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 · 41 reviews)
Alexander★★★★★
I’m honestly surprised by how much longer this 4.0Ah pack lasts compared to the standard 2.0Ah—it easily got me through a full afternoon of drilling without needing a swap. The cold-weather performance is a huge plus for my winter garage projects.
Claire★★★★★
Even in freezing weather this 4.0Ah pack keeps my impact driver running strong for a full day of deck work. The runtime is a huge step up from my old 2.0Ah batteries.
Kevin J.★★★★★
Finally, a battery that actually lasts through my whole shift without needing a swap—even on cold mornings. The cold-weather performance is a game changer for outdoor work.
Elizabeth X.★★★★★
Got this to run my heated hoodie on a cold jobsite and it lasted through a full 8-hour shift with juice to spare. The cold-weather performance is no joke—it didn’t slow down once, even when temps dropped below freezing.
Jason★★★★★
Used it all day in below-freezing weather running a 3/8 impact and a Sawzall—never faded or slowed down once. Charges up noticeably faster than my old 2.0Ah packs, too.
Ellie A.★★★★★
This battery easily lasts through a full day of heavy drilling on my impact driver, and I love that it keeps working even when temps drop below freezing. The charge time is noticeably faster than my older batteries too.
Emma O.★★★★★
I was skeptical about how this battery would hold up in freezing weather, but it kept my drill running strong for hours during an outdoor project. The 4.0Ah capacity is a nice upgrade over the standard pack, and it charges noticeably faster too.
George C.★★★★★
Had to charge my impact driver twice yesterday with the old battery — this 4.0 kept going through the whole deck repair without a break, even in the cold morning air.
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.
