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M12 and M18 12-Volt/18-Volt Lithium-Ion Multi-Voltage Rapid Battery Charger

  • Charges all M18 & M12 Batteries - Full system compatibility
  • 40% faster chargers than standard chargers
  • Fully compatible with the M18 system, featuring over 200+ tools
  • See More Details

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Product Overview

M18 REDLITHIUM Battery Guide

M18 REDLITHIUM Batteries

Find the best M18 REDLITHIUM Battery to fit your needs.

Milwaukee 18 volt batteries offer more power, more runtime and longer battery life.

More Power, Runtime, and Battery Life

M18 REDLITHIUM Batteries are available in Compact, Extended Capacity, and High Demand

The Milwaukee M18 System offers over 200 cordless tools on one battery platform.

System Compatibility

All M18 Tools fit M18 Batteries

Four Milwaukee tools utilizing M18 REDLITHIUM HIGH OUTPUT Batteries on various jobsites

M18 REDLITHIUM HIGH OUTPUT Batteries

Deliver more power and run cooler, while providing more run-time and faster charging

Milwaukee M18 REDLITHIUM CP and HIGH OUTPUT CP batteries are perfect for light demand applications.

M18 CP Batteries

M18 REDLITHIUM HIGH OUTPUT CP Batteries provide increased performance and runtime for M18 tools

M18 REDLITHIUM High Demand and HIGH OUTPUT HD batteries are perfect for heavy demand applications.

M18 XC Batteries

M18 REDLITHIUM HIGH OUTPUT HD Batteries provide increased performance and runtime for M18 tools

Graphic of all the parts of the REDLITHIUM Battery Pack

Advanced Lithium-Ion Technology

Last longer, think faster, and work harder than all other professional Lithium-Ion batteries.

Graphic of all the parts of the REDLITHIUM Battery Pack

Advanced Lithium-Ion Technology

Last longer, think faster, and work harder than all other professional Lithium-Ion batteries.

Two Milwaukee REDLITHIUM battery cells on white background

Lithium-Ion Cell Technology

Milwaukee was the first to introduce cell technology - providing users with more power, run-time, and life.

Internal view of M18 REDLITHIUM Battery Pack with three rows of five battery cells

M18 REDLITHIUM Battery Pack Design

Protects against harsh jobsite conditions through unique, patented designs.

Milwaukee REDLITHIUM Battery's Microchip on a gray background

Milwaukee Battery Electronics

Integrated electronics monitor individual cells, provide temperature and overload protection and optimize performance

M18 REDLITHIUM battery charging on a Milwaukee dual voltage charger in tool storage chest.

Intelligent Charging

Protects the pack in abusive situations, provides optimum performance and monitors cells for maximum life

Milwaukee protects your investment by backing all their M18 Batteries with warranties.

Battery Warranties

HD and XC Batteries = 3 Year Warranty. CP Batteries = 2 Year Warranty.

The MILWAUKEE M18 & M12 Rapid Charger charges battery packs up to 40% faster, reducing user downtime and maximizing user productivity. The battery charger accepts all Milwaukee M18 and M12 batteries, providing a charging upgrade for both systems. The charger features REDLINK Intelligence and communicates directly with batteries to monitor cell voltage, temperature, and charge status to optimize the performance and extend the life of the pack. As an added level of communication, the charger indicates when the battery reaches an 80% charge, providing users with the confidence that a substantial amount of work can be completed without having to wait for a full charge.

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.

Specifications

Dimensions

Product Height (in.)
2.940
Product Length (in.)
6.8 in
Product Width (in.)
6.750

Details

AC\DC
AC
Alarm
No
Battery Test Function
Yes
Charger Included
Charger Included
Color Family
Red
Compatibility
M12 & M18
Cord Length (ft.)
6
Number of batteries charged at once
Multiple
Package Quantity
1
Power Tool Accessory Type
Battery Charger
Returnable
90-Day
Tools Product Type
Power Tool
Voltage (volts)
18

Warranty / Certifications

Certifications and Listings
CSA Listed,ETL Listed,UL Listed

Questions & Answers

21Questions17Answers

Is there suppose to be a high pitched humming noise when you plug the charger in?

Asked by Dbone November 5, 2020
1
Answer

Mine does that too. It seems to be normal for most chargers. I hope this helps!

will this work with my xc 6.0

Asked by metard August 31, 2020
2
Answers

Yes

I just purchsaed the rapid charger along with the 12.0 battery and I noticed that it gets very hot Is this normal

Asked by Hec91 July 25, 2020
1
Answer

Yes the batteries on the Milwaukee rapid chargers seem to get hotter than a normal or slow charger but I don't worry as I've had my Rapid charger for over a year an have had no issue's with Batteries or charger

Whine

Asked by Yukon4x4 July 14, 2020
2
Answers

So far so good, I'm happy with it

HEAT AND HIGH PITCH NOISE. I have a brand new unit with the 8.0 battery. Thirty seconds after it ...

Asked by JohnG May 19, 2020
1
Answer

Hello JohnG, we are sorry to hear about your charger. Could you send us an email at socialmedia@milwaukeetool.com, so we can look into this?

Why will my 12 volt 4ah battery not fit into the charger?

Asked by TownDestroyer May 18, 2020
1
Answer

You need to warm it up before you shove the battery in. If it's cold try blowing on it first.

