MILWAUKEE M12 Battery Adapter To Use Other Brand Batteries with Milwaukee M12 Tools

May 26
2 min read

Updated: 12 hours ago

There are a few unique Milwaukee M12 tools that would be nice to have, but I don't really want to invest in their 12V system. I already have 2 different 12V tools that I choose due to the low cost of ownership for casual to medium duty use. I have some HERCULES 12V tool batteries, and Hyper Tough 12V tool batteries. I know, I also never thought I would buy and use Walmart power tools, but don't knock it till you try them. The HyperTough tools have blown me away, especially for the low cost. It's almost Milwaukee quality at throw away prices.

HERCULES 12V Battery To MILWAUKEE M12 Adapter

The HERCULES 12V batteries are physically compatible with Dewalt 12V batteries, but the resistor is different. There are a few adapters that allow you to use Dewalt 12V batteries on Milwaukee M12 tools.

This is the sleekest one I've seen. 3D printed and low profile, but expensive. Might as well buy batteries at that price. Buy it on eBay.

Product listing shows a red-and-black Milwaukee tool on a yellow DeWalt 12V battery, with text: Dewalt battery - Milwaukee M12 Tool adapter

Here are the files to 3D print something similar, but not quite as sleek as the one shown above: Download it on Cults3D.

HYPERTOUGH 12V Battery To MILWAUKEE M12 Adapter

Unfortunately, since the HyperTough 12V system is underappreciated as a quality tool, I could not find any adapter mods. The closest thing is this one, which could probably be modified in CAD to work. Link to Cults3D.

Webpage titled PARKSIDE X12 V ON MILWAUKEE M12 BATTERY ADAPTER shows a black-and-red 3D-printed battery adapter on a desk.

This is the reverse direction I want to adapt, but I like the orientation of the battery pack. Lower profile than putting it inline. Link to eBay.

E-commerce listing screenshot showing a yellow DeWalt cordless drill with battery on a wood surface and title Milwaukee M12 Battery - Dewalt 12V Tool Adapter

RIDGID 18V Battery To MILWAUKEE M12 Adapter

I primarily have Ryobi 18V tools, but the stem on those batteries makes the adapters super clunky. The other 18V tools that I use are RIDGID 18V. There are some adapters for RIDGID 18V batteries to MILWAUKEE M12, but they do use a step-down converter. The question is how good is the step down converter, and does it drain the battery when not in use.

Link to eBay listing.

eBay listing for a Milwaukee M12 to Ridgid 18V battery adapter, showing a red adapter, drill, battery, and Buy It Now button

TO BE CONTINUED...

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