DM18M Adapter converts for Dewalt 20V Lithium Battery and for Milwaukee 18V M18 Lithium Battery to for Makita 18V Lithium Battery BL1830 BL1840 BL1850 - - Amazon.com
Amazon.com: YongerTool 5.0Ah BL1850B Battery Replacement for Makita 18V Battery,5000mAh High Capacity Compatible with Makita LXT Lithium Ion Battery BL1815B BL1840B BL1830B BL1820B,2 Pack with Mount Holder : Tools & Home Improvement
Amazon.com: 4 Pack 18-Volt Replace for Makita 18V Battery BL1860B, LXT Lithium- Ion 6.0Ah Ultra High Capcaity Compatible with Makita 18V Battery BL1850 BL1850B BL1840 BL1840B BL1830 BL1830B BL1815B Battery, Black :
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
Amazon.com: Crtbelfy Battery Holder Mount for Makita 18V Battery Dock Holder Fit for BL1860 BL1850 BL1840 BL1830 Batteries - 5 Pack : Tools & Home Improvement