Amazon.com: Upgraded to 9.0Ah 1 Pack Lithium Ion Battery Replacement for Makita 18V Battery BL1860 BL1830 BL1840 BL1850 BL1850B LXT-400 with LED Indicator Compatible with All Makita 18V Cordless Power Tools :
2Pack 6.0Ah BL1860B Battery Replacement for Makita 18V Battery Compatible with Makita 18 Volt Battery LXT BL1860 BL1850 BL1840 BL1830B BL1815 BL1835 - - Amazon.com
Makita BL1840 18V 4.0AH Battery by Makita - - Amazon.com
Amazon.com: Adnmroku 2Packs 18V 4.0Ah BL1840B Replacement Battery Compatible with Makita BL1830 BL1840 BL1850 BL1860 BL1860B LXT Cordless Power Tools Batteries : Tools & Home Improvement
Amazon.com: Amityke Battery Adapter,Power Wheels Adapter for Makita 18V/14.4V Battery BL1820, BL1830, BL1840, BL1850 with 14 awg Wires Power Convertor for DIY Ride On Truck, Robotics, RC Toys and Work Lights :
Amazon.com: Ibanti 6.0Ah BL1860B Replacement Battery Compatible with Makita 18V Li-ion Battery BL1815 BL1830 BL1835 BL1840 BL1850 BL1860 Compatible with Makita 18 Volt Power Tools 2Packs : Tools & Home Improvement
waitley BL1830 18V 9.0Ah Replacement Battery Compatible with Makita BL1840 BL1850 BL1860 BL1890 Lithium-Ion Battery Tools with LED Indicator - - Amazon .com
Amazon.com: Crivnhar 5 Pack Battery Holder for Makita 18V Battery Mounts Dock Holder Fit for BL1860 BL1850 BL1840 BL1830(w/10 Screws) : Tools & Home Improvement