Adapter (adapter) for Makita LXT 18V battery-to the Hitachi Tool (Hikoki) 18V - AliExpress
Battery Adapter for Makita 18V BL Series Lithium Batteries Be Used for Hitachi/Hikoki 18V Flat Push Type Lithium Battery Tools - AliExpress
Makita to Milwaukee 18V Battery Adapter – Badaptor
Amazon.com: EHB18MTL EHB18HTL EHB18MBL Adapter Converter for Einhell Li-ion Battery for Hitachi Hikoki for Makita for Metabo Lithium Tool (EHB18HTL) : Tools & Home Improvement
Detachable Universal Multi-adapter Applicable For Hikoki Panasonic Makita Bosch Battery Transform Adapter For LUXROVER Jobsite Lights