NEW 2.0Ah 18Volt Li-ion Battery for MAKITA BL1815 BL1835 LXT400 BL1830 BL1840 | eBay
Makita BL1815, BL1830 Power Tool Battery, 18 Volt 6.0 Ah | Remy Battery
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 18v Original Replacement Battery 3.0AH BL1850B BL1860B BL1830B LXT BL1815 BL1840 LXT400 194204-5 Power tools battery - AliExpress
For Makita 18V 3.0Ah LXT Lithium ion Battery or Charger BL1815 BL1820 BL1830 US | eBay