Amazon.com: [2-Pack] High Power 9.0Ah! Long-Lasting 18V Battery for Milwaukee M18 Cordless Tool Battery (Fit All M18 XC Red Lithium Models) : Tools & Home Improvement
SUnMilY 2 Pack M-18 Battery 9.0 Ah for Milwaukee 18 Volt Batteries, High Output 18V 9000 mAh Replacement for 48-11-1852 48-11-1850 48-11-1840 48-11-1890 48-11-1828 with 2 Holder : Amazon.ca: Tools & Home Improvement
2 PACK 7.0Ah For Milwaukee M18 18-Volt 48-11-1860 Lithium-Ion Compact Battery US | eBay