Milwaukee M12 REDLITHIUM 2.0 Compact Battery Kit: 2 Batteries + Charger

Power that lasts longer in a compact package

The Milwaukee 48-11-2420 kit pairs two M12 REDLITHIUM 2.0 compact batteries with the M12 charger (48-59-2401) to deliver genuine on-site efficiency. Expect up to 2X more runtime, along with 20% more power and 2X more recharges compared with standard lithium-ion packs. This combination is designed to help you complete tasks faster without constantly swapping packs.

Engineered for everyday use, the REDLITHIUM 2.0 cells stay cooler during heavy workloads and are built to perform in cold conditions down to -18°C (-0°F). The compact design fits in tight spaces, reducing fatigue and making access easier when you’re working overhead or in cramped corners.

• Optimized performance with tool-to-battery communication
• Best-in-class construction for long-lasting durability
• Fuel gauge onboard to display remaining runtime

Smart protection and longer life

REDLINK Intelligence provides overload protection to guard tools in demanding tasks, along with discharge protection to help prevent cell damage. A dedicated temperature management system and individual cell monitoring help maximize life, even under tougher conditions and extended use. While nothing can guarantee outcomes, these features are designed to support consistent power delivery and reliability over time.

Real-world use cases

Whether you’re assembling cabinetry, drilling through metal, or running a long dry-fit session, the compact 2.0 Ah packs reduce bulk without sacrificing capability. The cooler operation can make longer sessions more comfortable, and the cold-weather performance helps preserve power when a project extends into chilly mornings or shaded outdoor sites.

• Two 2.0 Ah packs deliver solid work-per-charge in a compact form
• Fewer interruptions thanks to improved recharge cycles and on-tool gauges
• Compatible with the entire M12 cordless tool ecosystem for flexible upgrades

Bottom line

This Milwaukee M12 REDLITHIUM 2.0 Compact Battery Kit offers a practical upgrade path for M12 users who want extra runtime, durability, and smarter power management. The included charger helps you get back to work quickly, while the compact batteries support comfortable handling in tight spaces.