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One of the many reasons Milwaukee is considered one of the most important cordless power tool brands on the market today is that the company is constantly innovating and investing in new technologies. Just about everything that sets its tools apart — from its popular RedLithium battery systems to its One-Key tracking and management system — is a technology developed exclusively for Milwaukee products. These proprietary technologies help distinguish Milwaukee from its competitors and keep the brand’s products on the cutting edge of the industry.
A significant part of how Milwaukee’s research and development division operates is through acquiring patents. These protect the company’s proprietary technology, ensuring that you will only find these truly advanced features on Milwaukee products. Patents are often filed months or even years before you will actually see the tools that use them on hardware store shelves, so it can be difficult to tell when you might actually be able to buy them. It’s also not guaranteed that Milwaukee will actually use these patents, as any number of factors could lead to their cancellation before they’re sold. Even so, looking at the technologies that the company has recently secured the rights to can often be a strong indicator of what types of products the brand is likely to release next.
1. Battery-Powered Portable Cooler
Milwaukee already makes a host of different accessories that help working professionals improve their workspace, such as its popular line of Packout coolers. Even so, these still rely on ice or cold packs to keep things cool, which costs money and requires extra steps. One of the patents that Milwaukee filed in late 2025 and has continued to revise in the months since is for a battery-powered portable cooler.
This is an insulated cooler with an active refrigeration unit featuring an electric compressor, condenser, expansion valve, evaporator, and circulation fan built in. So it doesn’t just keep cold things cold — it actively cools them. All of this fits in a cooling compartment that takes up about a third of the total volume, leaving two-thirds for storage. As you might have guessed, this is designed to be powered by the Milwaukee M18 battery system. But it can also be powered by a standard DC cord if you have access to one, and it could even include an onboard charger that can charge one or more attached battery packs.
The patent also describes a user interface with a display that shows both the target temperature and the current temperature inside the compartment. This allows users to actively control both power and temperature. The cooler itself is designed to be Packout-compatible, with attachment fittings on top, an extendable handle, and large wheels on the bottom. The patent shows it also having additional features such as USB Type-C ports, a quick cooling mode, and — of course — a bottle opener on the side of the case.
2. Food Warming Device
As cool as having a working refrigeration system on the job site is, you don’t always need a cold lunch. Cold-cut sandwiches are fine now and then, but sometimes it’s nice to have hot food too. That’s why it’s so exciting that Milwaukee appears to be developing a food warming device as well. The initial filing for this was in June of last year, and there are new updates pending.
This isn’t a microwave or a portable stovetop. Rather, it’s an insulated case with resistive heating elements built into the bottom and walls. Think of it like a slow cooker that uses gentle heat to warm food from the outside in. These heating elements appear to have two different heat levels, which can be set through a user interface display — one for quickly warming your food and one for slowly bringing it up to temperature. The user can set conditions for these modes to activate, so their food is warm and ready by a specific time if they take their lunch at a specific hour.
The warmer, like the cooler, can operate on M18 battery power or through a DC power connection. The display can check the battery’s current charge and let you know if it still has enough juice to heat your food to the desired temperature. This is also Packout compatible, so you can stack it right on top of the cooler and cart it in with the rest of your gear if needed.
3. Work Light With Context-Aware Control
Milwaukee already makes a variety of lighting solutions, but all of these are fairly simple in their operation. Pop in a battery or plug in a cord, turn on a light, and adjust brightness. These all rely on human input to change how they function. One of the company’s newer patents is for smart technology that would allow a work light to automatically react to specific environmental contexts.
This one appears to still be in the planning stages, but it describes “a light source comprising a plurality of light-emitting diodes (LEDs), wherein the lighting device is a portable lighting device and at least two subgroups of LEDs of the plurality of LEDs are separately controllable to illuminate at different brightness levels.” This fixed rocket light hardware would work alongside an electronic processor that powers the patented smart lighting control system, and a thermal imaging camera that captures visual data about the worksite. These three components together can dim or brighten individual diodes in the light based on what the camera observes and what the processor contextualizes.
This could have several practical applications, many of which relate to extending the battery life of the light itself. It could allow the light to detect when a worker is in the area and focus lighting on that specific workspace instead of illuminating the entire area, saving power. It could also power itself down when it detects that no workers are in the area. The patent also states that it could automatically dim when cars drive by, so as not to blind drivers.
4. Modular Power Supply for Battery-Powered Tools
As battery power has been replacing more and more tools that have traditionally been powered by gas engines, a range of solutions have been proposed to provide these tools with enough voltage to deliver gas-like performance. DeWalt, for example, offers the Flexvolt and Flexvolt Advantage systems, which can operate at 20V or 60V. Milwaukee has been filing an ongoing patent that started in July 2025 that appears to take a different approach.
The patent is for a modular power supply system that can serve as a collective power source for tools. The designs show that this would be a wearable backpack. The description states it would host “at least one adapter configured to receive the common load and electrically couple the common load to at least one of the plurality of batteries for supplying power to the common load.” Illustrations included in the patent show that this would accept up to four M18 batteries along the spine, which could be connected to a tether that feeds into two separate adapters designed to fit into standard M18 battery slots. This likely means the backpack could be used with tools that accept more than one battery at a time, such as the M18 Fuel Dual Battery String Trimmer or the M18 Fuel Dual Battery Backpack Blower. The patent also states that these could be run in series or parallel, allowing them to either generate more power by boosting voltage or increase longevity by extending capacity.
5. Portable Battery Charger
Many of the new patents are for the brand’s popular M18 battery system, but there is at least one interesting patent in the works for Milwaukee’s M12 portable productivity system. This one is for a portable battery charger that uses the system’s smaller batteries to create a compact, lightweight power source.
This is a small case with two bays for M12 Redlithium batteries. While it’s called a portable battery charger in the patent, the device is actually capable of moving power in two directions. You could use it to charge any inserted batteries, or as a power bank that draws power from them. The unit in the illustration has two USB Type-C ports, with one marked as input/output and the other marked as output only. That’s not to say this is the only possible configuration, however. The patent also states that “other configurations may utilize more ports, have different port types (e.g., USB-A, AC, etc.), include discrete input and output ports, and output at a variety of voltages and wattages as understood in the art.”
The housing has a heater, temperature sensor, and an electronic processor that can measure battery temperature and shut it off if it overheats or warm it up if it gets too cold. The notes suggest that the case’s latched lid may contain a seal to keep out water, dirt, and even cold air. The case also has a belt clip option, making it easy to transport and use on the go. Some illustrations also depict a push-button interface for enabling and disabling charging or cycling through different power modes.
