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M12 12-Volt Lithium-Ion XC Extended Capacity 6.0Ah Battery Pack

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  • Compatible With All M12 Cordless Power Tools
  • Delivers up to 3X more run-time, 20% more power and 2X more life
  • REDLINK Intelligence prevents overload and protects cells
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Product Overview

The Milwaukee M12 REDLITHIUM XC6.0 Battery Pack delivers up to 3x more runtime, 20% more power and 2x more recharges than standard lithium-ion batteries. The lithium-ion battery pack features superior pack construction, electronics, and performance providing users more work per charge and more work over pack life than any battery on the market. The rechargeable battery also delivers users with 5.0 Amp-hours of runtime. Each battery pack is durably built for heavy-duty use, runs cooler, and performs in climates below 0 degree F/minis 18 degree C. Its compact, lightweight design allows users to work in tight work spaces and reduces fatigue. Built-in REDLINK Intelligence protects the battery from overloads, preventing users from damaging their cordless power tools in heavy-duty situations, while the discharge protection prevents cell damage. An integrated temperature Management system and individual cell monitoring help to maximize battery life. Switch to Milwaukee's REDLITHIUM XC6.0 Battery Pack to instantly upgrade the runtime and durability of Milwaukee M12 cordless tools.

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From the Manufacturer

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NameM12 12-Volt 3.0Ah Lithium-Ion Compact Battery PackM12 12-Volt Lithium-Ion XC Extended Capacity 6.0Ah Battery PackM12 12-Volt Lithium-Ion 4.0 Ah and 2.0 Ah Battery Packs and Charger Starter KitM18 18-Volt Lithium-Ion High Output 12.0Ah Battery Pack
Battery Amp Hours3.
Voltage (volts)12 V12 V12 V18 V
Used with Equipment TypeSpecialty Power ToolSpecialty Power ToolSpecialty Power ToolSpecialty Power Tool
Power Tool Accessory TypeBatteryBatteryBattery and Charger SetBattery
Number of Total Batteries Included1121
Battery Power TypeLithium IonLithium IonLithium IonLithium Ion
View ProductView ProductView ProductView Product



Product Height (in.)4.50 inProduct Length (in.)2.2 in
Product Width (in.)2.63 in


Battery Amp Hours6.0Battery Power TypeLithium Ion
Charge time (min.)60Charger IncludedCharger Not Included
Color FamilyRedNumber of Total Batteries Included1
Power Tool Accessory TypeBatteryPower Tool FeaturesNo Additional Features
Used with Equipment TypeSpecialty Power ToolVoltage (volts)12 V

