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 LXT 10 in. 18V Lithium-Ion Brushless Electric Battery Chainsaw Kit (4.0Ah) with bonus 18V LXT Lithium-Ion Battery 4.0Ah XCU06SM1BL1840B - The Home Depot
Makita 18V LXT Lithium-Ion Brushless Cordless 4-1/2 / 5-Inch Paddle Switch X-LOCK Angle Grinder with Battery and Charger Starter Pack
Makita 18V LXT Lithium-Ion Battery and Rapid Optimum Charger Starter Pack (5.0Ah) with bonus 18V LXT 6-1/2 in. Circular Saw BL1850BDC2XSS02 - The Home Depot