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Milwaukee

Milwaukee 48-11-1865 M18 REDLITHIUM HIGH OUTPUT XC 6 Ah Lithium-Ion Battery

  • Based on 2,104 reviews
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Availability: Only 9 left in stock, order soon!
Fulfilled by Amazon
Arrives Wednesday, Aug 5
Order within 16 hours and 49 minutes
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Features

  • 50% more runtime, most work/charge of any power tool battery
  • 50% more power to replace 15Amp corded tools & runs 50% cooler
  • Fully compatible with the M18 System, featuring over 150+ tools

Description

The M18 REDLITHIUM HIGH OUTPUT XC 6.0Ah Battery provides 50% more power, runs 50% cooler, and delivers 50% more runtime compared to standard lithium-ion batteries. Fully compatible with over 150 Milwaukee M18 tools.

Number of Batteries: 1 Lithium Ion batteries required. (included)


Brand: Milwaukee


Battery Cell Composition: Lithium Ion


Battery Capacity: 6 amp_hours


Recommended Uses For Product: Tools


Number of Batteries: 1 Lithium Ion batteries required. (included)


Brand: Milwaukee


Model Number: MIL-48-11-1865


Model Name: m18


UPC: 653785783585


Manufacturer: Milwaukee


Warranty Description: 3 year


Battery Cell Type: Lithium Ion


Battery Capacity: 6 amp_hours


Voltage: 18


Reusability: Yes


Amperage: 15 A


Unit Count: 1 count


Battery Weight: 2.3 pounds


Item Dimensions: 5.5 x 3.75 x 3.5 inches


Item Weight: 1.5 pounds


Antenna Location: Tools


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Aug 5

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.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews

    • Long life
Love these batteries, they hold their charge and then some.
Reviewed in the United States on July 13, 2026 by Celeste LeBerthon
    • Actual Milwaukee batteries
Review Image by Oz
Review Image by Oz
I thought this was a scam because of the price, but I check the reviews and I took a chance. It paid off because its actual the Milwaukee brand batteries and they work great. Hold a good charge and perform well. Definitely worth the money.
Reviewed in the United States on July 13, 2026 by Oz
    • Well worth the upgrade.
Great battery. Long lasting compared to the base ones that came with my impact gun. Also allows me to use my leaf blower for an extended period of time without running out of power.
Reviewed in the United States on April 7, 2026 by maurice nolet
    • Milwaukee 2 lg batteries for a special racing transmission fluid exchange cooler 🙌🏼💙
2 - Milwaukee 48 –11 –1865 – M 18 lithium battery replacement, we purchased 2 extra batteries and it is the larger ones Milwaukee is a great brand, these were needed for a special racing device, that rinses & cools down, transmission fluid, it just continues to run through the cooling machine and back into the race car, so there’s no exchange of fluids. There’s no pulling out all fluids and then pouring back in. It’s just constantly on a recycling setting, that cools the transmission fluid even by a few degrees can get you a win 🏆 If you don’t know anything about drag-racing, it’s hard to understand, however, even just 5° could bring you a win - after competition starts going down in drag racing there are 2 racers/lanes & 1 winner 🥇 each round, if you have 32 cars, you can count how much it cuts the class by 50% each round, therefore your rounds start to go faster & faster having a device that can cool your transmission fluid down when you start to become the runner-up and/or in the final race - running this machine could help in a major way! And, this equipment was built specifically for my husbands race team, and required 2 Milwaukee 48 –11 – 1865 lithium, high output, batteries so far so good, they’ve been working great, and my husband takes every caution at recharging any batteries as he’s taught me, don’t do it when they’re hot, wait till they cool down….which works out perfectly when we go out for a round we are gone for at least 45-1 hr & when we come back to recharged Milwaukee batteries, they’re cool, they are charged, & ready to run the transmission fluid exchange/cooler. Battery life is good, and the battery capacity is large so it’s great 👍🏼 so far we just purchased these a couple weeks ago, if anything changes, I’ll come back and re-review if necessary Condition was great, compatibility was perfect, authenticity perfect, they were a little bit expensive. I would’ve loved to see them on sale at some point, but it seems like any chargers we need like DeWalt, Milwaukee, those are the main 2 they never go on sale and they’re always quite expensive, so I would love you to work on the value for the money on both DeWalt & Milwaukee ... show more
Reviewed in the United States on June 18, 2026 by BNStyle
    • High power, long lasting
Very good battery. Lasts longer than previous battery. I just wish they were not so expensive. I would probably buy more often.
Reviewed in the United States on April 21, 2026 by George
    • Perhaps a reason this battery is discounted…
Be mindful these discounted batteries may likely all be new, but are most likely out of warranty based on manufacture date on the serial number of battery. Purchased this battery new. Packaging looked a little weathered but otherwise looked new and believe battery is “new.” However the battery is new and four years old but charged fine. I’m guessing these batteries are leftover unsold batteries sold at a discount due to being out of warranty or close to it. So what you are buying could be a one shot deal with no warranty. The batteries may work just fine but know if you have a warranty issue, it won’t be backed up from most online Amazon sellers. A recognized Milwaukee vendor (ie Home Depot) usually recognize date of sale as start of warranty. Worth a gamble though as these 6.0 amh batteries are usually among the better high output batteries for reliability. ... show more
Reviewed in the United States on February 29, 2024 by John
    • Big boy battery for big boy things
Yep, it’s a high-output M18 Milwaukee battery. It does its job and does it well. You need to use a rotohammer to drill some holes in concrete and you need a battery that’s going to last you the entire day? This guys got you. You tired of your wimpy batteries dying after cutting some pipe with your bandsaw or hackzall? This guys got you. This guy is on the beefier side but if you’re a big boy, you’re gonna be a-okay. ... show more
Reviewed in the United States on June 9, 2026 by Jacob
    • Would recommend
Good product
Reviewed in the United States on May 26, 2026 by Rphipps

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