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 material, long-term or laboratory tests. Our aim is to provide honest feedback to help you make a purchasing decision. For a detailed insight into our comprehensive evaluation process, which forms the basis of all our product reviews, please click here.

AHJ
Spare battery

The AHJ brand replacement battery impresses in our practical test in almost all categories with very good performance. It is fully compatible with Eufy RoboVac G10 Hybrid, G20/G20 hybrid, G15, G30/G30 Edge/G30 Hybrid/G30 Verge, G40/G40 hybrid; RoboVac 11/11S/11S MAX, 12, 15C/15C MAX/15T, 25C/25C Max, 30/30C/30 Max, 35C; Ecovacs Deebot N79/N79S/DN622, Tesvor X500. The AHJ replacement battery can perform up to 300-500 usage cycles. The battery leaves nothing to be desired and therefore qualifies for an absolute recommendation of the product with a very good overall rating. With a quick installation time of around 2 minutes.

Advantages

✅ High level of safety
✅ High reliability
✅ 12 months warranty
✅ Lithium-ion battery with high capacity

Disadvantages

❌ None

The test

General information

We took a close look at and tested the product in a practical test. In the following, we take a closer look at the features and impressions. From the packaging, materials and quality to the range of functions and handling, the product is subjected to our test procedure.
To give you a quick overview, we work with a points system. The maximum achievable score per area is 100 points. The final overall score is calculated from the average of all tested features, taking into account the respective weighting. For a detailed insight into our comprehensive evaluation process, which forms the basis of all our product ratings, please click here.

The first impression

Packaging and contents

ℹ️ Here we take a closer look at packaging. Sustainability is becoming an increasingly important factor. In addition, adequate protection of the product must of course also be guaranteed. Are the contents of the packaging complete and does the manufacturer make it as easy as possible for me to use the product straight away?

CriterionRemarkScore achieved*
Product protectionCarton is sturdy, product sufficiently protected100 points
Sustainability PackagingNo unnecessary packaging waste, no use of plastic100 points
Package contents & scopeComplete100 points
Instructions for useInstructions for use available in more than 3 languages, well written – more informative pictures would be desirable100 points
Total100 points
Weighting: 20%
*The maximum score is 100 points

The AHJ brand replacement battery is supplied in compact cardboard packaging on which the most important data and functions of the device are printed. The cardboard box is sturdy and provides adequate protection for the product. In addition, product protection is ensured by a separate film covering the battery and polystyrene spacers, which prevent the product from slipping and protect it from mechanical pressure from the outside . The scope of delivery is complete, so that nothing stands in the way of immediate use. The enclosed instructions for use are written in four different languages and are very easy to understand. The manufacturer also provides information on customer service in the appendix. Overall, the product makes a very good first impression.

The first time in your hand

Product processing and appearance

ℹ️ Before we start the practical test, we take a close look at the workmanship of the products. How high quality are the materials used? Are the look and feel satisfactory?

CriterionRemarkScore achieved*
Visual appearanceTimeless design100 points
ProcessingVery good workmanship, no unclean transitions100 points
StabilityVery robust material, stable100 points
Sustainability of the productNo information on sustainability – however, we assume a long service life due to the materials used80 points
Total95 points
Weighting: 20%
*The maximum score is 100 points
The replacement battery is ready for the practical test.

The replacement battery from AHJ presents itself at first glance with an aesthetic and functional design. The clear lines and simple appearance convey elegance and seriousness. The workmanship of the replacement battery is of high quality, which is reflected in the robust construction and careful choice of materials. Both the housing and the components are solid and resistant, which guarantees a long battery life. The stability of the replacement battery is impressive and enables safe and reliable vacuuming.
One aspect that is not explained in detail, however, is the sustainability of the product. More detailed information about the materials used, possible recycling options or environmental standards would be desirable here. A transparent presentation of the environmental impact and possible improvements in this area could make the product even more attractive to environmentally conscious consumers.

This is what our practical test showed

Does the manufacturer keep its advertising promises?

ℹ️ Our practical test has the highest relevance and therefore weighting. Here, the product has to undergo a wide range of criteria and tests. We check the functions and product promises of the test article.

CriterionRemarkScore achieved*
AssemblyReady for use in just a few minutes100 points
QualityGood construction100 points
CompatibilityCompatible with many Eufy RoboVacs100 points
PerformanceConsistent performance100 points
Service lifeLong service life100 points
Total100 points
Weighting: 45%
*The maximum score is 100 points

Our extensive practical test of the AHJ replacement battery has shown that the manufacturer keeps its advertising promises. Installing the battery is extremely easy and can be done independently in around two minutes. During the test with the Eufy cleaning robot, there were no battery faults, which indicates the reliability of the replacement battery.
The replacement battery proved to be extremely powerful and lasted an impressive one hour of continuous use. The high capacity 2600mAh lithium-ion battery proved to be durable and reliable. Before first use, it is recommended to fully charge the battery to ensure optimum performance.
The AHJ replacement battery comes with a 14.4 V battery and a detailed instruction manual to make it easier to install and use the battery. Although we are not yet able to provide long-term durability data due to the short test period, the durability during our use was optimal and indicates reliable performance of the replacement battery.

Price/performance ratio

and ratings from consumers

ℹ️ Finally, we examine how the product compares to the competition. Can it keep up with the competition in terms of price and quality? Would we generally recommend buying it? We also look at the consumer reviews and check whether the critical and positive reviews are actually justified.

CriterionRemarkScore achieved*
Price / performance ratioVery good performance in the mid-price segment80 points
Rating cut4.4 out of 5.0 on Amazon70 points
Total75 points
Weighting: 15%
*The maximum score is 100 points

On the Amazon platform, consumers rate the product with an average of 4.4 stars. One common complaint is that the battery is defective after 6 months, but a replacement is sent immediately. Many customers like the compatibility and function. In our practical test, we were able to confirm that no battery faults occurred at any time.

Prices of up to €52 are charged on the Internet for equivalent products. Very inexpensive products are available from as little as €13. The replacement battery from AHJ is therefore currently in the middle price segment with a price of €26.99. For the quality and performance received, theprice-performance ratio is very good.

Overall result

WeightingScore achieved*
1. packaging & contents20%100 points
2. product processing & appearance20%95 points
3. in the practical test45%100 points
4. price/performance & consumer ratings15%75 points
Total95 points
*The maximum score is 100 points

The replacement battery for Eufy RoboVac of the brand AHJ was rated with an overall score of 1.3 and thus successfully qualified for our test seal. The test was carried out in the test period 03/24 and is stored in our database under the license number 240301007. Further information on our test procedure can be found at www.pruefengel.de/testverfahren.

Test result:

1,3

Spare battery
of the brand
AHJ
achieved
95
Points in our test and therefore passed. The test was carried out in the test period
03/24
and is stored in our database under the licence number
240301007
. 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 observation and do not include long-term or laboratory tests. The test ratings reflect the opinion of our experts and are based on careful analysis. We would like to emphasize that these evaluations do not claim to be exhaustive and reflect both subjective and objective impressions. The assessments 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 reputable and thorough testing process, which has been developed in a long and professional process in close cooperation with our experts.

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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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