This 2-pack bundles two Milwaukee M18 REDLITHIUM FORGE XC8.0 Battery Packs for M18 users who run high-demand tools and need a second pack in rotation. Model Number: 48-11-1881 (M18 REDLITHIUM FORGE XC8.0 Battery Pack), qty 2.

Milwaukee states each pack delivers the power of a HIGH OUTPUT 12.0 battery in a smaller, lighter XC8.0 size. Each is rated at 8 Ah and sits at PWR Level 4 on Milwaukee's REDLITHIUM power scale. That puts it in the sweet spot for impact wrenches, grinders, rotary hammers, and saws: strong output under load without the bulk of the largest packs hanging off the tool on overhead or ladder work.

Charging is where a pair pays off. The packs are COOL-CYCLE capable, built for active cooling on compatible chargers. Milwaukee lists 80% charge in 35 minutes on the M18 Dual Bay Simultaneous Super Charger and a 45-minute full recharge on the Super Charger. With two packs, one is on the tool while the other is back on the charger.

The packs are built for jobsite conditions. Milwaukee calls out a patented ingress coating, upgraded venting, and a housing resistant to common oils, grease, and solvents. REDLINK Intelligence manages communication between tool, battery, and charger for performance optimization and overload protection, and an enhanced onboard fuel gauge gives quick, readable charge status.

Best fit: pros already on the M18 platform (electricians, plumbers, HVAC techs, mechanics, remodelers, GCs) who want two premium packs for high-draw tools and less time waiting on the charger. Both packs fit the full M18 lineup of 250+ tools.

Two FORGE Packs, Zero Waiting

If one FORGE XC8.0 is the sweet spot between size and power, two of them is how you stop planning your day around the charger.

• Who it's for: M18 users running high-draw tools daily who need a second premium pack in rotation.
• Why it stands out: 12.0-level power claims in a compact 8.0Ah pack, COOL-CYCLE fast charging, and REDLINK overload protection, times two.
• Worth knowing: Batteries only. No charger in the box. The 35-minute-to-80% figure requires the M18 Dual Bay Simultaneous Super Charger; standard chargers take longer (Milwaukee lists 83 min on the Rapid Charger, 162 min on the Standard Charger for a full charge).

• What tools do these batteries fit? All Milwaukee M18 cordless tools. The M18 system covers 250+ tools.
• How many batteries are included? Two 48-11-1881 M18 REDLITHIUM FORGE XC8.0 packs, 8 Ah each.
• Is a charger included? No. Batteries only.
• How fast do they charge? Milwaukee lists a 45-minute full recharge on the Super Charger, 83 minutes on the Rapid Charger, and 162 minutes on the Standard Charger, and 80% in 35 minutes on the M18 Dual Bay Simultaneous Super Charger.
• Do they have protection electronics? Yes. REDLINK Intelligence handles tool-battery-charger communication for performance optimization and overload protection.