Makita 40v 8Ah Battery THAT'S ONE BIG BATTERY!!! - YouTube
Amazon.com: BATTIZ BL4025 Replacement Lithium-Ion Battery Pack Compatible with Makita DC40RC Original Charger Fully Charged in 30 Minutes and All 40V XGT Powertools Series : Tools & Home Improvement
New Upgraded 18V 8Ah Lithium Ion Battery,for Makita Power Tool Cordless Drills BL1840 BL1850 BL1830 BL1860B LXT Li-ion Battery - AliExpress