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Internet # 339037756

Model # 48-11-1852B

Store SKU # 1014866866

M18 18-Volt Lithium-Ion XC Extended Capacity 5.0 Ah Battery Pack (2-Pack)

Contains 10 Amp Hour
$199.00
($19.90 /amp hour)
Was $269.00
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  • Compatible With All M18 Cordless Power Tools
  • Delivers 2.5X more life than standard lithium
  • Recharges in 90 minutes or less
  • View More Details

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Return this item within 90 days of purchase.

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Product Details

About This Product

Delivers up to 2.5X more run-time, 20% more power and 2X more life than standard lithium-ion batteries. The M18 REDLITHIUM XC 5.0 Extended Capacity Battery Pack features superior pack construction, electronics, and performance to deliver more work per charge and more work over the life of the pack when compared to competitors. The M18 REDLITHIUM XC 5.0 Battery features an advanced design, protecting the pack against harsh jobsite environments. This protection routes water away from the electronics and out of the battery pack, extends run-time and life by minimizing heat, and prevents pack failures from vibration or drops. This unique to Milwaukee design also allows the battery to operate in extreme cold weather conditions (below OoF/-18oC). Managed by Milwaukee's exclusive REDLINK Intelligence, the battery features overload protection to prevent you from damaging your cordless power tools in heavy-duty situations, while the discharge protection prevents cell damage. It also provides full system compatibility with 250+ M18 cordless solutions. Upgrade to the M18 REDLITHIUM XC 5.0 Battery Pack to instantly increase the run-time and durability of your M18 cordless tools.

Highlights

  • All-weather performance: Delivers fade free power in extreme jobsite conditions
  • Best-in-class construction: Offers long-lasting performance and durability
  • Fuel gauge onboard: Displays remaining runtime for less downtime on the job
  • REDLINK Intelligence: Provides optimized performance and overload protection using total system communication between tool, battery and charger
  • Versatility: Powers more than 60 Milwaukee M18 cordless power tools
  • Includes: (2) M18 REDLITHIUM XC5.0 Extended Capacity Battery Pack (48-11-1850)
  • Click here for more information on Electronic Recycling Programs
  • Return Policy

Product Information

Internet # 339037756

Model # 48-11-1852B

Store SKU # 1014866866

Additional Resources

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From the Manufacturer

Specifications

Dimensions: H 2.8 in, W 3.1 in, L 4.5 in

Dimensions

Product Height (in.)

2.8 in

Product Length (in.)

4.5 in

Product Width (in.)

3.1 in

Details

Battery Power Type

Lithium Ion

Battery Voltage (V)

18V

Charge time (min.)

60

Charger Included

Charger Not Included

Color Family

Red

Individual Battery Weight

1.8 lb

Number of Total Batteries Included

2

Power Tool Accessory Type

Battery

Power Tool Features

No Additional Features

Rechargeable

Yes

Returnable

90-Day

Used with Equipment Type

Specialty Power Tool

Works With

No additional compatibility

Questions & Answers

My M12/M18 charger said the battery was fully charged (green light) but the indicator on the battery only lights up one light on the fuel gauge. Are these not compatible?
ByJun 11, 2026
1 Answer | 
Answer This Question

Can you send our team an email at social.media@milwaukeetool.com, so we can learn more about your question?

By|Jun 20, 2026

    (1)

    Will this work with my Milwaukee lawnmower
    ByApr 8, 2026
    1 Answer | 
    Answer This Question

    Hey, James. Yes, the M18™ REDLITHIUM™ XC 5.0Ah Battery will work with your Milwaukee M18 FUEL™ Lawn Mower, but with significantly reduce runtime.

    By|Apr 8, 2026


      Viewing 1-2 of 2

      Customer Reviews

      4.8 out of 5

      • 4.8 out of 68 reviews
      • 0% recommend this product
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      Showing 1-10 of 68 reviews
      Good, Durable Batteries but prefer the Resistant version
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      This customer chose to rate the product and not provide text.
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      Expensive little buggers. also they dont come with any way to charge them. buying a standalone charger for these is another 120 bucks.
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      Another great product by Milwaukee, the batteries charge fast and hold a charge longer than their competitors
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      Nice product and great help by staff.
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      Showing 1-10 of 68 reviews

      Compare Key Features

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      Product Snapshot

      Ideal for customers who want extended run-time and durability, ensuring superior performance in extreme conditions.
      Built for long-lasting durability and high performance in extreme jobsite conditions.
      Ideal for professionals who want rapid, simultaneous charging for multiple M18 batteries and devices.
      Ideal for pros needing reliable runtime and power, ensuring consistent performance for tough jobs.

      Voltage

      18 V
      18V
      18V
      20V

      Capacity

      5.0 Ah
      5.0 Ah
      4.0 Ah and 5.0 Ah

      Battery Type

      Lithium-Ion
      Lithium-Ion
      Lithium-Ion
      Lithium-Ion

      Charging Time

      60 minutes
      60 minutes
      120 minutes
      90 minutes

      Run Time

      2.5X more than standard batteries
      Up to 2.5X more
      Consistent runtime on jobsite