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AOBEN 21V Cordless Impact Wrench, 400N.m Max vs Milwaukee M18 FUEL 3/8" Compact Impact Wrench with

Updated August 2026 — AOBEN 21V Cordless Impact Wrench, 400N.m Max wins on battery life and ergonomics, Milwaukee M18 FUEL 3/8" Compact Impact Wrench with wins on features and power.

The AOBEN 21V Cordless Impact Wrench offers great value and performance for its price, while the Milwaukee M18 FUEL provides advanced features and brand reliability.

Why AOBEN 21V Cordless Impact Wrench, 400N.m Max is better

Price

AOBEN costs $53.99, significantly cheaper than Milwaukee's $164.70.

Torque

AOBEN has a maximum torque of 400 N.m, higher than Milwaukee's 250 ft-lbs.

Battery Included

AOBEN comes with a 4.0Ah battery and charger, while Milwaukee is sold bare.

Why Milwaukee M18 FUEL 3/8" Compact Impact Wrench with is better

Brand Reputation

Milwaukee is a well-established brand known for quality.

Compact Design

Milwaukee is only 4.8 inches long, ideal for tight spaces.

Advanced Features

Milwaukee offers 4-Mode DRIVE CONTROL for precision.

Overall score

AOBEN 21V Cordless Impact Wrench, 400N.m Max
75
Milwaukee M18 FUEL 3/8" Compact Impact Wrench with
85

Specifications

SpecAOBEN 21V Cordless Impact Wrench, 400N.m MaxMilwaukee M18 FUEL 3/8" Compact Impact Wrench with
Price$53.99$164.70
Torque400 N.m250 ft-lbs
Speed3000 RPM0
Battery4.0Ah Li-ionNone
Length04.8"
Sales Rank4617813255

Dimension comparison

AOBEN 21V Cordless Impact Wrench, 400N.m MaxMilwaukee M18 FUEL 3/8" Compact Impact Wrench with

Price Comparison

When considering price, the AOBEN 21V Cordless Impact Wrench is significantly cheaper than the Milwaukee M18 FUEL 3/8" Compact Impact Wrench, costing $53.99 compared to Milwaukee's $164.70. This means that the AOBEN model is about 67% less expensive than its competitor. For those on a budget or looking for a cost-effective option for home maintenance, the AOBEN might be the more appealing choice. However, the price difference also reflects the differing features and capabilities of each tool, which may justify the higher cost of the Milwaukee model for some users.

Performance

In terms of performance, the AOBEN offers a maximum torque of 400 N.m and a speed of 3000 RPM, making it a powerful tool for various tasks. In contrast, the Milwaukee wrench delivers up to 250 ft-lbs of nut-busting torque, which is impressive but less than the AOBEN. While both tools are designed for heavy-duty use, the AOBEN's higher torque may make it more suitable for tougher jobs. The Milwaukee does have a POWERSTATE Brushless motor, which enhances its efficiency and longevity, but the raw torque advantage of the AOBEN cannot be overlooked.

Battery and Charging

The AOBEN comes equipped with a 4.0Ah Li-ion battery, which is essential for extended use without interruptions. This battery is designed to prevent power loss during work, allowing for uninterrupted operation, and can be fully charged in a few hours. The Milwaukee model, however, is sold as a bare tool without a battery or charger included, which means additional costs for the user if they do not already own compatible batteries. This makes the AOBEN a more user-friendly option for those who need a complete package right out of the box.

Usability and Design

The AOBEN is designed with user comfort in mind, featuring a lightweight build and an ergonomic soft grip handle that reduces fatigue during extended use. This thoughtful design makes it suitable for both household tasks and small-scale construction projects. The Milwaukee, on the other hand, is compact at just 4.8 inches in length, making it ideal for tight spaces. It also boasts tri-LED lighting to enhance visibility during work. While both tools have their strengths in usability, the AOBEN's ergonomic focus may appeal more to those who prioritize comfort during longer jobs.

Features and Functionality

Both impact wrenches offer unique functionalities that cater to different user needs. The AOBEN features variable speed control, allowing the user to adjust the speed by simply pressing the button, which can be beneficial for precision tasks. Additionally, it comes with six impact sockets, making it a versatile option right out of the box. Conversely, the Milwaukee offers a 4-Mode DRIVE CONTROL, which allows users to select pre-set RPM and IPM levels for enhanced precision. This feature is particularly useful for those who require specific torque settings to prevent overtightening, showcasing the Milwaukee's advanced technological capabilities.

Brand Reputation and Sales Rank

In terms of brand reputation, Milwaukee is a well-established name in power tools, often recognized for its quality and durability. The Milwaukee M18 FUEL model has a sales rank of 13,255, indicating a strong performance in the market. The AOBEN, while a solid tool, has a sales rank of 46,178, suggesting it may not be as widely recognized as Milwaukee. This difference in brand reputation may influence buyer confidence, with some consumers preferring the reliability associated with Milwaukee's long-standing presence in the industry.

Warranty and Customer Support

Customer support and warranty options can significantly impact a buyer's decision. The AOBEN provides after-sales support, encouraging users to reach out for any issues, which may appeal to those who value responsive customer service. The Milwaukee tool's warranty details were not provided, which could be a concern for potential buyers. A strong warranty often indicates a company's confidence in its product and provides peace of mind for the consumer. For buyers who prioritize warranty and support, AOBEN may have the edge in this area.

Which should you buy?

Ultimately, the decision between the AOBEN 21V Cordless Impact Wrench and the Milwaukee M18 FUEL 3/8" Compact Impact Wrench depends on your specific needs and budget. If you are looking for a powerful, cost-effective tool for general maintenance and light construction, the AOBEN is hard to beat at $53.99. However, for users who require advanced features, brand reliability, and the ability to work in tight spaces, the Milwaukee, despite its higher price of $164.70, offers impressive functionality and build quality. Consider what features matter most to you, as both tools have distinct advantages that cater to different user preferences.