Power your Milwaukee M12 tools with confidence. The M12 REDLITHIUM™ XC Extended Capacity Battery delivers 4.0Ah (48Wh) of runtime—even in sub-zero temperatures. Built with advanced REDLINK™ intelligence, it offers overload protection and temperature control to extend battery life and maintain consistent power. Compact yet powerful, this 12V lithium-ion pack ensures longer usage, more recharges, and fewer interruptions on the job.
Key Features:
Compatible with all Milwaukee M12 cordless tools
4.0Ah capacity for extended run time
Performs reliably in extreme cold conditions
REDLINK™ circuitry for overload and discharge protection
Durable design for professional-grade use
Dimensions:
Height: 9.94 in
Width: 3.35 in
Customer Reviews (4.8 / 5 · 31 reviews)
Nicholas★★★★★
Swapped out my old 2.0 for this 4.0 and it runs my compact sawzall almost twice as long before needing a charge. The cold-weather performance is a lifesaver on freezing mornings.
Grace Z.★★★★★
Ran my heated hoodie all day on a jobsite in freezing weather and this pack still had juice left—the cold-weather performance is no joke. Charges up pretty quick too, which saves my sanity between shifts.
Aurora★★★★★
Finally a battery that lasts through my whole deck-building session without needing a swap. It kept running strong even when temps dropped below freezing. The 4.0Ah charge level is a noticeable upgrade from the smaller packs.
Eli★★★★★
I've been using this 4.0Ah pack for landscaping work in 30-degree mornings, and it's never cut out early on my trimmer. The cold-weather performance is honestly impressive—no sluggishness like I've seen with other 12V batteries. Best part is it charges fully in just over half an hour.
Ryan U.★★★★★
This 4.0Ah battery barely weighed down my drill, which surprised me—I was expecting a brick. It’s powered through a full day of driving deck screws and still had juice left.
Eva★★★★★
Was a bit skeptical about cold weather performance, but this battery kept my drill running strong during an entire morning of outdoor work in freezing temps — no drop-off at all. The extra 4.0Ah capacity definitely outlasts my older standard packs on the same jobs.
Mia★★★★★
Ran my impact driver for two straight hours on a single charge with this pack, and it still showed two bars left. The cold-weather performance is no joke—worked fine when I left it in the truck overnight.
Zoe★★★★★
I’ve been using this 4.0Ah pack in my drill for heavy deck work, and it lasts through about 60 lag screws before I need to swap—way better than my old 2.0Ah. The charge time is quick too, hitting full in under an hour with the rapid charger.
Thomas★★★★★
The cold weather here hasn't slowed this battery down at all—still gets a full day's work out of my impact driver. 4.0Ah is perfect for heavy use without the weight being too much. Definitely a solid upgrade from the smaller packs I had before.
Victoria★★★★★
I've been using this battery daily on my impact driver for a few weeks, and the runtime easily lasts through a full day of deck work. It charges back up in about an hour, which keeps my workflow smooth.
