Internet #204678672

Model #49-24-2310

M12 12-Volt Lithium-Ion Cordless Power Source (Tool-Only)

  • 2.1-amp powered USB port charges all portable electronic devices
  • Powers All M12 Heated Gear
  • Compatible With All M12 Batteries
  • See More Details

Frequently Bought Together


Product Overview

M12 System: portable productivity, trade focused, system wide.

M12 System

Power and portability in a size that outperforms the competition

A wide selection of M12 cordless tools and heated gear lined up

Lightweight and Ergonomic

For easy portability and faster operation

A wide selection of M12 cordless tools and solutions lined up

Unrivaled Performance in a Compact Form

Transformed inefficient manual tools into advanced battery-powered workhorses

Man wearing glove uses an M12 FUEL 1/2" Drill Driver to drill into wood beam

Portable Productivity

The perfect balance of size and performance to improve your productivity with portable solutions

Three trade professionals in safety gear on red background

Trade Focused

Milwaukee is dedicated to the trades - providing professional solutions on one platform

Milwaukee's power tools are part of the M12 System, featuring over 100 cordless solutions.

System Compatibility

Tools on the M12 System – Fit all M12 Batteries

M12 System tools offer high performance motors, REDLINK intelligence, and REDLITHIUM batteries.

M12 Cordless Tool Technology

Provides tradesmen with unmatched levels of performance, protection, and productivity.

Electrician cutting conduit overhead.


M12 Sub-Compact Band Saw

A man works on jobsite with portable RADIUS Site Light on table nearby.

Plumbing and Mechanical

Drain professionals, plumbers, and facility maintenance crews will be able to work faster when clearing clogs

A man wearing gloves uses an M12 FUEL Oscillating Multi-Tool to cut drywall.


M12 woodworking tools are compact and portable for all jobsite applications

Man uses M12 FUEL 1/2” Stubby Impact Wrench w/ Pin Detent to remove lug nut.


Automotive tools provide durability and power in a size that outperforms the competition

Man wearing a M12 Heated TOUGHSHELL Jacket lit up to show heated zones

Heated Gear

M12 Heated jackets uses carbon fiber heating elements to create and distribute heat to your chest, back and front hand pockets.

Electrician uses M12 ROCKET Tower Light on a service call.


Sets up in seconds to a max height of 7’ and collapses to less than 4’ for easy transportation and storage

The M12 Power Source, compatible with all M12 Battery Packs, features a 2.1-amp powered USB port that charges tablets, smart phones, mp3 players, and other portable electronic devices. This smart-charge port identifies the electronic device being charged; delivering fast, safe charging. The adapter features an on-board fuel gauge, and is compatible with all M12 Heated Gear, providing up to 6 hours of continuous heat on a single charge. (Battery sold separately).

Info & Guides

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Product Depth (in.)
Product Height (in.)
Product Width (in.)


Actuated Tool Type
Color Family
Tools Product Type
Power Tool

Questions & Answers


Does it work for heat jacket too?

Asked by 3392 November 3, 2018

The connect on this unit just has a USB connector. If your heat jacket has a USB connector to heat the jacket it would work. The heat jacket I have has a round plug in connector so this wouldn't work on my jacket.

Is it possible to charge m12 batteries via the usb port, or is it for output only?

Asked by Curious1 May 3, 2016

This is for output only, if you want to use it to charge the battery, then you need to purchase part number 48-59-1201 Compact Charger and Power Source.

is a battery included

Asked by chris November 23, 2014


Does it have an on button or is it always on as soon as you plug in the battery

Asked by Tino October 17, 2016

you press the black button, and that turns it on, at same time will tell you the level of charge of the battery.

Does the M12 power source have any other ports besides a USB port?

Asked by Dave April 19, 2016

yes, it has a DC out on the side. I beleive this was designed for the heated jackets, but can be used for anything 9v.

do you carry these in stock at stores?

Asked by jd November 2, 2020

yes working great

What size is the 12V port on the M12 Power Source? These coaxial type connections are sized by t...

Asked by Hogie1207 June 18, 2017

Since no one was able to answer my question I have endeavored to find out myself. I wrote to Milwaukee but have not gotten an answer yet. However, while at our Amateur Radio Field Day event this weekend I found a coaxial DC connector that was the correct size to plug into the power source. I measured that connector with a caliper to find that the connector is a 2.1mm x 5.5 mm x 10mm. That is to say the inner diameter is 2.1mm, the outer diameter of the barrel is 5.5mm and the length of the barrel is about 10mm to 11mm. I've attached a photo of a coaxial power connector and illustrated the dimensions on it.

how can I go about buying this item through Home Depot if the website says that it's not available online?

Asked by me June 8, 2017

They carry in stores now

You are going to have more available to sell

Asked by Lehi00 March 8, 2017

They said the end of March.

Can you have the heat on in a sweater and charge a cell phone at the same time?

Asked by Brandon November 14, 2015

Yes you can. It uses up your battery charge a bit faster though (obviously).

M12 12-Volt Lithium-Ion Cordless Power Source (Tool-Only) - page 2

Customer Reviews

  • 107 Customer Reviews
  • 4.5 out of 5 stars overall
94% of customers recommended.
Overall Ratings
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Purchased the Milwaukee Cordless Power Source as a backup power source using the extra 12v batter...
Purchased the Milwaukee Cordless Power Source as a backup power source using the extra 12v battery that came with my Milwaukee Power Ratchet. Hooked up my cable and battery and I have back up power for my iPhone and iPad. Works great very satisfied with the power. Simple to use Highly recommend.
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Great product "IF"! This is a great product if you already have the battery and charger from yo...
Great product "IF"! This is a great product if you already have the battery and charger from your Milwaukee tools. I have been looking for a battery pack to carry with me during the day to charge my cell phone and tablet. After seeing a video on YouTube I did my research and this fit the build! I already had a few tools, M12 batteries and a charger so I basically have a battery charger for $30! My only complaint is this unit doesn't charge the battery, you have to use your normal battery charger that comes with any Milwaukee tool set. (Not a bare tool). I also purchased a very short phone cord to reduce bulk while carrying, 12" on Amazon. I have had no problem in the few weeks I have began using it.
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M12 Power Source
pretty sweet device ! Charges my iPhone6 twice, and the M12 batteries go with my M12 power tools so makes my life a lot easier so i can interchange the batteries. Instead of carrying different kinds. CON-another USB. But main purpose is for the jacket so, that's my next buy.
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Really nice to have a phone charger with you when...
Really nice to have a phone charger with you when you need it Also all those m12 become phone chargers now.
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Rating provided by a verified purchaser...
Rating provided by a verified purchaser
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Works exactly as described...
Works exactly as described
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Good for Milwaukee heating jackets
Good for Milwaukee heating jackets
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It is a USB charger that works off my M12...
It is a USB charger that works off my M12 batteries. Super convenient.
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