18v 6.0/8.0/10.0ah Rechargeable Li-ion Batteries For Makita Battery Power Tools 6000mah 18 V Replacement Bl1860 Bl1850 6a 8a 10a - Rechargeable Batteries - AliExpress
Amazon.com: [Upgraded to 9.0Ah] 18 Volt 9000mAh BL1890B Battery Compatible with Makita 18V Battery Lithium-Ion BL1890 BL1860 BL1830 BL1840 BL1850 BL1850B Cordless Power Tools with LED Indicator(black white) : Tools & Home