18V 6.0 Ah Extended Capacity Battery Replacement for Milwaukee, Compatible with M-,-18 48-11-1811, 48-11-1815, 48-11-1820, 48-11-1822, 48-11-1828, 48-11-1840, 48-11-1841, 48-11-1850, Power Tool - Amazon.com
Power Wheels DIY Adapter For Milwaukee M18 Battery 18V Dock Power Connector – ASA College: Florida
Amazon.com: Power Wheels Adapter for Milwaukee, M18 Power Wheels Battery Conversion Kit with Fuse Holder and 3PCS 30Amp Fuses for 18V Battery UIInosoo for DIY, RC Toys and Robotics, Red : Tools