Amazon.com: Adapter Converter for Makita 18V BL1860 BL1850 BL1840 Li-ion Battery to Ridgid AEG 18V Hyper li-ion Power Tool Battery : Tools & Home Improvement
Zuliati Upgraded 9.0Ah BL1890B Replacemet Battery Compatible with Makita 18V Battery BL1890 BL1860 BL1830 BL1840 BL1850 BL1850B Cordless Power Tools