Makita 18V to Milwaukee 12V Battery Adapter

Use your Makita 18V LXT batteries on Milwaukee M12 cordless tools, without buying into a second battery platform. Your Makita 18V LXT battery is 18V and a Milwaukee M12 tool expects 12V. The converter holds the output at the tool’s level for as long as the battery lasts. Built with a durable injection-molded ABS housing and pure copper contacts for steady current delivery. It removes the need to keep separate batteries for different platforms, which saves money and simplifies the workflow. It also carries battery protection electronics (BMS) inside.

Specifications

• SKU PTA-MAK18-MIL12
• Fits this battery Makita 18V LXT (Lithium-Ion)
• Battery voltage 18V
• Runs these tools Milwaukee M12 (Lithium-Ion)
• Tool voltage 12V
• Housing ABS (Injected)
• Terminals Copper
• Current rating 40A continuous (80A peak at 18VDC for up to 2 seconds)432 Watt continuous at 10.8V nominal
• Weight 144 g (5.1 oz / 0.32 lb)
• Colour Black, Red
• Operating humidity 5–95% RH
• Operating temperature -10 °C to 50 °C (14 °F to 122 °F)
• USB port No
• Built-in BMS protection Yes
• What's in the box Battery adapter
• Warranty 12 months after the date of delivery
• Revision Revision 01 (released on September 25, 2023)

Why choose this adapter

• A Battery Management System inside the adapter cuts power before the battery is drained too far — protection your battery may not have on its own.
• Injection-moulded ABS, not 3D printed — no layer lines to split under load.
• Solid copper terminals, so less of the current is lost as heat.
• Rated for 40A continuous with 80A peak at 18VDC for up to 2 seconds, so a high-draw tool is not held back by the adapter.
• Covered by a 12-month warranty from the day it arrives.

Makita 18V LXT and Milwaukee M12 compatibility

It works in one direction only: Makita batteries powering Milwaukee tools. For the opposite pairing, see adapters that run on Milwaukee M12 batteries.

Compatibility can vary with the exact battery and tool model. Before ordering, confirm that your battery belongs to the Makita 18V LXT platform and that your tool takes Milwaukee M12 batteries.

Important charging and safety information

This adapter is for powering cordless tools and nothing else. It cannot charge Makita or Milwaukee batteries and must never be connected to a charger of any kind. Always take the battery out of the adapter before charging, and charge it on the original charger made for your Makita 18V LXT battery.