Skip to content

HOTLINE - 1-888-514-5151

Get 10% off your first order - 🎉Use NEWTOPBT | September 30th

100% secure payment

Get 10% off your first order - 🎉Use NEWTOPBT | September 30th
Milwaukee M18 REDLITHIUM XC4.0 Extended Capacity Battery Pack
Milwaukee

Milwaukee M18 REDLITHIUM XC4.0 Extended Capacity Battery Pack

$150.16 - $150.16
$150.16
$150.16 - $150.16
$150.16
Availability:
In Stock
SKU 48-11-1840

100% Satisfaction Guaranteed

We'll exchange or refund any product that doesn't meet your expectations.

Uncover the full potential of this product

The milwaukee 48‑11‑1840 M18 REDLITHIUM XC4.0 delivers red lithium xc 4.0 extended runtime and up to 20 % more power than standard lithium‑ion packs. Designed for professional users, it runs cooler and operates down to −18 °C, ensuring fade‑free output in extreme conditions. Integrated REDLINK™ intelligence protects against overload and cell drift. Rugged construction resists impact and vibration, while it remains fully compatible with all M18 tools.

  • Extended Runtime XC4.0

    • Offers up to twice the runtime of standard packs for prolonged jobsite performance.



  • 20 % More Power

    • Delivers more consistent output under load compared to standard capacities.



  • Onboard Fuel Gauge

    • LED indicator displays remaining runtime clearly during use.



  • REDLINK™ Intelligent Protection

    • System communication between tool, battery, and charger prevents overload and extends battery life.



  • Extreme Climate Durability

    • Cools efficiently and delivers fade‑free power even at 0 °F (−18 °C) or below.



  • Battery Line: REDLITHIUM XC4.0

  • Voltage: 18 V

  • Capacity: 4.0 Ah (~72 Wh)

  • Weight: ~1.54 lb

  • Dimensions: approx. 4.5 in (L) × 3.1 in (W) × 2.8 in (H)

  • Charge Time (Standard Charger): ~76 min (Rapid/Super Charger ~48 min)

  • Housing: Rugged plastic/rubber build

  • Compatibility: Powers 40–60+ Milwaukee M18 tools

  • Battery Chemistry: Lithium‑Ion


This product uses lithium‑ion chemistry and may present fire or chemical hazards if damaged, over‑charged, improperly stored, or exposed to excessive heat. Always follow Milwaukee’s safety instructions and handling guidelines.

Frequently Asked Questions

It delivers up to twice the runtime and approximately 20?% more power per charge.

Yes—it operates reliably below 0?°F (?18?°C) without performance loss.

Yes—an onboard fuel gauge LED shows remaining power.

Yes—it works seamlessly with all Milwaukee M18 cordless tools.

Absolutely—REDLINK™ intelligence monitors cell health, prevents overload, and ensures optimal charge/discharge.