Milwaukee 48-11-1840 18V M18 Red Lithium XC 4.0Ah Battery Pack

Overview

Engineered for serious cordless work, the Milwaukee 48-11-1840 18V M18 Red Lithium XC 4.0Ah Battery Pack delivers extended runtime and dependable power across a wide range of tasks. Built to stay cooler on long days and to perform in extreme cold, it sets a high bar for extended capacity and consistent performance on demanding job sites.

Key benefits at a glance

• Up to 2x more runtime under typical workloads compared to standard lithium packs.
• About 20% more power for sustained performance through demanding tasks.
• 4.0 Ah capacity to keep tools running longer between charges.
• On-board charge gauge for quick visibility into remaining runtime.
• REDLINK Intelligence delivers balanced cell discharge and protects against overloads.

Built for harsh job sites

The XC 4.0Ah pack is designed to endure tough environments. It runs cooler during long sessions and maintains performance even in cold conditions down to 0°F (-18°C). Durability is paired with broad compatibility: this pack fits more than 40 Milwaukee M18 tools, increasing versatility for mixed tool kits.

Smart features that streamline your workflow

• On-board gauge provides a quick read on remaining charge, helping you plan tool swaps and breaks.
• REDLINK Intelligence distributes power efficiently across cells and prevents overloads, helping protect tool electronics.
• Rugged construction supports real-world handling on busy job sites.

Real-world use cases

Imagine running a string of drills, drivers, or saws through a long day without frequent recharges. The 4.0Ah XC pack offers longer sessions, fewer battery swaps, and reliable performance across varied climates—from indoor projects to outdoor cold-weather work.

Compatibility and what's included

This battery pack is designed to work with a broad range of Milwaukee M18 tools, helping you maximize your existing kit. Pack includes one Milwaukee 48-11-1840 18-Volt M18 Red Lithium XC 4.0Ah Battery Pack.