Bottom of the converter: for Makita Lithium‑Ion 18V Battery: BL1815, BL1815B, BL1820, BL1820B, BL1830, BL1830B, BL1840, BL1840B, BL1850, BL1850B, BL1860, BL1860B, BL1845, BL1890, BL1890B. Solid & Durable design: This battery adapter can tightly lock the tool and battery together, will not loosen, will not slip off.
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