Power Up Your Milwaukee M12 Tools with M18 Batteries Using This Ingenious Adapter


SKU B0CBQ31B8S Category


Unlock the full potential of your Milwaukee M12 tools by using higher capacity M18 batteries with this innovative EID adapter. This clever little device allows you to connect M18 batteries to M12 tools, providing longer runtimes and more power for enhanced performance.

The adapter is equipped with advanced voltage reduction technology that safely steps down 18V from M18 batteries to 12V for M12 tools. This protects your valuable power tools from overvoltage damage while delivering optimized power output. No more constantly swapping flat M12 batteries during extended jobs or having your tools die unexpectedly mid-task.

With this M18 to M12 adapter, you can tap into the superior capacity of high output M18 REDLITHIUM battery packs to run M12 fuel, surge, and sub-compact tools for 2-3X longer versus standard M12 batteries. Get the freedom to work efficiently for hours between charges when using high demand tools like M12 Fuel impact drivers, ratchets, oscillating multi-tools, and more.

The adapter housing is made from durable ABS plastic to withstand jobsite abuse alongside the Pro system tools it’s designed for. The lightweight, compact size won’t weigh you down and is easy to toss in your tool bag or pocket for convenient portability.

An integrated LED fuel gauge lets you check remaining battery life at a glance before connecting a tool. Stubby mounting tabs allow the adapter to securely lock into the battery port of M12 tools without adding much length or bulk. Rugged metal side tabs ensure a snug fit when changing between different M18 battery packs without any wobble or power interruption.

For the ultimate in versatility, the adapter automatically adjusts voltage for use with any MILWAUKEE M18 battery chemistry including REDLITHIUM CP, XC, and HIGH OUTPUT as well as M18 FUEL packs. This gives you the flexibility to use higher capacity batteries from other Milwaukee 18V platforms to maximize runtime for M12 tools.

Stop struggling with weak, short-lived M12 batteries and upgrade to the M18 adapter for noticeably better performance. Power through bigger tasks per charge using abundant 18V juice from M18 batteries.


– Converts M18 battery voltage to 12V to safely power M12 tools

– Provides 2-3X more runtime than M12 batteries for extended use

– Allows tapping into the higher capacity of M18 REDLITHIUM battery packs

– Advanced circuitry protects against overvoltage & overcurrent

– Durable ABS housing withstands drops, impacts, moisture & chemicals

– Integrated LED indicator shows M18 battery fuel level at a glance

– Compact size adds minimal length & easily fits in pocket or pouch

– Metal side tabs ensure a snug, wobble-free battery fit

– Automatic voltage adjustment for all M18 battery chemistries

Compatible With:

– Milwaukee M12 FUEL Surge Hydraulic Impact Drivers, Impact Wrenches, Ratchets

– M12 FUEL Oscillating Multi Tools, Saws, Cut-Off Tools, Rotary Tools

– M12 FUEL Drills, Drivers, Right Angle Drills, Dremels, Sanders

– M12 Sub Compact Drills, Impact Drivers, Hackzalls, Multi Tools, Radio

– All other Milwaukee M12 batteries & power tools


– Voltage Conversion: 18V to 12V

– Housing Material: ABS plastic

– Battery Platforms: M18 REDLITHIUM CP, XC, HD, HO, FUEL

– Dimensions: 4.5 x 2.2 x 1.1 in

– Weight: 5 oz

Power your expanding collection of M12 tools using the beefier battery supply from your M18 lineup. The EID M18 to M12 adapter is a must-have accessory that unlocks game changing runtime and performance gains in a small, simple package. Order now to maximize your Milwaukee investment!


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