Amazon.com: 2 Packs Replace for Makita 18V Battery 6.0Ah, Replacement Makita 18 Volt BL1860B Batteries BL1820B 1830B 1840B 1850B, Compatible with Makita 18v Tools, Fit with Original Makita 18v Battery Charger :
Makita XAG09Z 18 Volt LXT Lithium-Ion Brushless Cordless 4-1/2 Inch / 5 Inch Cut-Off/Angle Grinder, with Electric Brake with Makita BL1850B 18 Volt LXT Lithium-Ion 5.0Ah Battery - - Amazon.com
Amazon.com: Battery Adapter for Makita DCA1820 18V Compatible with Makita Lithium Battery to DeWalt CA1820 18V DC9180 DC9096 Tool Use : Tools & Home Improvement
Makita BL1850-2 18-volt LXT Lithium-Ion 5.0Ah Battery, 2-Pack- Discontinued by Manufacturer (Discontinued by Manufacturer) - - Amazon.com
Amazon.com: Battery Adapter for Makita 18V Battery, ADP05 Power Source Charger with LED Work Light & 1 PD USB-C & 1 USB Ports, Powered by Makita Lithium-ion Battery (Tool ONLY) : Tools