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Milwaukee M18 REDLITHIUM Forge HD12.0 Battery Pack

  • Based on 57 reviews
Condition: New
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$229.99 Why this price?
Holiday Deal · 8% off was $249.00

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This item's return window has been extended for the holiday season: Returnable until Jan 31, 2026

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Availability: Only 2 left in stock, order soon!
Fulfilled by SupplyDeals

Arrives Thursday, Jan 8
Order within 13 hours and 8 minutes
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Features

  • 50% More Power vs HIGH OUTPUT HD12.0 COOL-CYCLE Active Cooling System provides high-speed cooling for less downtime with COOL-CYCLE capable chargers 35min Supercharge to 80% with the M18 Dual Bay Simultaneous Super Charger Longest life for the most recharges and best performance over the life of the pack
  • REDLITHIUM FORGE provides the most powerful, fastest charging, and longest life batteries within REDLITHIUM Fully compatible with the M18 system, featuring 250+ tools Patented ingress coating provides increased protection to maximize active cooling through an upgraded venting design

Description

The MILWAUKEE M18 REDLITHIUM FORGE HD12.0 Battery Pack delivers 50% more power than the HIGH OUTPUT 12.0, high-speed cooling for less downtime in high-demand applications, 35-minute supercharge to 80%, and the longest life vs REDLITHIUM batteries. REDLITHIUM FORGE are Milwaukee's most powerful, fastest charging, and longest-life batteries. The M18 REDLITHIUM FORGE HD12.0 delivers 12 amp hours of runtime with 50% more power than the HIGH OUTPUT 12.0, providing optimal power and runtime for demanding applications. The M18 REDLITHIUM FORGE HD12.0 is COOL-CYCLE capable. COOL-CYCLE Active Cooling System provides high- speed cooling for less downtime. Patented ingress coating provides increased protection to maximize active cooling through an upgraded venting design. The high-speed cooling feature works with M18 chargers that have COOL-CYCLE capability. When paired with the M18 Dual Bay Simultaneous Super Charger, this battery charges in just 35 minutes to 80%, getting you back to work faster than ever before. This lithium-ion battery has the longest life, the most recharges, and the best performance over the life of the battery. It is also designed with resistant housing for increased protection against exposure to common oils, greases, and solvents. Built-in REDLINK Intelligence protects the battery from overloads, preventing you from damaging your cordless power tools in heavy-duty situations. Fully compatible with 250+ M18 solutions.

Number of Batteries: 1 Lithium Ion batteries required.


Brand: Milwaukee


Battery Cell Composition: Lithium Ion


Battery Capacity: 12 Amp Hours


Recommended Uses For Product: Power Tool


Product Dimensions: 7.76 x 7.28 x 3.5 inches


Item Weight: 3.47 pounds


Item model number: 48-11-1813


Batteries: 1 Lithium Ion batteries required.


Date First Available: March 26, 2025


Manufacturer: Milwaukee


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Jan 8

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Great battery!
Worth the money!
Reviewed in the United States on December 8, 2025 by Jeremi

  • Long lasting battery
Amazing battery. Outlasts all my other ones. It will take a while to drain. My Milwaukee blower uses the most power and I can blow my front/back lawn and garage before it starts to run low.
Reviewed in the United States on November 9, 2025 by Daniel

  • Great product.
This Battery Is Awesome. Works great and gives a lot of run time. I recommend it highly.
Reviewed in the United States on November 14, 2025 by Gary K.

  • Very Nice . . .
Four of these last longer in heavy duty M18 tools for lawn, leaves, and snow which are heavy duty jobs . . . The HD6.0 and HD8.0 battery packs are better suited for the M18 Tools requiring single battery packs . . .
Reviewed in the United States on November 17, 2025 by KI Time

  • Worth the Price
The biggest and most powerful battery for your portable equipment. This battery will run constantly full speed for around 30 minutes but will take several hours to charge back to full capacity. It was a bit expensive but definitely worth the purchase if you don’t want the hassle or having to keep changing out batteries. ... show more
Reviewed in the United States on December 16, 2025 by Denise

  • Milwaukee M18 REDLITHIUM Forge HD12.0 Battery Pack - Fast charging and cooling.
Excellent price, warp speed shipping, as described and excellent packaging.
Reviewed in the United States on November 14, 2025 by Marcus

  • Awesome
Awesome ‘nuf said
Reviewed in the United States on December 8, 2025 by Amazon Customer

  • good for grinder
works great for the grinder expensive tho
Reviewed in the United States on October 12, 2025 by Dolphus haney

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