1 / 2 x 21V Lithium Battery （ Depends on the style you choose ）. For Makita BL1850 BL1860B BL1860 BL1850B BL1840 BL1840B BL1830 BL1830B BL1820 BL1820B BL1815 BL1815B BL1835 BL1835B BL1845B BL1845 194205-3 194205-5 194309-1 LXT400 BCl180 BCl180f.
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