Does this have a built-in fan unlike the older chargers?

Asked by Robert March 18, 2020
3
Answers

No. This charger relies on convection to cool the internal electronics necessitating a clear airway for circulation.

how does an M18 rapid charger works in theory. Would the frequency increases

Asked by Jerry February 17, 2020
2
Answers

Frequency is set by the power company. The freqency at which the power station generator turns is always 60hz in the United States. Frequency only applies to AC and because batteries are DC, frequency is irrelevant.

I heard that rapid charging a battery will shorten its life. So my question is, will charging an ...

Asked by Leo October 23, 2019
2
Answers

The rapid charger does not change the life of any battery.

Milwaukee electric what is the max chargung speed/current for a single high output battety. Is youre quotted response of 6 and 9amps for 12v and 18v

Asked by Fee October 20, 2019
2
Answers

No, it does not charge two simultaneously. Voltage and amperage is not also known as wattage. Wattage divided by voltage equals amperage. It charges my 12.0 HO in about 2 hours. Super charger does it in an hour. Supercharger should charge everything faster than the rapid, rapid faster than standard.

M12 and M18 12-Volt/18-Volt Lithium-Ion Multi-Voltage Rapid Battery Charger - page 2

Customer Reviews

  • 4.7
    out of 266 reviews
  • 94% recommend this product
Filter by:
Showing 1-10 of 266 reviews
It dose what it says it will do faster charging for your battery
It dose what it says it will do faster charging for your battery
by Dennis
1 person found this helpful
This charger charges insanely fast. Definitely recommend this product. I use the circular saw for...
This charger charges insanely fast. Definitely recommend this product. I use the circular saw for deck building at my small business, it well passes the standard I had thought it would have had.
by Mel32
1 person found this helpful
I have to admit that the charge time on this was pretty fast. It seemed to be faster than other b...
I have to admit that the charge time on this was pretty fast. It seemed to be faster than other brand’s battery and charger systems I have used in the past. It does seem to make a buzzing/humming noise while its charging the battery but this isn’t that noticeable unless you’re right next to the charger.
by Roadrunner
Faster Charging for M12 and M18 Batteries!
I'm really glad Milwaukee is finally in the rapid charger business. It seems like the competition has had an edge in this area for a while, and Milwaukee finally stepped up one of the few areas they were lagging in. Just a quick note up front, this is a SEQUENTIAL charger, not a parallel charger, just like the original M12/M18 multi-voltage charger. If you want a parallel charger, take a look at Milwaukee's new Rapid Charge Station, which is essentially three of these chargers that work in parallel. The form factor of the new rapid charger is almost exactly the same as the original M12/M18 multi-voltage charger. That's good news for anyone who wants to replace their original charger in an M18 tool case - the new rapid charger fits just fine. The keyhole mounts on the back are the same size and spacing as the older model, so if you've got one mounted to the wall already, you can just replace it with the rapid charger without changing out any hardware. The new design has a lot more vent area than the old one, and Milwaukee has moved most of them from the bottom up to the sides, which allows for more airflow. I don't think the charger is actively cooled with a fan though. I can hear a faint hum/whir when I hold it up to my ear while a battery is charging, but I can't feel any forced air coming out of the vents. The rapid charger also has a new LED status indicator in addition to all the old ones. Now there's an 80% charge indication in the form of a flashing green light, which lets you know when you can get a substantial amount of work done with and almost charged battery, in case you're waiting on it for completion of a project. There's also the standard solid red for charging, solid green for charged, flashing red for waiting to charge, fast flashing red for waiting to cool, and flashing green/red for a defective battery. Luckily I've never encountered the last two states. As for faster charge times, I'm getting my 1.5 Ah M12 batteries fully charged in about 22 minutes, which is down from approximately 30 minutes. That's 27% faster, which is close to, but not quite at Milwaukee's "up to 40% faster" claim. Although I wasn't watching the batteries like a hawk, so it's possible it hit the 40% faster target of fully charged at 18 minutes. I checked at 14.5 minutes and it was blinking the 80% status, which is actually right on track for fully charged at 18. The 2Ah M18 battery I tested was fully charged in 25 minutes, and the 4Ah M12 battery was 80% charged at 45 minutes, and fully charged after an hour. Once again, I wasn't sitting at the charger unblinking with a stopwatch, so all times may actually be faster than I reported.
by Doresoom
10 people found this helpful
I enjoy a quick a charging charger which is my...
I enjoy a quick a charging charger which is my first
by Sacha
I never usted before but now I think I will...
I never usted before but now I think I will be using this tools look like are better then any others
by HomeDepotCustomer
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
Had it one week and quit charging. Will take it back to home depot for an exchange.
Had it one week and quit charging. Will take it back to home depot for an exchange.
by defective
Response from Milwaukee ToolApr 6, 2021
Hello, this is Will with Milwaukee Tool. defective, thank you for your review. I am sorry to hear about your frustrations with your Milwaukee M12 and M18 12-Volt/18-Volt Lithium-Ion Multi-Voltage Rapid Battery Charger. We'd value the opportunity to learn more about your frustrations with your Milwaukee Tool, and to provide you with support. Please feel free to contact us directly at socialmedia@milwaukeetool.com. It will be our pleasure to provide support once we have received your correspondence. Thank You
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
Showing 1-10 of 266 reviews