Is this a genuine Milwaukee product? Some are saying it is not.

Yes it is. Our product are 100% brand new and are genuine Milwaukee battery. We buy in bulk quantity so sometimes it does not come in original packaging. But I can assure you they are 100% brand new and are from Milwaukee.

Does this work for a Milwaukee lantern? If so, how long will it last before before it needs to be charged?

(Yes and that depends) Yes it works with 2 types of M12 lights (1. M12 LED Stick Light 2351-20) and (2. M12 LED Lantern/Flood Light 2362-20) Now you said Lantern so i'm guessing you mean the 2362-20 which has Four Light Settings: High, Medium, Low, Strobe. Run times are base on the XC 4.0 Extended Capacity Battery Pack. Low 67 Lumens 67 Hrs Run Time, Medium 200 Lumens 15 Hrs Run Time and High 400 Lumens 8 Hrs Run Time. Hope this Helps Good Luck. :)

Will this battery really increase the power of my tools? Specifically the M12 5/8" cordless circular saw.

Under heavy load yes the larger capacity allows the tool to draw more amperage resulting in slightly more power without stalling out the blade.

Don't this battery fits on milwaukee mlw255721 3/8 inch m12 fuel ratchet auto kit ?

As far as I know, all of the M12 batteries are interchangeable. We have 1 tool with 3 different size batteries. We use this tool in our business and have run it hard for over a year with no problems...

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🔧 Power Up Your Projects with Confidence!

BUILT TO LAST - Engineered for durability, ensuring long-lasting use on the job site.
LIGHTWEIGHT YET MIGHTY - Weighing only 12.8 ounces, it’s the perfect balance of power and portability.
UNLEASH UNMATCHED POWER - Experience fade-free performance even in extreme conditions.
VERSATILE COMPATIBILITY - Powers most Milwaukee M12 cordless tools, making it a must-have for any toolkit.
SMART COMMUNICATION TECHNOLOGY - Optimized performance with total communication between tool, battery, and charger.

The Milwaukee M12 REDLITHIUM XC 4.0 Extended Capacity Battery Pack is a high-performance battery designed for Milwaukee's M12 cordless power tools. With a 12V output and 4 Amp Hours capacity, it delivers reliable, fade-free power even in the toughest job site conditions. Weighing just 12.8 ounces, this battery combines lightweight design with exceptional durability, ensuring you can tackle any task with ease.

Reviews

T**H

Milwaukee quality says it all

This M12 battery has the extra needed power, and at a decent price. It's compatible with all M12 tools, charges quick, provides great power, and functions as designed

5.09.2025

J**E

Awesome batteries

I’ve used dewalt tools all my life. But I recently got a deal on a m12 impact. These tools and especially the batteries are premium quality. Great deal too

25.08.2025

M**N

A huge improvement over the standard

Strong and long lasting. The flat base allows it to stand up too.

29.08.2025

M**Y

Works as expected

We’ve had no problems with this battery. It charges fine and fits the tool it’s needed for correctly. We have no complaints and are really excited to be building our Milwaukee tool set.

6.01.2025

J**S

Milwaukee M12 Battery

Top of the Line, quality product and fast delivery. Very satisfied. Thanks!

21.08.2025

R**Y

File down the side clips before inserting battery.

This is my backup battery for my chainsaw. First thing I did was to take my Dremel tool and grind down the side clips to make it easier to remove from the tool. I did the same with the original battery unit after many frustrations attempting to remove the battery. Milwaukee needs to fix that problem.

4.09.2025

J**L

Great battery

Charged battery and used it to drill tapcon screws while putting up accordion shutters. Put in about 50 tapcons still has good charge

20.04.2025

G**S

Great

2.09.2025

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TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

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3 weeks ago

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Manufacturer	TV Non-Branded Items (Home Improvement)
Part Number	48-11-2440
Item Weight	12.8 ounces
Product Dimensions	4 x 1.75 x 5.77 inches
Item model number	48-11-2440
Batteries	1 Lithium Ion batteries required. (included)
Is Discontinued By Manufacturer	No
Size	Large
Color	Black
Thickness	7 Inches
Power Source	Battery
Voltage	12 Volts
Item Package Quantity	1
Batteries Included?	Yes
Batteries Required?	No
Battery Cell Type	Lithium Ion
Battery Capacity	4 Amp Hours

Milwaukee 48-11-2440 M12 REDLITHIUM XC 4.0 Extended Capacity Battery Pack

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