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Milwaukee REDLITHIUM USB 4V 3Ah Lithium Ion Power Tool Battery Pack 48-11-2131 Discussion

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Milwaukee REDLITHIUM USB 4V 3Ah Lithium Ion Power Tool Battery Pack

SKU# 48-11-2131
3.1 out of 5 Customer Rating
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Milwaukee REDLITHIUM USB 4V 3Ah Lithium Ion Power Tool Battery Pack
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About this product

Milwaukee REDLITHIUM USB 4V 3Ah Lithium Ion Power Tool Battery Pack

Step up your power game with the Milwaukee® REDLITHIUM™ USB 3.0Ah Battery Pack—built for longer runtime, a longer lifespan, and up to 3X faster charging than standard options. Offering 20% more capacity than the original REDLITHIUM™ USB battery, it delivers reliable performance across all Milwaukee USB Rechargeable tools. Compact yet powerful, this battery is made for professionals who need dependable, portable energy that lasts. With support for up to 1,000 recharges, it’s built to go the distance. Use it with any Milwaukee USB Rechargeable device or pair it with the REDLITHIUM™ USB Portable Power Source & Charger (48-59-2012) to stay powered up with less downtime. Whether you're running headlamps, lights, or inspection tools, this battery keeps everything operating at peak performance—so you can focus on the job, not your battery life.

Manuals

Features

Compatible with Milwaukee® USB rechargeable products
Recharges in 2 hours
Longer Life: 1,000 Charges
Faster Charging: 3X Faster Charge Time (*When Charged With Milwaukee® USB Rechargeable Products or REDLITHIUM® USB Charger)
Battery Charge Time is 2 Hrs Inside Milwaukee® USB Rechargeable Products or With 48-59-2012 REDLITHIUM® USB Portable Power Source and Charger
Two Year Warranty on REDLITHIUM® USB Battery

Specifications

Brand Name
Milwaukee
Amp-hour
3.0
Assembled Weight (lbs)
0.12
California Proposition 65 Warning Required
No
Charge Time (hrs)
2
Charger Included
No
Color
Black
Compatibility
Milwaukee® USB Rechargeable Products
Country of Origin
Korea, Republic of
Number of Batteries Included
1
Package Contents
REDLITHIUM USB 3.0AH Battery

Product Condition
New

Rechargeable
Yes
Restrictions
CA Prop 65
Warranty Type
2 Years Limited
Weight (lbs)
0.2

UPC
045242576685

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2 Comments

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Terry Nadosy
2026-10-18T07:36:45.628Z
Joined October 2021

While these batteries for Milwaukee lights are very helpful

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Terry Nadosy
2026-10-18T07:42:44.091Z
Joined October 2021

They have not held up like the original ones, the life of the battery is severly shortened and after 1 year they only hold a charge at 1/2 life or specified rate. I dont know if I recieved a bad batch or Milwaukee made a change to cause this, but if this is the new normal it will definitely change my buying dessions.

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