About Us

Prüfengel offers authentic consumer tests in which real users share their experiences with products. Our tests are based on practical applications in everyday life and reflect the opinions of consumers. As we focus on consumer tests, we do not carry out any material, long-term or laboratory tests. The tests are carried out by 1-2 independent consumers over a period of 7-14 days. The exact test conditions can be viewed in the test plan of the respective test report – click here to go directly to the test plan.

Manufacturers provide the tested products free of charge. We charge a one-off test fee for carrying out the tests. In addition, manufacturers pay an annual licence fee for the use of the Prüfengel seal. We also receive a commission for linking to manufacturers’ websites. These remunerations have no influence on our test results or ratings.

We guarantee transparency and a fair evaluation. For a detailed insight into our comprehensive evaluation process, please click here.

Luckfire
Luckfire M7

Manufacturer’s product description

The first TÜV Rheinland-certified Booster car jump-start power bank sets new standards in performance, safety, and versatility. With performance three times higher than standard requirements, it is suitable for gasoline engines up to 8.5 liters and diesel engines up to 6.5 liters of displacement. Compatible with nearly all 12-volt vehicles—from cars and SUVs to RVs and vans, as well as motorcycles and ATVs—it reliably delivers power even at temperatures as low as -20 °C. The technology enables safe, one-step jump-starting for dead or damaged batteries in seconds. Intelligent algorithms reduce sources of error and ensure a smooth start. Also integrated is a powerful 150-PSI air pump with smart presets for various applications, as well as an auto-stop function for precise inflation. Weighing just around 0.9 kilograms, the compact device offers impressive performance on the go. As an all-in-one solution , it combines a jump starter, portable tire pump, power bank, and flashlight with three modes, including strobe and SOS. The 60-Wh capacity allows for up to 20 jump starts for a 2.0-liter engine, inflating up to 32 tires (27 inches), or charging up to five smartphones—all on a single charge. Even if connected incorrectly, there are no sparks and no danger. The package is rounded out by 24/7 global customer service with one year of support.

  • TÜV Rheinland certified
  • One-step jump start in seconds
  • Portable tire pump, power bank, and flashlight
  • Priced in the upper segment

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?

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Product protection

Box is sturdy, product is adequately protected

100

Points

Sustainability of packaging

Unnecessary packaging waste has been eliminated; the plastic film protects the product components

90

Points

Package contents & scope

Complete

100

Points

Instructions

Detailed and available in multiple languages

100

Points

TOTAL

98

Points

Weighting: 20%
*The maximum score is 100 points

This product was delivered in a cardboard box that was well-suited to the size of the power bank.
Foradded protection, the product box is wrapped in plastic . It would be desirable for the manufacturer to consider a more environmentally friendly alternative here .
The individual product components are packed in a practical fabric pouch with a zipper.
A positive feature worth noting is that the package includes a handy user manual written in multiple languages.

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 it to the 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?

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Visual appearance

Attractive design

100

Points

Workmanship

Very good build quality

100

Points

Stability

Very stable

100

Points

Product sustainability

No information

80

Points

OVERALL

95

Points

Weighting: 20%
*The maximum score is 100 points

When you pick up the product for the first time , you immediately notice its convenient size.
The fabric pouch is compact and well-made.
The power bank and the jump-start cable are separated by a fabric divider.
At first glance, the cables make a solid and high-quality impression.
The power bank’s outer casing appears sturdy.
The well-designed package is rounded out by a loop on the fabric pouch, which makes carrying the product even more convenient.

Here are the results of our hands-on test

Does the manufacturer deliver on its advertising promises?

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.

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Power bank functionality

Works perfectly

100

Points

Check of LED indicators and status displays

Clearly visible

100

Points

Car start function

Works very well

100

Points

Flexibility and durability of the cables

Sturdy and flexible

100

Points

Power bank charging time

Reasonable

100

Points

OVERALL

100

Points

Weighting: 45%
*The maximum score is 100 points

The jump-start power bank underwent a thorough practical test .
Regarding the LED indicators and status displays, it was determined during the test that they are very well-designed and have good brightness. The symbols are clearly recognizable and very informative; the colors also stand out well from one another, making the display easy on the eyes.
The power bank worked flawlessly and served as a quick jump starter for the car. It can also be used a second time to start the car without needing to be recharged.
In the test, the power bank took approximately 90 minutes to fully charge.
Another positive feature is the durability of the cables: they could be bent in all directions and proved to be very robust and stable even under stress and when pulled hard .
In practical testing , this product impressed not only with its quick jump-start capability but also with additional integrated features such as the flashlight and the tire inflation function .


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?

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Value for money

Very good performance in the upper price segment

50

Points

TOTAL

50

Points

Weighting: 15%
*The maximum score is 100 points

Prices of up to€120.00are charged online for comparable products. Very affordable products areavailablestarting at€80.00. TheLuckfire M7 fromLuckfireis therefore currently inthe upper price segment with a price of€123.15.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 upper segment, resulting in a very good overall value .

Overall result

1. Packaging & Contents

20%

98

Points

2. Product Workmanship & Appearance

20%

95

Points

3. In practical testing

45%

100

Points

4. Value for money

15%

50

Points

TOTAL

91

Points

*The maximum score is 100 points

Luckfire M7
 of the brand 
Luckfire
achieved
91
Points in our test and therefore passed. The test was carried out in the test period
02/26
and is stored in our database under the licence number
260203001
. Further information on our test procedure can be found at www.pruefengel.de/testverfahren.

The practical tests are based on careful observations and do not include long-term or laboratory tests. The test judgements reflect the personal impressions and opinions of the testers who try out the products in everyday use. We would like to emphasise that these evaluations do not claim to be exhaustive and may reflect both subjective and objective impressions. The evaluations are made to the best of our knowledge and belief, without any liability being assumed for the accuracy or completeness of the test results. It is important to note that our tests are not based on legal requirements, medical effects or specific ingredients of the products. We rely on the advertising claims and information provided by the manufacturers, but use of the information is always at your own risk. Our efforts are aimed at ensuring a serious and thorough testing procedure, which has been developed in a long and professional process in close co-operation with our testers.

The practical tests are based on careful observations and do not include long-term or laboratory tests. The test judgements reflect the personal impressions and opinions of the testers who try out the products in everyday use. We would like to emphasise that these evaluations do not claim to be exhaustive and may reflect both subjective and objective impressions. The evaluations are made to the best of our knowledge and belief, without any liability being assumed for the accuracy or completeness of the test results. It is important to note that our tests are not based on legal requirements, medical effects or specific ingredients of the products. We rely on the advertising claims and information provided by the manufacturers, but use of the information is always at your own risk. Our efforts are aimed at ensuring a serious and thorough testing procedure, which has been developed in a long and professional process in close co-operation with our testers.

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Evaluation process

You can find a detailed insight into our evaluation process, which forms the basis for our product ratings, here:

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Our product evaluations are carried out exclusively through direct, on-site tests. This ensures a detailed and specific examination of the product properties. You can find more information about the test procedure here.

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