Milwaukee 48-11-2425C M12 REDLITHIUM HIGH OUTPUT CP2.5 Battery Pack

The Milwaukee 48-11-2425C M12 REDLITHIUM HIGH OUTPUT CP2.5 battery is built for users who want more punch from their 12V cordless tools without adding bulk. Using HIGH OUTPUT cell technology and REDLINK™ electronics, this compact pack delivers 25% more power and runs 25% cooler than standard M12 CP batteries, so compact drivers, ratchets, cut-off tools, and lights hold speed under load instead of sagging when the work gets tough. That extra headroom matters in real jobs: drilling anchors overhead, cutting fasteners in tight engine bays, or driving long screws into dense material. The CP2.5 gives you the power and runtime of an M12 XC pack in a smaller, lighter housing that keeps tool balance quick and reduces arm fatigue over a long shift. It’s also designed for harsh environments with a chemical-resistant housing that stands up to oils, greases, and common shop solvents, and it delivers fade-free power down to 0°F / −18°C for winter work and cold warehouses. Fully compatible with 125+ M12 tools and chargers, the CP2.5 drops into existing kits and immediately broadens what your 12V platform can do.

Unlike generic compact batteries, the CP2.5 is tuned for sustained output in demanding applications. HIGH OUTPUT cells shed heat more effectively than legacy chemistries, which means less thermal throttling during repeated cuts, grinding, or rapid fastening cycles. REDLINK™ Intelligence coordinates pack, tool, and charger communication to optimize performance and protect against overloads and over-discharge, so you can push your tools confidently without babysitting the pack. If you outfit service vans, plant maintenance carts, or finish carpentry crews with M12 batteries, upgrading to CP2.5 standardizes a single compact pack that behaves like a larger XC in most tasks—without the weight penalty.

Milwaukee M12 REDLITHIUM HIGH OUTPUT CP2.5 Battery Pack At a Glance

• 25% more power / 25% cooler: Drives demanding 12V applications with less heat.
• XC power, compact size: Similar output to an M12 XC pack in a smaller footprint.
• Cold-weather performance: Delivers fade-free power down to 0°F / -18°C.
• Resistant housing: Better protection against common shop oils and solvents.
• REDLINK™ Intelligence: Optimized performance and overload protection.
• Lighter carry: Reduces fatigue for ladder, overhead, and all-day service work.
• System-ready: Powers 125+ M12 solutions.

Markets

• Service & Maintenance Useful for technicians who move constantly between tasks—panel covers, anchors, conduit straps, and fasteners—where a compact M12 battery keeps tools nimble and reduces fatigue on all-day routes.
• Automotive & Fleet Handles repetitive fastener work on interior panels and engine bay components; cooler running helps impact ratchets and cut-off tools maintain speed on long sequences without thermal slowdowns.
• Electrical & HVAC Balances reach and runtime for overhead drilling, metal strut cuts, junction box installs, and sheet-metal screws; all-weather operation supports rooftop units and cold-room service.
• Manufacturing & Facilities Durable, chemical-resistant housing tolerates oils and cleaners around assembly lines, maintenance carts, and plant shutdowns; keeps inspection lights and meters powered through long shifts.
• Remodeling & Finish Carpentry Adds punch to compact drivers and oscillating tools for trim, cabinetry, and hardware without making the tool nose-heavy; fade-free power improves cut quality on detailed work.
• Residential & Multi-Family Property Management Reliable 12V lithium-ion power for locksets, hinge adjustments, drywall anchors, and lighting—small kits carry better through stairwells and tight mechanical rooms.
• Utilities & Field Work Cold-start performance down to 0°F / −18°C helps in early morning or winter tasks; compact form fits harness pouches and reduces bulk on poles or in vaults.

If you’ve been swapping between compact packs for balance and XC packs for power, the M12 HIGH OUTPUT CP2.5 closes that gap. You get XC-like output in a smaller, lighter battery, so compact saws, ratchets, and impact drivers stay quick and controllable—especially overhead or inside cabinets. The pack’s 25% power gain and cooler thermals mean fewer stalls and less throttling during back-to-back fasteners, metal cuts, or dense hardwood drilling. REDLINK™ Intelligence keeps everything in tune, protecting your investment from overloads while delivering consistent torque and speed. Add in chemical-resistant housing and all-weather performance, and you have a compact M12 battery that holds up to real jobsite conditions and keeps your tools moving. If you want a simple way to boost the performance of the M12 gear you already own—without making the kit heavier—the CP2.5 is the everyday upgrade that pays off on day one.

Milwaukee 48-11-2425C M12 REDLITHIUM HIGH OUTPUT CP2.5 Battery Pack Features

• HIGH OUTPUT new lithium-ion technology provides more power, better thermals, and SUPERCHARGE capability
• REDLINK Intelligence: Our battery circuitry provides optimized performance and overload protection using total system communication between tool, battery and charger
• Delivers 25% more power and runs 25% cooler
• Provides the power of an XC battery in a compact size
• Versatility: Powers all 125+ M12 cordless solutions
• Best-in-class construction: Resistant housing designed to provide increased protection against exposure to common oils, greases, and solvents
• All-weather performance: Delivers fade free power in extreme jobsite conditions
• 2 Year Warranty

Milwaukee 48-11-2425C M12 REDLITHIUM HIGH OUTPUT CP2.5 Battery Pack Includes

• (1) M12 REDLITHIUM HIGH OUTPUT CP2.5 Battery Pack (2.5Ah)

Milwaukee 48-11-2425C M12 REDLITHIUM HIGH OUTPUT CP2.5 Battery Pack Specifications

• GTIN: 00045242615759
• Manufacturers Part #: 48-11-2425C
• Former MFG Part #: 48-11-2425
• Battery Platform / Voltage: M12 / 12V
• Capacity: 2.5 Ah
• Charge Time: ~40 min (charger dependent)
• Operating Temp: Down to 0°F / -18°C
• Electronics: REDLINK™ overload protection
• Housing: Chemical/solvent-resistant
• Assembled Dimensions (approx.): 2.0″ W × 1.9″ H × 0.45″ D
• Weight: 0.45 lb

Milwaukee 48-11-2425C M12 REDLITHIUM HIGH OUTPUT CP2.5 Battery Pack Warranty

• Milwaukee’s 2 Year Limited Warranty

Why Customers Choose the Milwaukee M12 REDLITHIUM HIGH OUTPUT CP2.5 Battery Pack

Users choose the 48-11-2425C because it increases real-world productivity where it counts: tight spaces, overhead work, cold mornings, and long sequences that tax small batteries. The 25% more power helps compact tools act bigger without feeling heavier, and the 25% cooler operation sustains speed across demanding runs. With REDLINK™ protection, a chemical-resistant shell, and fade-free output down to 0°F / −18°C, the pack is built for service vans, plant floors, and punch-list carts that see tough environments every day. Most important, it slots into the 125+ tool M12 system, so one battery type supports drilling, fastening, cutting, lighting, and inspection tools across the crew. For teams that value light weight and control but don’t want to give up power, the M12 REDLITHIUM HIGH OUTPUT CP2.5 is the smart, durable choice that keeps jobs moving with less downtime and less fatigue.