Dewalt Flexvolt vs Milwaukee M18 Sawzall: A Comprehensive Comparison
When it comes to choosing a powerful and versatile reciprocating saw, two names often rise to the top: Dewalt and Milwaukee. Both brands offer top-notch tools, but which one reigns supreme in the sawzall category? Let's delve into a detailed comparison between the Dewalt Flexvolt and Milwaukee M18 Sawzall to help you make an informed decision.
Understanding the Basics
Before we dive into the specifics, let's quickly understand what sets these saws apart. The Dewalt Flexvolt series is known for its 60V brushless motor and 4.0Ah battery, while the Milwaukee M18 series boasts a 18V brushless motor and a range of battery options. Both are powerful and designed for heavy-duty tasks, but they cater to slightly different user needs.
Power and Performance
Dewalt Flexvolt
The Dewalt DCS389B is a beast, packing a 60V brushless motor that delivers up to 4,000 SPM. This high stroke rate, coupled with the 4.0Ah battery, ensures smooth and efficient cutting through various materials like wood, metal, and even masonry. The T-shank blade change system allows for quick and easy blade changes, further enhancing productivity.

Milwaukee M18
The Milwaukee 2645-20 is no slouch either, featuring an 18V brushless motor that offers up to 2,800 SPM. While it's slightly lower than the Dewalt, it's still more than capable of handling most cutting tasks. The M18 series is known for its durability and longevity, with many users reporting years of reliable service.
Battery and Runtime
Dewalt Flexvolt
The Dewalt Flexvolt battery is a game-changer, offering excellent runtime and the flexibility to power other tools in the Flexvolt series. The 4.0Ah battery provides enough juice for most cutting tasks, and the battery gauge ensures you're always aware of your remaining power.
Milwaukee M18
The Milwaukee M18 series offers a range of battery options, from 2.0Ah to 12.0Ah. This flexibility allows users to choose the runtime that best suits their needs. The REDLINK PLUS Intelligence system ensures optimal performance and protects the battery from overloading and overheating.

Ergonomics and Design
Both saws are designed with user comfort and safety in mind, but they have some key differences.
- Dewalt Flexvolt: The DCS389B features an ergonomic handle with a textured grip for better control. It also has a variable speed trigger and a 4-position blade clamp for versatile cutting.
- Milwaukee M18: The 2645-20 has a similar ergonomic design, but it also includes a built-in dust blower to keep the line of cut visible. It also has a variable speed trigger and a 4-position blade clamp.
Price and Warranty
Both saws are priced competitively, with the Dewalt DCS389B typically being slightly more expensive. However, both tools come with impressive warranties: Dewalt offers a 3-year limited warranty and 1-year free service, while Milwaukee provides a 5-year warranty on the tool and a 2-year warranty on the battery.
Which One Should You Choose?
The choice between the Dewalt Flexvolt and Milwaukee M18 Sawzall depends on your specific needs. If you're looking for raw power and runtime, the Dewalt DCS389B is an excellent choice. However, if you prefer a tool with a proven track record of durability and a range of battery options, the Milwaukee 2645-20 might be the better pick.
Ultimately, both saws are exceptional tools that can handle even the toughest cutting tasks. It's essential to consider your specific needs, budget, and personal preferences when making your decision.
More Details
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