Milwaukee M12 12-Volt REDLITHIUM XC 4.0Ah Extended Capacity Battery Pack (48-11-2440)M12 REDLITHIUM XC 4. 0Ah Battery Pack This Milwaukee M12 REDLITHIUM XC 4. 0Ah battery delivers long runtime and fade free power for all M12 cordless tools. Built with REDLINK electronics for overload protection and cell monitoring, it performs in harsh conditions and resists self discharge. A flat bottom base lets compatible tools stand upright for convenience on the job. Key Features: Extended Runtime: 4. 0Ah capacity provides up to 2. 5X runtime vs.

M12 REDLITHIUM XC 4.0Ah Battery Pack

This Milwaukee M12 REDLITHIUM XC 4.0Ah battery delivers long runtime and fade-free power for all M12 cordless tools. Built with REDLINK electronics for overload protection and cell monitoring, it performs in harsh conditions and resists self-discharge. A flat-bottom base lets compatible tools stand upright for convenience on the job.

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Key Features:

• Extended Runtime: 4.0Ah capacity provides up to 2.5X runtime vs. CP1.5 packs
• Durable Electronics: REDLINK Intelligence prevents overloads and overheating
• All-Weather Performance: Reliable power even in sub-zero temperatures
• Convenient Design: Flat-bottom base stands many M12 tools upright; rubber overmold for protection
• Fast Charging: Recharges in approximately 40–77 minutes depending on charger

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Specifications Table:

Specification	Details
Battery System	Milwaukee M12
Voltage (V)	12
Battery Capacity (Ah)	4.0
Battery Power Type	Lithium-Ion
Rechargeable	Yes
Charge Time (min)	40–77
Number of Batteries Included	1
Power Tool Accessory Type	Battery
Cordless/Corded	Cordless
Color Family	Red
Fuel Gauge	On-tool indicator
Protection Electronics	REDLINK Intelligence overload and temperature protection
Self-Discharge	Resists drainage when not in use
Base Design	Flat-bottom base for upright tool stance; rubber overmold; water protection barrier
Product Length (in.)	7.01
Product Width (in.)	3.346
Product Height (in.)	9.94
Product Depth (in.)	7.01
Item Weight (lb)	0.9 (battery); site listing also shows 3.286219
Warranty	3-year limited

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Frequently Asked Questions (FAQ):

Q: Is this battery compatible with all Milwaukee M12 tools and chargers?
A: Yes, it works with all Milwaukee M12 lithium-ion tools and M12 chargers (sold separately).

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Q: What is the voltage and capacity?
A: 12 volts, 4.0 amp-hours (XC extended capacity).

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Q: How long does it take to charge?
A: Approximately 40–77 minutes depending on the charger used.

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Q: Does it have overheat/overload protection?
A: Yes, REDLINK circuitry monitors and protects the pack to prevent overload and overheating.

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Q: Is the battery rechargeable and does it self-discharge when stored?
A: Yes, it is rechargeable and resists drainage when not in use.

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Power That Elevates Every Detail

The M12 REDLITHIUM XC 4.0 battery is a compact powerhouse that keeps your tools—and your project—moving gracefully. I love its confident, sculptural base that lets tools stand upright, creating a tidy, efficient workspace. Pair it with sleek M12 compact tools to maintain a refined, minimalist aesthetic while you work. It’s the quietly luxurious essential that delivers endurance and polish in equal measure.

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AI Review Summary:

Across major retailers, buyers praise the XC 4.0 for noticeably longer runtime than compact packs and dependable performance in a wide range of tools. Many highlight genuine Milwaukee build quality and quick recharge times; a frequent note is that it keeps smaller tools running for multiple tasks without swapping. Minor complaints include heavier feel compared with CP packs and occasional variation in advertised charge times. Representative quotes: “Runs my M12 tools all day on one pack,” “Definitely authentic—powers stronger and lasts longer,” and “A bit heavier than the 2.0, but worth it for the runtime.”

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Power your entire M12 tool lineup with reliable, all‑day runtime—add the REDLITHIUM XC 4.0 battery to your cart now.

Warranty