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 :
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
2Pack For Makita 18V 6.0Ah LXT Lithium-Ion BL1830 BL1850 BL1860 tool Battery NEW 751433651344 | eBay