Airgas - MET48-11-1811 - Milwaukee® M18™ Redlithium™ 18 Volt Battery
1x Milwaukee M18 RED Li-Ion Battery To Old-Style V18 18-Volt Ni-CD Tool Adapter | eBay
Milwaukee M18 18-Volt 2.0 Ah Lithium-Ion Compact Battery 48-11-1820 - The Home Depot
POWHAZY Battery Converter for Milwaukee to Dewalt Battery Adapter, Convert Milwaukee M18 18V Battery to Dewalt 20V Battery for DeWalt Tool Use - - Amazon.com