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This item is eligible for return within 30 days of receipt
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
20 left in stock
Arrives
Wednesday, Jul 15
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Features
- Fast Charging: 3 times faster when charged with Milwaukee USB rechargeable products or the REDLITHIUM USB charger.
- Optimized charge time: Only 2 hours charging with Milwaukee USB chargers or 48-59-2012 REDLITHIUM USB chargers.
- Full Compatibility: Powers all USB rechargeable Milwaukee products, extending your usage options.
- Portable and efficient design: Compact and high performance, ideal for flashlights and other Milwaukee USB tools.
Description
Our REDLTIHIUM™ USB 3.0AH battery provides more autonomy, longer life and faster charging. This USB 3.0 battery provides up to 20% more capacity for Milwaukee USB rechargeable solutions compared to the first generation REDLITHIUM™ USB battery (48-11-2130). With increased capacity, users get longer runtime and more power for performance across all MILWAUKEE® USB rechargeable solutions. Eliminate the need for disposable batteries with these USB rechargeable batteries that provide more charges for longer life with a single battery. You'll get back to work faster with 3x faster charging times by using a Milwaukee USB rechargeable product or the REDLITHIUM ™ (48-59-2012) USB power supply and charger.
Number of Batteries: 1 Lithium Ion batteries required.
Brand: Milwaukee
Battery Cell Composition: Lithium Ion
Battery Capacity: 3 Amp Hours
Unit Count: 1.0 Count
Number of Batteries: 1 Lithium Ion batteries required.
Brand: Milwaukee
Model Number: 48-11-2131
Model Name: Milwaukee Bateria 4V USB Para Lanternas 48-11-2131
UPC: 045242576685
Manufacturer: Milwaukee Tools
External Testing Certification: Não aplicável
Built-In Media: Loose Item
Item Type Name: USB REDLITHIUM BATTERY
Battery Capacity: 3 Amp Hours
Voltage: 5 Volts
Reusability: Rechargeable
Amperage: 3 Amps
Unit Count: 1.0 Count
Battery Weight: 0.12 Pounds
Item Dimensions: 6 x 4 x 1 inches
Item Weight: 0.12 Pounds
Battery Cell Type: Lithium Ion
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Jul 15
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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Learn more about financing & leasing here.
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Top Amazon Reviews
Been running these for about a year now with zero issues. They charge well, hold power like they should, and have been completely reliable. One thing I always recommend—have at least two backup batteries. It just makes life easier, especially when you’re using your flashlight regularly. You’re never stuck waiting on a charge, just swap and keep going. They’re compact, easy to carry, and exactly what you expect from Milwaukee—dependable and built right. Overall, no complaints. Solid battery and def
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Reviewed in the United States on April 3, 2026 by Hamza Ramić
Solid battery. Lasts a long time. Is rechargeable. Good for the price
Reviewed in the United States on December 29, 2025 by Dayton Sparks
Fits Milwaukee head lights, easy to install, long battery life
Reviewed in the United States on February 16, 2026 by Di3go
Perfect!
