，BL1890B.