Battery Replacement for Milwaukee M12: 12v Batteries 4.0 ah Lithium Compatible with Milwaukee 12 Volt Cordless Power Tools 4 Pack 48-11-2411 48-11-2440 48-11-2420 48-11-2401 48-11-2425
Condition: New
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Availability:
In Stock.
Arrives
Thursday, Jun 4
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Size: 4 pack 4.0 ah
Features
- Battery SpecificationsCapacity: 4000mAh/4ah/4.0 ah; Voltage: 12V; Type: lithium-ion; 4 Pack; Rechargeable batteries(Compatible with Original Milwaukee 12V Charger)(4 battery packs inside no charger or adapter provided)
- 4.0Ah High CapacityThe replacement for Milwaukee 12v battery has a storage capacity of up to 4000mAh, which has a longger runtime.
- Compatible with Milwaukee Heated Jacket and M12 Cordless ToolsReplacement battery for Milwaukee Heated Jacket and Milwaukee M12 12V cordless tool, this red 12 Volt battery is compatible with Milwakee li-ion 1.5ah 2.5ah 3.0ah 4ah 12-volt battery and 12v Milwaukee Heated Jacket vest chainsaw ,drill, impact driver and recip saw, and ratchet nailer,sawzall,vacuum ect cordless power tools
- Battery SafetyThe replacement for Milwaukee battery M-12 passed ROHSCE and FCC professional certification, replace for 12v milwaukee battery with overheat protection, over-voltage protection, over-current protection, over-charge protection and short circuit protection etc
- After-sales Service4 pack 4.0Ah for Milwaukee 12 volt battery, one user manual, 1 year Warranty. Any questions, please contact us by clicking the "Ask a question" on our storefront or the "contact seller" in "YOUR ORDER" options.
Number of Batteries: 2 12V batteries required. (included)
Brand: Akkopower
Battery Cell Composition: Lithium Ion
Battery Capacity: 4 Amp Hours
Recommended Uses For Product: Heated Jacket, Power Tool
Package Dimensions: 4.88 x 4.49 x 3.94 inches
Item Weight: 1.61 pounds
Item model number: ML12-4.0Ah
Batteries: 2 12V batteries required. (included)
Date First Available: August 8, 2025
Manufacturer: Akkopower
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, Jun 4
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: 2 pack 4.0 ah
Work perfectly, great for the price
Reviewed in the United States on January 24, 2026 by Racermutt
Size: 4 pack 4.0 ah
Honestly I wasn't sure how these would do because I have bought aftermarket batteries for my milwaukee tools and they failed within 2 weeks of having them. These are almost on par with oem batteries. Definitely happy with this purchase
Reviewed in the United States on January 30, 2026 by James trottier
Size: 2 pack 4.0 ah
Great performance. Life will not be as long as brand product
Reviewed in the United States on October 29, 2025 by TRAEED INTL
Size: 2 pack 4.0 ah
Received the M12 batteries that have been fully charged. It works very well and meets 4Ah claim. Excellent cost effective replacement for Milwaukee batteries. However, there is a minor issue - the clip of the battery doesn’t secure the battery well. Sometimes, the battery could drop from the drill.
Reviewed in the United States on October 31, 2025 by WH
Size: 2 pack 4.0 ah
Good quality. Holds charge well. Great run time
Reviewed in the United States on January 21, 2026 by David B.
Size: 2 pack 4.0 ah
I was obviously skeptical about these off rip but I understand how 18650s and 21700s work in power tool batteries. That being said, the price isn’t unrealistic for a good 3 or 4 AH battery, we all know the big companies overcharge for some simple cells. I only purchased these to be used in my m12 heated jacket as all I have is the OEM 2AH battery. If you take these aftermarket batteries apart they are labeled as 4000mah, which is what they should be. However, these severely under perform compared to the OEM 2AH battery that is now 3 years old and has been through plenty of charge cycles. For reference, my OEM lasts my full 8 hour shift on low heat, and I can play the game with it on at home for a couple hours. Usually 11-12 hours of usage. High lasts roughly 4 and a half hours. These “4AH” batteries lasted roughly 5 hours swapping between low and medium heat settings. Another hint is how fast they charge. They should not charge faster than my 2AH with the same charger… about 25 minutes. My 2AH charges in about 40. I wish I had my multimeter to measure the actual voltage and capacity of these. In conclusion, if I really needed batteries I might buy these again for $20, but I’d probably try a different brand first. Personally, if you’re comfortable with lithium tech, I would take these apart and put some actual good 18650s in the shell.
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Reviewed in the United States on October 9, 2025 by Seamus Steele
Size: 2 pack 4.0 ah
I’m a little skeptical of weather or not it is actually 4.0 AH because it is exactly the same size as my Milwaukee 2 AH battery time will tell weather or not I get more time out of these price was good for the product fits perfectly and runs my tool they stay in place and actually came fully charged
Reviewed in the United States on October 31, 2025 by Mike
Size: 2 pack 4.0 ah
Do not buy. They didn’t fit in the tools, one of them never charged (broken). Very cheap materials. Very disappointing. I upload a photo comparison with the original ones.
Reviewed in the United States on December 22, 2025 by Uri Resendiz Uri Resendiz