Milwaukee 48-11-1881X M18 REDLITHIUM FORGE HD8.0 High Output Battery Pack

The Milwaukee 48-11-1881X M18 REDLITHIUM FORGE XC8.0 is built for crews who want HD12.0-class performance in a smaller, lighter battery. Delivering the same power as the M18 HIGH OUTPUT HD12.0 with 8.0Ah of runtime, this pack is tuned for high-draw tools while keeping weight down for overhead and all-day work. FORGE batteries are Milwaukee’s most powerful, fastest-charging, and longest-life REDLITHIUM packs. The XC8.0 is COOL-CYCLE™ capable, enabling high-speed active cooling on compatible chargers to cut downtime between cycles. Pair it with the M18 Dual Bay Simultaneous Super Charger and you can reach 80% in about 35 minutes (≈45 minutes to 100%), helping teams stay productive on tight schedules.

A patented ingress coating and upgraded venting design protect internals while maximizing airflow during active cooling. The chemical-resistant housing stands up to oils and greases, and REDLINK™ Intelligence manages power and overload protection through tool-battery-charger communication. An improved, high-visibility fuel gauge makes status checks easy in bright conditions. Fully compatible with 250+ M18 tools, the XC8.0 is an easy system upgrade when you need high output in a compact form.

Milwaukee M18 REDLITHIUM FORGE HD8.0 High Output Battery Pack At a Glance

• HD12.0 power, smaller pack: Same power as M18 HIGH OUTPUT HD12.0 in a 20% smaller / 30% lighter* form factor.
• Fast turnaround: 35-minute supercharge to 80% on the M18 Dual Bay Simultaneous Super Charger.
• COOL-CYCLE™ capable: Active cooling with compatible chargers for less downtime.
• Longest service life: Designed for the most recharges and consistent performance over time.
• Jobsite protection: Ingress-coated, upgraded vents and solvent-resistant housing.
• Smart electronics: REDLINK™ overload protection and optimized output.
• Clear status: Enhanced onboard fuel gauge readable in sunlight.
• System ready: Works with 250+ M18 tools; PWR Level 4 on the REDLITHIUM scale.

Markets

• Commercial Construction & Demo Powers high-draw saws and grinders with fewer changeouts.
• Concrete & Masonry Consistent torque for SDS hammers and coring in tight schedules.
• Metal Fabrication Keeps compact and mid-size grinders cutting cool.
• Industrial MRO Fast charge recovery for multi-shift maintenance.
• Framing & Carpentry Strong output for table/circ saws without the mass of HD packs.
• Utility & Field Service Weather-minded build for outdoor work and service fleets.

Teams need more work per cycle without hauling the weight of a 12.0Ah pack. The FORGE XC8.0 hits that balance—HD12.0-level power in a pack that’s smaller and lighter, so tools stay nimble overhead and in tight bays. Between tasks, COOL-CYCLE active cooling plus a 35-minute supercharge to 80% gets batteries back in rotation fast. The ingress coating and venting help protect and cool the cells, while REDLINK electronics guard against overload in heavy cuts and grinds. If you’re standardizing on M18 and want maximum output with less bulk, the 48-11-1881X FORGE XC8.0 is a straightforward way to push saws, hammers, and grinders harder with shorter waits at the charger.

Milwaukee 48-11-1881X M18 REDLITHIUM FORGE HD8.0 High Output Battery Pack Features

• Delivers HIGH OUTPUT™ 12.0 power in a smaller size and lighter weight
• 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
• Best protection from jobsite, weather and environmental conditions
• PWR Level 4 on the REDLITHIUM™ Power scale
• Resistant housing designed to provide increased protection against exposure to common oils, greases, and solvents
• REDLINK™ Intelligence: Our battery circuitry provides optimized performance and overload protection using total system communication between tool, battery and charger
• Enhanced onboard fuel gauge with improved readability in direct sunlight
• 3-year battery warranty
• Includes (1) M18™ REDLITHIUM™ FORGE™ XC8.0 Battery Pack

Milwaukee 48-11-1881X M18 REDLITHIUM FORGE HD8.0 High Output Battery Pack Includes

• (1) M18 REDLITHIUM FORGE XC8.0 Battery Pack (48-11-1881X)

Milwaukee 48-11-1881X M18 REDLITHIUM FORGE HD8.0 High Output Battery Pack Specifications

• Battery Platform / Voltage: M18 / 18V
• Capacity: 8.0 Ah
• Cooling: COOL-CYCLE™ capable (with compatible chargers)
• Charge Speed: ≈35 min to 80%, ≈45 min to 100% (Dual Bay Simultaneous Super Charger)
• Electronics: REDLINK™ overload/thermal management
• Housing: Chemical-resistant; ingress-coated, upgraded venting
• Onboard Gauge: Enhanced LED fuel gauge
• Dimensions (L × W × H): 6.89″ × 3.35″ × 6.77″
• Weight: 2.69 lb
• Power Scale: PWR Level 4
• GTIN: 00045242798001
• Manufacturer Part #: 48-11-1881X
• Former Part #: 48-11-1881

Milwaukee 48-11-1881X M18 REDLITHIUM FORGE HD8.0 High Output Battery Pack Warranty

• Milwaukee’s 3 Year Limited Warranty

Why Professionals Choose the Milwaukee M18 REDLITHIUM FORGE HD8.0 High Output Battery Pack

Pros choose this M18 battery because it brings HD12.0 power to a smaller, lighter pack—ideal for overhead work and fast tool changes. COOL-CYCLE support and 35-minute supercharging keep rotations tight, while REDLINK electronics protect tools and packs under heavy loads. The ingress-coated, vented design and chemical-resistant housing stand up to real jobsite conditions. For users who want a long-life REDLITHIUM FORGE pack with 8.0Ah runtime, high output, and quick turnaround on the charger—without the bulk of a 12.0—XC8.0 is the practical upgrade for 250+ M18 tools.