For Makita 18V 12Ah LXT Lithium-Ion BL1860 BL1850 BL1830 LED Battery or Charger | eBay
Converter Adapter For Makita 18v Li-ion Battery Bl1830 Bl1850 To For Makita G Series Bl1813g Bl1815g Bl1811g Lithium Battery - Power Tool Accessories - AliExpress
Makita USA - Product Details -BL1850B-2
Amazon.com: BL1860B & DC18RC for Makita 18V Battery and Charger 6.0 AH Combo, Replace BL1860 BL1850 BL1840 BL1830 BL1815 BL1820 : Tools & Home Improvement