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Customer Reviews

  • 4.7
    out of 3,259 reviews
  • 90%recommend this product
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Showing 1-10 of 3,259 reviews
Not what you would expect from Milwaukee tool
I was using this battery with my M12 5 3/8 circular saw or a M12 Work light. It was almost dead whenever I initially opened up the packaging. It was never able to be recharged by any other charger than Milwaukee tools slowest 12 volt charger and would show broken battery when plugged into a M18/M12 Rapid Charger. Hopefully this issue can be resolved quickly it's my first bad battery in 4years and I have an extensive collection.
Response from Customer ServiceJul 29, 2022
Hello Skilled1! We are sorry to hear about your experience with your M12™ REDLITHIUM™ XC6.0 Battery. We will be in contact with you via email for more information! Thank you-Social Team
    XC6.0 wont charge
    It charged the first time (or i think it did), then after that i get the red/green blink and won't charge. None of my other M12 batteries have that problem. I'm going to imagine it's a M12 XC6.0 problem. To top it off, the XC6.0 burned up one of my chargers. I put the battery on the charger, i got the infamous Red/green/red flash and the charger died. I tried the XC6.0 battery on another charger and the same red/green flash, then a solid red/green. I pulled the battery.
    Response from Milwaukee ToolMay 31, 2022
    Xavier, we are sorry to hear about this. Could you send us an email at socialmedia@milwaukeetool.com, so we can assist? Thank you - Social team
      I would NOT buy this product again
      I have nearly all the tools available for the 12v system with multiple 1.5&2.0 batteries and never had an issue. Bought an xc6.0 for the die grinder tool and have had nothing but issues. Red and green lights flash when attempting to charge it in multiple chargers that have no issues charging the smaller batteries. Totally disappointed and enraged I wasted the money.
      Response from Milwaukee ToolMay 25, 2022
      Thanks for your review! This battery comes equipped with a 3 Year Limited Warranty, we recommend sending it in for evaluation by one of our factory-trained technicians. To do so you have a couple of options. The first is to return the tool to us for repair utilizing our eService portal - http://bit.ly/2cwwBwJ. This allows you to send it to us, free of charge, to be evaluated by Milwaukee technicians to determine if your repair is covered under warranty or to provide an estimated max repair price. All tools are repaired with genuine Milwaukee parts and the average turnaround time is about 7-10 business days. You can also have your tool repaired through your nearest authorized service. You can find your nearest center here - http://bit.ly/2rn6crF. Otherwise, you can always give us a call at 1-800-SAWDUST.
        Waste of money
        Does charge anymore. Have only had this m12 battery for a couple months. Now it just flashes. I thought milwaukee batteries were awesome? Maybe the m18s are but not the m12s
        Response from Milwaukee ToolApr 15, 2022
        Hello, this is Cayla with Milwaukee Tool. Thanks for your review. We would like the opportunity to investigate your feedback further on your Milwaukee M12 12-Volt Lithium-Ion XC Extended Capacity 6.0Ah Battery Pack. We would value hearing your input on why this product didn’t meet your expectations and how we can improve in the future. Please feel free to contact us directly at socialmedia@milwaukeetool.com so we can get this matter resolved as soon as possible for you. Thank You
          50-50 chance on getting a good battery
          I have ten of the 6.0 batteries and only five will charge. 3 of them are less a year old. I’ve got plenty of 3.0 and 4.0 batteries that I’ve had for years and none of them have ever flashed red and green. There is obviously a big problem with the 6.0 batteries considering every negative review is the same red and green flashing problem. I have invested so much money in both the 18 and 12 volt lines that it would cost me many thousands of dollars to switch brands.
          Response from Customer ServiceApr 14, 2022
          Hello! Thank you for your review! We are sorry that this is your experience with the M12™ REDLITHIUM™ XC6.0 Battery. We would like to gain some additional details. We will email you shortly. -Cayla with Milwaukee Tool
            A lot of 1 star reviews and issues
            I bought one of these because I disliked the performance and styling of the 2.0's I had. I've had 1 for over a year and just recently got another, along with x2 4.0's and they don't have the issues mentioned. I'm also not kind to my tools; I use them for anything and everything, from below zero temperatures to being a temporary hammer. The only thing I don't do is store the batteries in the cold. I'm not posting this to refute the claims being made, only to state that a lot of us who don't have issues with the 6.0's don't really think twice since they worked for us. I for one recommend these if you want to get the most bang out of your M12 tools.
              • Recommended
              These 6.0 batteries just go out & Wont charge
              I have over $15k in milwaukee tools & batteries. I love all of their products except these dang 6.0 m12 batteries. I don’t use my m12 stuff as often as my m18 but I’m starting to use them more. I have 2 m12 6.0 batteries that just blink red & green & will not charge. I used each battery maybe 8-10 times. I keep them charged up so they don’t die down so far where they can’t be recharged. What gives??
              Response from Customer ServiceApr 5, 2022
              Hello! We would like to learn more about your experience with the M12™ REDLITHIUM™ XC6.0 Battery. We will contact you via email to gain additional information. Thanks! -Cayla with Milwaukee Tool.
                I would have to buy again because I have too
                I have almost every m12 tool made, and I love the m12 fuel, but the larger 4 and 6 amp/he batteries have given me the same problem that other people have. Small drops even falling off chairs and small step ladders end up breaking the tabs. On some of my tools I have to use the larger amp/he batteries because they eat up the smaller ones, i like that bigger batteries seem to make the tools sit more stable, but they seem so fragile. I have spent almost as much on batteries as i have on tools and that's sad. I just love the m12 line though, the size to power ratio is perfect for me
                  • Recommended
                  good battery for the higher powered m12 tools and nice bag
                  nice not having to change out the typical 2ah batteries twice as frequently compared to the 4ah units. never hurts having more bags. I like to use them for less used tools to make easy to grab "kits" for when they are needed
                    • Recommended
                    2 found this review helpful
                    Much better than the m18 so far. They hold charge...
                    Much better than the m18 so far. They hold charge 2 times longer
                    • Verified Purchase
                    2 found this review helpful
                    Showing 1-10 of 3,259 reviews