Slickdeals is community-supported.  We may get paid by brands for deals, including promoted items.
Heads up, this deal has expired. Want to create a deal alert for this item?
expired Posted by TenseWinter4345 • Feb 24, 2025
expired Posted by TenseWinter4345 • Feb 24, 2025

Woot App: Milwaukee M18 18V 12Ah REDLITHIUM FORGE Battery

+ Free S&H w/ Amazon Prime

$155

$170

8% off
Woot!
48 Comments 21,873 Views
Visit Woot!
Good Deal
Save
Share
Deal Details
Tip: Open the Woot app and under Daily Deals, scroll down to "Milwaukee Tool Power!" in order to find this item.

Woot! (link for reference) has via the Woot! App (iOS or Android): Milwaukee M18 18V 12Ah REDLITHIUM FORGE Battery on sale for $169.99 - $15 (discount will automatically apply at final stage of checkout) = $154.99. Shipping is free for Amazon Prime Members (you must log in with your Amazon account and select a shipping address for Woot to apply free shipping) or $6 per order.
  • Note: Must view/purchase deal in the Woot app to unlock the "Spend $100, save $15 on purchases in the Woot app!" savings.
Thanks to Community Member TenseWinter4345 for sharing this deal.

Editor's Notes

Written by jimmytx | Staff

Original Post

Written by TenseWinter4345
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Tip: Open the Woot app and under Daily Deals, scroll down to "Milwaukee Tool Power!" in order to find this item.

Woot! (link for reference) has via the Woot! App (iOS or Android): Milwaukee M18 18V 12Ah REDLITHIUM FORGE Battery on sale for $169.99 - $15 (discount will automatically apply at final stage of checkout) = $154.99. Shipping is free for Amazon Prime Members (you must log in with your Amazon account and select a shipping address for Woot to apply free shipping) or $6 per order.
  • Note: Must view/purchase deal in the Woot app to unlock the "Spend $100, save $15 on purchases in the Woot app!" savings.
Thanks to Community Member TenseWinter4345 for sharing this deal.

Editor's Notes

Written by jimmytx | Staff

Original Post

Written by TenseWinter4345

Community Voting

Deal Score
+18
Good Deal
Visit Woot!

Price Intelligence

Model: Milwaukee M18 18V Lithium-Ion 12.0 Ah Battery Pack

Deal History 

Sale Price
Slickdeal
  • $NaN
  • Today

Current Prices

Sort: Lowest to Highest | Last Updated 7/18/2025, 07:15 AM
Sold By Sale Price
Ace Hardware$299
Blain Farm & Fleet$299

Leave a Comment

Unregistered (You)

Top Comments

MaroonCemetery970
2 Posts
10 Reputation
The Milwaukee M18 12 Forge battery offers several advantages over the 12HO (High Output) battery:

Increased Power Output: The Forge delivers up to 50% more power than the 12HO, making it better suited for high-demand applications24.

Faster Charging: It can charge to 80% in just 35 minutes when used with a compatible supercharger, significantly reducing downtime compared to the 12HO4.

Enhanced Cooling Technology: The Forge uses "Cool-Cycle" active cooling, which allows it to run cooler and maintain performance during extended use4.

Improved Design: It features a more compact and lightweight design with advanced tabless pouch cell technology, improving efficiency and portability2.

These features make the Forge ideal for professionals needing maximum power and efficiency.

47 Comments

Sign up for a Slickdeals account to remove this ad.

Feb 24, 2025
2,252 Posts
Joined Dec 2012
Feb 24, 2025
fiveohfour
Feb 24, 2025
2,252 Posts
Someone fill me in please. What's the difference between the 12.0 HO & the FORGE? Both have similar watt hours? Which is more expensive now? Same size ? Pros and cons? Thanks so much for the info, I had no idea a 12.0 forge existed and now I feel like I'm standing at the bathroom stall and feeling rather small
1
Feb 24, 2025
234 Posts
Joined Sep 2017
Feb 24, 2025
jeffde
Feb 24, 2025
234 Posts
Quote from fiveohfour :
Someone fill me in please. What's the difference between the 12.0 HO & the FORGE? Both have similar watt hours? Which is more expensive now? Same size ? Pros and cons? Thanks so much for the info, I had no idea a 12.0 forge existed and now I feel like I'm standing at the bathroom stall and feeling rather small
Basically the forge says forge and is better. I guess if you're sawing it saws harder and better. And if you're doing some SDS destruction it'll destruct harder. Also it says forge
3
4
Feb 24, 2025
2 Posts
Joined May 2022
Feb 24, 2025
MaroonCemetery970
Feb 24, 2025
2 Posts
Quote from fiveohfour :
Someone fill me in please. What's the difference between the 12.0 HO & the FORGE? Both have similar watt hours? Which is more expensive now? Same size ? Pros and cons? Thanks so much for the info, I had no idea a 12.0 forge existed and now I feel like I'm standing at the bathroom stall and feeling rather small
The Milwaukee M18 12 Forge battery offers several advantages over the 12HO (High Output) battery:

