18v 3ah 4ah 5ah 6ah Li-ion Battery Rechargable Battery For Makita 18v Battery Bl1840 Bl1850 Power Tool With Led Indicator - Voltage Regulators/stabilizers - AliExpress
Makita BL1850-2 18-volt LXT Lithium-Ion 5.0Ah Battery, 2-Pack- Discontinued by Manufacturer (Discontinued by Manufacturer) - - Amazon.com
Makita 18V LXT Lithium-Ion High Capacity Battery Pack 3.0Ah with Fuel Gauge (2-Pack) BL1830B-2 - The Home Depot