Amazon.com: 6.0Ah Replace for Makita 18V Battery BL1860B, Ultra High Capcaity Compatible with Makita 18 Volt Lithium Battery BL1850 BL1850B BL1840 BL1840B BL1830 BL1830B BL1815B with Battery Holder 2 Pack, Black : Electronics
Amazon.com: 【Upgrade】 CaliHutt 18V 6.0Ah Replacement Battery for Makita 18V Battery with LED Indicator BL1830 BL1850 BL1840 BL1850B-2 BL1845 BL1815 BL1820 LXT-400 LXT Cordless Power Tools Lithium-ion Battery : Tools & Home
Amazon.com: EID 150W Power Inverter Portable for Makita 18V BL1830 BL1850 Lithium Battery,DC 18V to AC 110V Outdoor Inverter with AC Outlet and Dual USB+200LM LED : Automotive