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Milwaukee 48-11-1865 M18 REDLITHIUM HIGH OUTPUT XC 6 Ah Lithium-Ion Battery

  • Based on 1,930 reviews
Condition: New
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$89.00 Why this price?
Holiday Deal · 11% off was $99.99

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As low as $14.83 / mo
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This item's return window has been extended for the holiday season: Returnable until Jan 31, 2026

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

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Availability: Only 10 left in stock, order soon!
Fulfilled by Globally Sourcing

Arrives Dec 24 – Dec 28
Order within 15 hours and 57 minutes
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Features

  • 50% more runtime, most work/charge of any power tool battery
  • 50% more power to replace 15Amp corded tools & runs 50% cooler
  • Fully compatible with the M18 System, featuring over 150+ tools

Description

The M18 REDLITHIUM HIGH OUTPUT XC 6.0Ah Battery provides 50% more power, runs 50% cooler, and delivers 50% more runtime compared to standard lithium-ion batteries. Fully compatible with over 150 Milwaukee M18 tools.

Number of Batteries: 1 Lithium Ion batteries required. (included)


Brand: Milwaukee


Battery Cell Composition: Lithium Ion


Battery Capacity: 6 Amp Hours


Recommended Uses For Product: Tools


Manufacturer: ‎Milwaukee


Part Number: ‎MIL-48-11-1865


Item Weight: ‎1.5 pounds


Product Dimensions: ‎5.5 x 3.75 x 3.5 inches


Item model number: ‎MIL-48-11-1865


Batteries: ‎1 Lithium Ion batteries required. (included)


Is Discontinued By Manufacturer: ‎No


Size: ‎1 Count (Pack of 1)


Color: ‎Black


Material: ‎Plastic


Power Source: ‎Battery


Voltage: ‎18


Item Package Quantity: ‎1


Batteries Included?: ‎Yes


Batteries Required?: ‎No


Battery Cell Type: ‎Lithium Ion


Battery Capacity: ‎6 Amp Hours


Warranty Description: ‎3 year


Date First Available: August 30, 2018


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Dec 24 – Dec 28

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


  • High-performance battery.
Great battery! Holds a charge well and powers my tools for a long time. Fits perfectly in all my M18 Milwaukee tools and charges quickly. Definitely reliable for heavy use.
Reviewed in the United States on October 12, 2025 by Amazon Customer

  • Big boy battery
Very good battery at a good price, has a long runtime, will charge in about an hour, fits all tools, and is not heavy despite its size.
Reviewed in the United States on August 4, 2025 by AbnerG

  • Real battery
Battery is legit real deal Milwaukee will be buying again sometime
Reviewed in the United States on December 8, 2025 by Luke

  • Just as expected.
It works and it was just like the other one I have. It fits in my charger and holds a charge.
Reviewed in the United States on May 11, 2025 by D. Witmer

  • Real
Real Milwaukee battery
Reviewed in the United States on November 13, 2025 by Judy kray

  • Good battery
This is a good battery but very heavy as should have expected, shipping and price a bonus!
Reviewed in the United States on July 20, 2024 by paul33

  • Great Purchase
Products are exactly as described and with the fast delivery you cannot beat it.
Reviewed in the United States on September 3, 2025 by daryl park

  • It has the power!
SO much stronger than the smaller batteries that come with the drill and impact wrench! Only used a couple of times with the M18 120/500CFM leaf blower but So far, so good.
Reviewed in the United States on July 9, 2025 by J D

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