Amazon.com: Battery Adapter Converter for Milwaukee M18 18V Battery to Hitachi 18V BSL1830C BSL1815X BSL1815S BSL1830 Battery, to Metabo HPT 18V Battery, Work with Hitachi & Metabo 18V Slide Style Tools :
Milwaukee vs. DeWalt - Comparing 2 Iconic Tool Brands
1x Adapter # For Hitachi 18v Li-Ion Series Tools To Milwaukee M18 Li-Ion Battery | eBay
Hitachi/Hikoki 18v battery adapter to Milwaukee m18 Tools, for one piece | eBay
Battery Adapter For Milwaukee 18v Lithium Battery Converted To For Hitachi / For Hikoki 18v Lithium Batteries Power Tool Use - Ac/dc Adapters - AliExpress