Amazon.com: TURPOW 7.0Ah Replacement for Makita 18 Volt Battery BL1815 BL1830 BL1840 BL1850 BL1860 194205-3 LXT-400 for Makita 18Volt Batteries LXT Lithium ion Cordless Power Tools with 2 Packs Wall Mount Holder :
For MAKITA BL1815N 18 Volt 2.5Ah LXT Li-Ion Compact Battery BL1820 BL1830 BL1815 | eBay
2-Pack 18V 6.0Ah BL1850B Replacement Lithium-Ion Battery with LED Indicator Compatible with Makita 18V BL1830B BL1860B BL1820 LXT-400 - Walmart.com
Makita BL1815N 18V 1.5Ah Lithium Ion Battery (2-pack) - Walmart.com