M18 18V REDLITHIUM XC 4.0Ah Battery Pack

This Milwaukee M18 REDLITHIUM XC 4.0Ah battery delivers long, fade-free power for all M18 cordless tools, even in harsh jobsite conditions. Built with REDLINK electronics and a rugged, rubber-overmolded housing, it resists impacts, overheating, and cell damage for extended life.

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Key Features:

• Wide Compatibility: Powers all Milwaukee M18 cordless tools and works with all M18 chargers (sold separately)
• Long Runtime: 4.0Ah capacity provides extended run time with fade-free performance
• REDLINK Intelligence: Electronics optimize performance and help prevent overloads and overheating
• Durable Construction: Welded frame, cell separators, and rubber overmold protect against vibration and impact
• Onboard Fuel Gauge: Built-in charge meter lets you quickly check remaining runtime

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Specifications Table:

Specification	Details
Battery System	Milwaukee M18
Battery Amp Hours	4.0Ah
Battery Power Type	Lithium Ion
Voltage	18V
Number of Batteries Included	1
Rechargeable	Yes
Charge Time (min)	60
Color Family	Red
Power Tool Accessory Type	Battery
Tools Product Type	Power Tool Accessory
Item Weight (lb)	1.685
Product Width (in.)	6.809
Product Height (in.)	6.115
Product Length (in.)	4.5
Onboard Fuel Gauge	Yes
Warranty	3-year limited
Model	48-11-1840

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Frequently Asked Questions (FAQ):

Q: Is this battery compatible with all M18 tools and chargers?
A: Yes. It works with all Milwaukee M18 cordless tools and M18 chargers (chargers sold separately).

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Q: How long does it take to charge?
A: Approx. 60 minutes on compatible M18 chargers.

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Q: Can it be used in cold weather?
A: Yes. It delivers fade‑free power in extreme jobsite conditions, including below-freezing temperatures.

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Q: How many batteries are included?
A: One battery pack is included.

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Q: Does it have a warranty?
A: Yes. Milwaukee backs the battery with a 3‑year limited warranty.

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Power That Elevates Every Project

Milwaukee’s M18 XC 4.0Ah battery brings steadfast energy to your workshop, keeping tools running with a quiet confidence. The bold red-and-black form, trimmed with rugged overmold, is a modern utility statement that looks as tough as it performs. Pair it with your go‑to impact driver and keep a spare on the charger to maintain a seamless workflow. It’s the kind of dependable backbone that turns everyday tasks into a streamlined, pro‑level experience.

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AI Review Summary:

Across retailer reviews, buyers praise the XC 4.0 battery for strong, consistent power and good runtime on M18 tools. Durability and the convenient fuel gauge are recurring positives. A minority report early failures or units that won’t hold a charge, usually resolved via warranty exchange. Representative quotes: “Plenty of juice for my impact and drill,” “Charge indicator is super handy,” and “One pack died within months but Milwaukee replaced it.”

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Add this M18 XC 4.0Ah battery to your kit for longer runtime, reliable power, and fewer interruptions on every job.

Warranty