waitley 18V 9.0Ah Replacement Battery Compatible with Makita BL1830 BL1840 BL1850 BL1860 BL1890 Lithium-Ion Battery Tools with LED Indicator - - Amazon.com
18V Battery BL1840 BL1830 Super Fast Charger for All Makita BL1860 BL1850 BL1820 BL1815 LXT-400 194205-3 194204-5 BL1830B BL1830B-2 BL1850-2 BL1850B BL1850B-2 with LED Screen, USB Port - - Amazon.com