Amazon.com: Synergy Digital Power Tool Battery, Compatible with Makita BTW450 Power Tool, (Li-ion, 18V, 7500mAh) Ultra High Capacity, Replacement for Makita BL1815 Battery : Tools & Home Improvement
Makita USA - Product Details -BTW450Z
519199-5 Armature Assy Makita Genuine part for impact wrench 1/2 | eBay