AOBEN 21V Cordless Impact Wrench, 400N.m Max vs ReliaRoads 900 Ft-lbs Cordless Impact Wrench, 1/
Updated August 2026 — AOBEN 21V Cordless Impact Wrench, 400N.m Max wins on battery life and ergonomics, ReliaRoads 900 Ft-lbs Cordless Impact Wrench, 1/ wins on compatibility and power.
The AOBEN 21V Cordless Impact Wrench is a more budget-friendly option suitable for general tasks, while the ReliaRoads model excels in high-torque applications.
Why AOBEN 21V Cordless Impact Wrench, 400N.m Max is better
Price
AOBEN is cheaper by $16
Weight
AOBEN is lighter, making it easier to handle
Included Accessories
AOBEN comes with a battery and sockets
Why ReliaRoads 900 Ft-lbs Cordless Impact Wrench, 1/ is better
Torque
ReliaRoads offers 900 ft-lbs compared to AOBEN's 400 N.m
Speed Modes
ReliaRoads has 3-speed settings for better control
Battery Compatibility
ReliaRoads is compatible with DeWALT batteries
Overall score
Specifications
| Spec | AOBEN 21V Cordless Impact Wrench, 400N.m Max | ReliaRoads 900 Ft-lbs Cordless Impact Wrench, 1/ |
|---|---|---|
| Max Torque | 400 N.m | 900 ft-lbs |
| Speed Modes | 1 | 3 |
| Battery Included | Yes | No |
| Weight | 5 lbs | 6 lbs |
| Bestseller Rank | 46178 | 15813 |
Dimension comparison
Overview of the AOBEN 21V Cordless Impact Wrench
The AOBEN 21V Cordless Impact Wrench is a robust tool designed for both household maintenance and small-scale construction projects. Priced at $53.99, it offers a maximum torque of 400 N.m and a speed of up to 3000 rpm, making it a powerful option for users needing reliability. With a bestseller rank of 46,178, it is popular among consumers looking for an efficient impact wrench. This model stands out due to its inclusion of a 4.0Ah Li-ion battery, six driver sockets, and a fast charger, enhancing convenience and usability.
Overview of the ReliaRoads 900 Ft-lbs Cordless Impact Wrench
On the other hand, the ReliaRoads 900 Ft-lbs Cordless Impact Wrench is a more powerful option, priced at $69.97. It delivers a remarkable torque of 900 ft-lbs, catering to more demanding tasks such as automotive repairs and industrial maintenance. This impact wrench is compatible with DeWALT 20V MAX battery systems, which provides users the flexibility of using existing batteries. With a bestseller rank of 15,813, it has gained traction among professionals and DIY enthusiasts looking for high performance in their tools.
Performance Comparison
In terms of performance, the AOBEN 21V Cordless Impact Wrench offers a maximum torque of 400 N.m, which is suitable for routine tasks. Conversely, the ReliaRoads impact wrench boasts an impressive 900 ft-lbs of torque, making it optimal for heavy-duty applications. The AOBEN model's speed reaches 3000 rpm, allowing for efficient work, while the ReliaRoads features a three-speed mode (450-650-900 ft-lbs) that provides versatility and control for varying tasks. Users looking for sheer power may find the ReliaRoads model more appealing, especially for challenging jobs.
Battery and Charging Capabilities
The AOBEN 21V Cordless Impact Wrench is equipped with a 4.0Ah Li-ion battery, designed to provide extended usage without the concern of running out of power mid-task. The battery can be fully charged quickly, enhancing work efficiency. In contrast, the ReliaRoads model does not include a battery or charger, relying on users to have compatible DeWALT 20V MAX batteries. This can be a drawback for those who do not already own such batteries. Ultimately, while the AOBEN provides a complete package, the ReliaRoads gives users the freedom to use their existing battery systems.
Design and Ergonomics
When it comes to design and ergonomics, both impact wrenches cater to user comfort. The AOBEN model features a lightweight design with a soft grip handle, allowing for extended use without fatigue. This tool is crafted to alleviate discomfort during longer periods of operation, which is beneficial for home users. The ReliaRoads impact wrench also includes an ergonomic anti-slip grip and a built-in LED light for improved visibility in dark workspaces. While both offer comfort, the AOBEN's complete package may appeal more to casual users, while the ReliaRoads focuses on professional-grade features.
Versatility and Use Cases
The versatility of the AOBEN 21V Cordless Impact Wrench allows it to be used in various applications, from motorcycle maintenance to light construction tasks. With its variable speed control, users can easily adjust the power based on the job's requirements. The ReliaRoads model, however, is engineered for more demanding applications, particularly in automotive repair and industrial settings due to its higher torque output. Users needing a tool primarily for household tasks may prefer the AOBEN, while those engaged in heavier work might lean towards the ReliaRoads model.
Price Analysis
The AOBEN 21V Cordless Impact Wrench is currently priced at $53.99, making it about 17% cheaper than the ReliaRoads model, which retails for $69.97. This price difference makes the AOBEN a more attractive option for budget-conscious consumers or those who require a reliable tool for everyday tasks. However, the ReliaRoads impact wrench may justify its higher price tag through its superior torque and professional-grade design, appealing to users who prioritize performance over cost.
Which should you buy?
Deciding between the AOBEN 21V Cordless Impact Wrench and the ReliaRoads 900 Ft-lbs Cordless Impact Wrench ultimately depends on your specific needs. If you seek a cost-effective, versatile tool for general home maintenance and light construction, the AOBEN model is an excellent choice, especially with its complete package of accessories. However, for those requiring high torque for heavy-duty applications, the ReliaRoads model offers unparalleled power and efficiency, albeit at a higher price. Consider your individual requirements, existing battery compatibility, and budget to determine which impact wrench best fits your needs.