Reviewed in the United States on January 4, 2026 by Ray DeLue
I have three of the model 2110-20 700 lumen flashlights. The first one was given to me because of the position I held at the company and a few flashlights were thrown in with a six figure order of tools. I found it to be a great flashlight and I bought two for myself off of Amazon. Now to be clear because it seems that some were sold with other lower quality batteries for some reason. All of them I have come with the best Milwaukee batteries which lasted about two years. Now this is where it gets insane. I have the third flashlight because at the time it only cost five or six more dollars to buy a completely new flashlight with battery than it cost to buy a battery alone. A battery cost over $50 and the new flashlight cost less than $60. Now they want $50 to $55 for a battery and $150 for a flashlight. Both are insane and a waste of money. I bought a model 2110-20 700 lumen flashlights from Amazon on 08-27-2020 and paid $57 for it. They wanted over $50 for a battery and I refused to pay as much for a battery as I could buy a new flashlight for. I don’t care what kind of logistics problems they have getting them here from China. They can’t triple the price because they are worth what they are worth and the flashlight is not worth $150. Now as for the problems that some people have had with the batteries not lasting or holding a charge those batteries had a part number of 48-11-2130 and they improved the design of the battery and the new part number that you want is 48-11-2131. So the first thing you need to do if you buy a new battery before you even open it is to check the part number and make certain that they are not trying to cheat you by selling you a battery of the old design which are still on shelves in some warehouses. So I tell you what I am going to do. I am going to buy a pair of the replacement batteries that only cost $25 for two batteries and test them. I will tell you a secret about batteries that you might find hard to believe. If you want to buy rechargeable batteries that are the very best you can get then simply buy the Amazon brand because not only are they well priced they are twice the quality of some very expensive name brands and my battery case proves it. It is impossible for a rechargeable battery to reach voltage due to the design of rechargeable batteries. However the closer they come to voltage the better the quality of the battery is. Some rechargeable battery designs are better than others but none of them can ever reach common voltage for the battery of its size. Now by going to the much less expensive battery I will be dropping from 3000 MA down to 2000 MA and 2.4 volts but I seriously doubt that it will make any difference in a normal work day and you will have two batteries to work with if you have an extreme day. However I would recommend that you remove or change the battery as little as possible. You want to always simply twist the flashlight to expose the USB port and connect to it to charge. You want to have to completely unscrew the end off of the flashlight to remove the battery holder and battery as few times as possible. So if you use the flashlight for over 4 hours continuously without any chance to recharge then it is worth the cost to pay over $50 for a 3000 MA battery that is 4 volts from Milwaukee because you have a special need that most people don’t have. However I can’t stress enough that you want to use the USB port to recharge and not take the flashlight apart. There is enough problems with them just untwisting them to expose the USB port to charge. Now I want to be clear that you are not going to have 700 lumens with the cheaper battery that is 2.4 volts verses the battery that has 4 volts but the question quickly becomes do you truly need 700 lumens for what you are doing? In over 75% of cases the answer is no. I certainly have bought my last flashlight because I didn’t even pay $150 for my 500 lumen light with green laser that they tell me will put a dot on the side of a building a mile away. I only need to use that green dot up to 75 yards at most. I was born but not yesterday. A 700 lumen flashlight would be very useful in certain situations but you can do much better for $150. I like mine and at $57 and I considered them expensive for what they can do at that price. However at $150 I just consider that a fool and his money being quickly parted. I bought a Milwaukee battery model 48-11-2131 on 10-30-22 and I paid $27.66 for it. I would explain it all to you but Amazon would lose their mind if I did and I am sure delete everything I have said and I don’t want that because hopefully a few people will research further based on what I have said. I normally just let it go but this time I am not going to because I am too knowledgeable on the situation and I don’t want good people to waste their money that they worked hard for when they can get what they need for far less money. The best thing about the flashlight is that they come with a really nice USB cable and I put one of them in my truck so I can charge my three flashlights even if the power goes off when I need them most. They are also very bright for a flashlight so small and they are the perfect size to wrap your hand around if you need to so you don’t hurt your hand.
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Reviewed in the United States on December 30, 2022 by James M.
I have this on my leveling laser and it works fine. All the markings on the battery look exactly like the one that came with it originally so we’ll see how it holds up. I did mark it with a paint marker so I can tell them apart. I make sure to swap them out so they get even use and I cannot tell the difference. If it breaks I’ll come back and update.
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Reviewed in the United States on November 28, 2025 by El Guero
It was perfect
Reviewed in the United States on March 13, 2026 by TOM ROHAN
Whatever flashlight, etc., that you power with this battery is probably a great deal because you can buy a replacement battery. With many small tools or lights powered by a rechargeable battery, once the battery no longer holds a charge, which happens eventually to all rechargeable batteries, you have to discard the whole tool. It's awesome to be able to buy a new battery and keep going! I use it for a Milwaukee headlamp, Internet # 323108248, Model # 2163-21, Store SKU # 1008709273
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Reviewed in the United States on November 6, 2025 by Scott