Test result preview
Manufacturer’s product description
The GJEMAX 18V Cordless Impact Wrench is a versatile tool set for DIY enthusiasts working on home or vehicle projects. With a maximum torque of 520 Nm, three power settings, and a 3-in-1 function (screwing, drilling, and loosening nuts), the tool is suitable for various applications such as tire changes or assembly work.
The extensive range of accessories is particularly impressive: the set includes socket wrenches, drill bits, a bit set, and a sturdy tool case, so you can get started right away. Also practical is the powerful 6.0Ah battery, which, according to the manufacturer, offers a long runtime and is compatible with standard 18V systems. The easy handling and variable power control allow for good control while working.
Due to the powerful battery, the tool is slightly heavier, which can be noticeable, especially during prolonged use.
Advantages
- High torque of up to 520 Nm
- 3-in-1 function (screwing, drilling, loosening nuts)
- Extensive range of accessories
Disadvantages
- Heavy weight due to large battery
First impression
Packaging and contents
Here, we take a closer look at the packaging. Sustainability is becoming an increasingly important factor. In addition, of course, adequate protection of the product must be ensured. Is the contents of the package complete, and does the manufacturer make it as easy as possible for me to use the product right away?
Here, we take a closer look at the packaging. Sustainability is becoming an increasingly important factor. In addition, of course, adequate protection of the product must be ensured. Is the packaging complete, and does the manufacturer make it as easy as possible for me to use the product right away?
show moreCriterion
Comment
Score achieved*
Product protection
Box is sturdy, product is adequately protected
Points
Sustainability of packaging
Unnecessary packaging waste has been eliminated; the plastic film protects the product components
Points
Package contents & scope
Complete
Points
Instructions
Product is self-explanatory; instructions for use available in multiple languages
Points
OVERALL
95
Points
Weighting: 20%
*The maximum score is 100 points
The GJEMAX 18V cordless impact wrench made a solid and well-organized impression right from the moment it was unpacked. The tool comes in a sturdy carrying case, which is housed in a standard shipping box and reliably protects the contents from damage. A particularly positive feature is that all accessories—such as sockets, bits, drill bits, and the battery —are neatly arranged and securely fastened, ensuring nothing shifts during transport.
The powerful battery and charger are neatly packaged and can be put to use quickly. Operating the tool is largely intuitive, so you can start working right away. An instruction manual is included, though it is rather brief and could be more detailed in some areas. Overall, the neat packaging and organized arrangement of the accessories leave a positive first impression and convey the sense of a well-thought-out complete set.
A multilingual user manual is included with the product.

First time in hand
Product build quality and appearance
Before moving on to the practical test, we take a close look at the product’s build quality. How high-quality are the materials used? Are the feel and appearance satisfactory?
Before putting the product through practical testing, we take a close look at its build quality. How high-quality are the materials used? Are the feel and appearance satisfactory?
show moreCriterion
Comment
Score achieved*
Visual appearance
Attractive design
Points
Workmanship
Very good build quality
Points
Stability
Very stable
Points
Product sustainability
No information
Points
OVERALL
98
Points
Weighting: 20%
*The maximum score is 100 points

The GJEMAX 18V cordless impact wrench impresses right from the first touch with its robust and solid build quality, which is well-suited for use in DIY projects. The visual appearance is modern and functional, with the housing feeling sturdy and fitting comfortably in the hand. A particularly positive feature is that the rubber grips on the handle ensure a secure hold and make working more comfortable. The sturdiness of the tool and the included carrying case give the impression that the set is well-protected even with frequent use. Another plus is the well-designed accessory set, which is neatly finished and gives the impression of a complete package. Overall, the GJEMAX 18V Cordless Impact Wrench presents itself as a solid and functional tool that makes a good impression both visually and in terms of quality and appears well-suited for typical DIY projects.
Here are the results of our hands-on test
Does the manufacturer live up to its advertising claims?
Our practical test carries the highest weighting. Here, the product must undergo a wide variety of criteria and tests. We evaluate the functions and product claims of the test item.
Our practical test carries the highest weighting. Here, the product must undergo a wide variety of criteria and tests. We verify the functions and product claims of the test item.
show moreCriterion
Comment
Score achieved*
Safety during use
Secure grip and controlled operation
Points
Vibrations during use
Low vibration during operation
Points
Effectiveness with different screw sizes
High efficiency with small and large screws
Points
Temperature development
Moderate heat generation during prolonged use
Points
Handling and ergonomics
Ergonomic design for comfortable work
Points
OVERALL
92
Points
Weighting: 45%
*The maximum score is 100 points
In practical use, the GJEMAX 18V Cordless Impact Wrench largely meets the expectations one has for a tool in this class. With its high torque of up to 520 Nm, wheel nuts and screws can be reliably loosened and tightened in many cases, making it particularly suitable for tire changes and typical assembly work. The multi-stage power control allows the force to be adjusted to different materials, enabling more controlled work. The rubberized grip surface ensures a secure hold during use and reduces the risk of slipping, even during prolonged use. Additionally, the powerful battery offers solid runtime, allowing multiple tasks to be performed in succession without the need for constant recharging. Its ease of use is particularly practical, as tool attachments can be changed quickly and the device is ready for use with minimal effort. Thanks to the extensive accessory set, the impact wrench is equipped for many applications without the need for additional tools. The compact and functional design facilitates use in tight spaces and makes working more comfortable overall. Overall, the GJEMAX 18V cordless impact wrench impresses with a good combination of power, functionality, and ease of use, making it a particularly useful tool for DIYers and occasional use.

Test Plan
You can find a detailed overview of the evaluation criteria for the practical part of the test as well as the point distribution here. If you are also interested in the evaluation of our other test criteria, please read our document on the evaluation process.
Value for money
Finally, we examine how the product compares to the competition. Can it compete with the competition in terms of price and quality? Would we generally recommend purchasing it?
Finally, we examine how the product stacks up against the competition. Can it compete with the competition in terms of price and quality? Would we generally recommend purchasing it?
show moreCriterion
Comment
Score achieved*
Value for money
Very good performance in the lower price segment
Points
TOTAL
90
Points
Weighting: 15%
*The maximum score is 100 points
Prices of up to€269.99are listed online for comparable products. Very affordable products areavailablestarting at€79.99. TheGJEMAX cordless impact wrenchis currently inthe lower price segment with a price of€119.99. The value for money is rated as very good. This rating takes into account both the high quality and performance as well as the price in the lower segment, resulting in a very good overall value.
Overall result
Weighting
Score achieved*
1. Packaging & Contents
20%
Points
2. Product Workmanship & Appearance
20%
Points
3. In practical testing
45%
Points
4. Value for money
15%
Points
TOTAL
Points
*The maximum score is 100 points





























