Amazon.com: 1x Adapter Fits Bauer 20v MAX Cordless Tools Compatible with Milwaukee M18 (Not Old V18) Red Lithium Batteries- Adapter Only : Tools & Home Improvement
Alian Adapter Converter for Milwaukee M18 18V Li-ion Battery to for Milwaukee V18 48-11-1830 Battery;48-11-2200 48-11-2230 18V NI-CD Tool Battery Adapter - - Amazon.com
Milwaukee M18 18V to DeWalt 18/20V Battery Adapter – Ecarke
TSV M18 Battery Adapter, Power Wheel Adapter Fit for Milwaukee M18 Battery 18V Dock Power Connector 14 Gauge Robotic, Red - Walmart.com
Amazon.com: for Milwaukee M18 Battery Adapter to Milwaukee V18 48-11-1830 48-11-2200 48-11-223 Power Tool : Tools & Home Improvement
18v nicad to 18 volt lithium ion battery adapter hack for Milwaukee cordless tools - YouTube