Increased Power Output: The Forge delivers up to 50% more power than the 12HO, making it better suited for high-demand applications24.

Faster Charging: It can charge to 80% in just 35 minutes when used with a compatible supercharger, significantly reducing downtime compared to the 12HO4.

Enhanced Cooling Technology: The Forge uses "Cool-Cycle" active cooling, which allows it to run cooler and maintain performance during extended use4.

Improved Design: It features a more compact and lightweight design with advanced tabless pouch cell technology, improving efficiency and portability2.

These features make the Forge ideal for professionals needing maximum power and efficiency.
1
Feb 24, 2025
5 Posts
Joined Jan 2023

This comment has been rated as unhelpful by Slickdeals users.

Feb 24, 2025
2,252 Posts
Joined Dec 2012
Feb 24, 2025
fiveohfour
Feb 24, 2025
2,252 Posts
Quote from jeffde :
Basically the forge says forge and is better. I guess if you're sawing it saws harder and better. And if you're doing some SDS destruction it'll destruct harder. Also it says forge
🤣 I love it thanks
Feb 24, 2025
2,252 Posts
Joined Dec 2012
Feb 24, 2025
fiveohfour
Feb 24, 2025
2,252 Posts
Quote from FeistyHamster717 :
Puts out more power and charges faster. It is the future of basically getting a new battery type every year because it is basically a subscription service at this point.
I would say that Forge is better but haven't seen any longterm tests yet.
I want to reiterate that these batteries are of little added benefit unless you're using Milwaukee tools with the HD designation on the box, like the miter saw, big grinders, blowers etc. it won't just supercharger your impact wrench or small circular saw with "50% more power"

Milwaukee says the 6.0 forge has "the power" of the 12.0 HO.. It has the same power NOT CAPACITY. Its purpose is to deliver adequate power consistently throughout its charge. But as stated it still "only" has 6 amp hours of capacity. The 12.0 has 12 amp hours.

Translation: so don't expect a capacity/run time boost over the regular 12.0ah & remember only the HD tier tools have the ability to tax the old 9.0 HD, let alone the 12 HO, let alone the forge. Don't be disappointed if you don't "feel" a difference in the majority of your tools
Last edited by fiveohfour February 24, 2025 at 09:24 AM.
Feb 24, 2025
336 Posts
Joined Nov 2006
Feb 24, 2025
AUSSIE2U
Feb 24, 2025
336 Posts

Our community has rated this post as helpful. If you agree, why not thank AUSSIE2U

Quote from fiveohfour :
Someone fill me in please. What's the difference between the 12.0 HO & the FORGE? Both have similar watt hours? Which is more expensive now? Same size ? Pros and cons? Thanks so much for the info, I had no idea a 12.0 forge existed and now I feel like I'm standing at the bathroom stall and feeling rather small
The new Forge batteries use tabless cells like Teslas. These can discharge tremendous amperage to the tools that require them, and stay cool doing it. It's like converting a golf cart to lithium from lead acid. You need the highest discharge lithium cells that don't heat up or you'll soon find that golf cart stopping on hills to cool down.
1

Sign up for a Slickdeals account to remove this ad.

Feb 24, 2025
9 Posts
Joined May 2013
Feb 24, 2025
wojciechw
Feb 24, 2025
9 Posts
Plus the old 12ah HO batteries are well known to brick themselves, just do some searching online and you can find a lot of bad reviews.
1
Feb 24, 2025
5 Posts
Joined Jan 2023
Feb 24, 2025
FeistyHamster717
Feb 24, 2025
5 Posts
Quote from MaroonCemetery970 :
The Milwaukee M18 12 Forge battery offers several advantages over the 12HO (High Output) battery:

Increased Power Output: The Forge delivers up to 50% more power than the 12HO, making it better suited for high-demand applications24.

