Lipower BL1830 18V 3000mAh Lithium Battery Replacement for Makita 18V Battery BL1860B BL1850 BL1840 BL1850B-2 BL1845 BL1830 BL1820 BL1815 LXT-400 Cordless Power Tools Batteries with LED Indicator - Newegg.com
Makita USA - Product Details -BL1820B
OEM Li-ion Lithium Ion Battery 18V 1500/2000/3000/4000/5000/6000/9000mAh Battery for Makita Power Tool Battery Bl1815 Bl1820 Bl1825 Bl1830 Bl1840 - China Lithium Battery and Power Tool Battery Pack price | Made-in-China.com
2x for Makita BL1815 18V 1.5 Ah Battery BL1815N BL1820 BL1830 BL1850 - Black - Bed Bath & Beyond - 29607865