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: Xunbao 2643-21CT 48-11-1811 M18 Li-ion Battery Plastic Case Charging Protection Circuit Board for Milwaukee 18V M18 48-11-1815 3Ah 4Ah 5Ah PCB Board Shell : Tools & Home Improvement