Milwaukee M18 REDLITHIUM High Output XC6.0 Battery Pack (2 Pk)

Milwaukee's M18 REDLITHIUM High Output XC6.0 Battery Pack is a significant upgrade for anyone invested in the M18 ecosystem. From the moment I inserted these batteries into my tools, the difference was palpable. These batteries are designed to provide increased power and cooler operation, which is evident in their performance.

First, let's talk about power. The 6.0Ah batteries utilize the newer 21700 lithium-ion cells, which are a step up from the older 18650 cells found in previous models. This upgrade translates to more power under load, making my tools feel more robust and capable. For instance, when using my M18 hammer drill and circular saw, the tools exhibited a noticeable boost in performance. The drill was able to maintain high torque levels even during intense tasks, like drilling through dense pressure-treated lumber. Similarly, the circular saw cut through thick plywood with ease, maintaining speed and precision without bogging down.

One of the most impressive aspects of these batteries is their ability to run cooler. I performed several extended tasks to test this feature, including drilling numerous holes and making continuous cuts. The batteries indeed ran cooler compared to my older 5.0Ah packs. Even after prolonged use, the batteries were only slightly warm to the touch, which reassures me about their thermal management and longevity.

Another major highlight is the runtime. The XC6.0 batteries offer a significant increase in operation time, allowing me to work longer without needing to recharge. For example, using the batteries with my M18 shop vac, I was able to run it continuously for about 15 minutes. This extended runtime is particularly beneficial for high-demand tools like the reciprocating saw and the angle grinder, which tend to drain batteries quickly. The increased capacity means fewer interruptions, making my workflow smoother and more efficient.

The build quality of these batteries is what I've come to expect from Milwaukee—robust and durable. The durable construction is evident in the feel and weight of the batteries. They are slightly heavier and larger than the older models, but this is a small trade-off for the added power and runtime. The integrated fuel gauge is another useful feature, allowing me to quickly check the remaining charge without having to guess, which is especially useful when planning tasks.

Compatibility is also a strong suit for the XC6.0 batteries. They work seamlessly with all my M18 tools, which is a huge plus for anyone deeply invested in the Milwaukee ecosystem. Whether it’s the hammer drill, sawzall, or even the lawn tools, these batteries fit and function perfectly, providing consistent performance across the board.

However, it's not all perfect. One minor issue I've encountered is the heat generated during charging. The batteries do get quite warm, so I would advise against leaving them in the charger overnight. This is a precaution to ensure longevity and safety. Additionally, the packaging of the batteries was quite frustrating to open. The blister pack was difficult to cut through, and I nearly injured myself trying to get the batteries out. Milwaukee could definitely improve on this front to enhance the overall user experience.

Despite these minor drawbacks, the benefits of the M18 REDLITHIUM High Output XC6.0 batteries far outweigh any negatives. Their increased power, longer runtime, and cooler operation make them an excellent addition to any toolkit. For heavy-duty tasks and extended use, these batteries are a game-changer, providing the reliability and performance needed to get the job done efficiently.

In conclusion, I would highly recommend the M18 REDLITHIUM High Output XC6.0 Battery Pack to both professionals and serious DIY enthusiasts. They offer a perfect balance of power, runtime, and durability, making them a worthy investment for anyone looking to enhance their M18 tools' performance. Whether you're on a job site or tackling projects at home, these batteries will undoubtedly improve your workflow and ensure you have the power you need, when you need it.