waitley 18V 6.0Ah Replacement Battery Compatible with Milwaukee M18 18v 6000mAh M18B Lithium-Ion Battery Cordless Power Tools - - Amazon.com
Amazon.com: KS smithy Battery Mount Holder Magnetic Compatible with The Milwaukee M18 (8-12ah),(5-6ah),(3-4ah), (No Battery),Mounted to Steel Surface with Magnets, Removable (MWK 18V3) : Tools & Home Improvement
Amazon.com: Milwaukee 48-11-1840 18-Volt M18 Red Lithium Xc 4.0 Ah Battery Packs : Tools & Home Improvement