Amazon.com: YongerTool 5.0Ah BL1850B Battery Replacement for Makita 18V Battery,5000mAh High Capacity Compatible with Makita LXT Lithium Ion Battery BL1815B BL1840B BL1830B BL1820B,2 Pack with Mount Holder : Tools & Home Improvement
DIY: Repair Makita BL1830 Battery by Making One Good From Two Bad : 8 Steps (with Pictures) - Instructables
2Pack Replacement For Makita 18v Battery 6ah,with Makita Inverter Turn to 110V/150W Portable Power Station - Walmart.com
Makita 18V LXT Lithium-Ion High Capacity Battery Pack 3.0Ah with Fuel Gauge (2-Pack) BL1830B-2 - The Home Depot