Faster Charging: It can charge to 80% in just 35 minutes when used with a compatible supercharger, significantly reducing downtime compared to the 12HO4.

Enhanced Cooling Technology: The Forge uses "Cool-Cycle" active cooling, which allows it to run cooler and maintain performance during extended use4.

Improved Design: It features a more compact and lightweight design with advanced tabless pouch cell technology, improving efficiency and portability2.

These features make the Forge ideal for professionals needing maximum power and efficiency.
I would also say with a caveat some tools can't even take advantage of the extra speed and torque. But with the new charger those Forge batteries charge way faster. So it really helps out the gardening equipment line because they suck power and if you have multiple jobs in a day or long jobs you will need that extra fast charge time.
Feb 24, 2025
2,252 Posts
Joined Dec 2012
Feb 24, 2025
fiveohfour
Feb 24, 2025
2,252 Posts
To reiterate what someone shared, but from independent sources instead of direct from Milwaukee, fwiw.

The Milwaukee M18 12.0 High Output battery and the M18 12.0 Forge battery differ primarily in their cell technology and performance. The Forge battery features advanced pouch cells that provide higher energy density, faster charging, and improved cooling, allowing for longer run times under heavy loads compared to the standard High Output battery.


The M18 12.0 High Output battery has a watt-hour rating of 216 Wh, while the M18 12.0 Forge battery also has a similar watt-hour rating but benefits from enhanced efficiency and performance due to its design. Overall, the Forge battery is designed to deliver more power and longer usage times in demanding applications.

The forge charges 25% faster than the High Output with the NEW supercharger only, but the old supercharger charges the HO's and the Forge line silly fast already

Worth noting. The 8.0 forge like the 8.0 high output before it seems to be a bit of a sweet spot size, capacity, and weight wise. It has the same power output as the 12.0 forge, just with lower runtime, all while being more compact and LIGHTER. Great for BIG saws and any of the HD high Demand tools that you have to hold to use (vs say a dry vac that inhales power faster than any other tool but having a massive battery in it is nbd because you're not carrying it.

Personally, I used the 3.0 High output and the 8.0 High output almost exclusively. I rarely used the 12's and if I wasn't in hurricane country I'd have zero excuse to own them
Last edited by fiveohfour February 24, 2025 at 09:31 AM.
Feb 24, 2025
2,252 Posts
Joined Dec 2012
Feb 24, 2025
fiveohfour
Feb 24, 2025
2,252 Posts
Thanks to everyone who helped clear things up
Last edited by fiveohfour February 24, 2025 at 06:48 AM.
Feb 24, 2025
5,623 Posts
Joined Jul 2014
Feb 24, 2025
FHRITP
Feb 24, 2025
5,623 Posts
fake batteries...i wouldnt trust these from woot
2
Feb 24, 2025
4,598 Posts
Joined Jun 2008
Feb 24, 2025
AndrewinMD
Feb 24, 2025
4,598 Posts
I have both the 12.0 and the 8.0 (not Forge) and much prefer the 8.0 for the weight. While the 12.0 runtime is great, it's just an unwieldy beast with everything -- I use them with my blower, circular saw, and weed whacker. I grab the 8.0 more often and will be selling the 12.0 with the weed whacker shortly, since the weed whacker is awful.

As near as I can tell, it looks like the 12.0 Forge is about .4 lbs lighter than the 12.0HO or about 11% lighter. Not bad.
1
Feb 24, 2025
1,083 Posts
Joined Jul 2015
Feb 24, 2025
darius11
Feb 24, 2025
1,083 Posts
If this truly runs cooler, I can see this paying for itself quickly if you're using the concrete saw. Cutting through cinder block (much less solid concrete) quickly overheats HO batteries and you can burn through 4-5 batteries in 10 minutes of cutting with the dust control (water) on even when cutting very slowly.

Sign up for a Slickdeals account to remove this ad.

Feb 24, 2025
903 Posts
Joined Apr 2008
Feb 24, 2025
bargainperson
Feb 24, 2025
903 Posts
Anyone purchased batteries from woot before, are they genuine? I saw a comment about getting fakes that stopped me from placing an order. Also 10$/ah seems to be the norm, but this being a forge that does not apply?

Leave a Comment

Unregistered (You)

Popular Deals

View All

Trending Deals

View All