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Energup 21.6V 3000mAh Li-ion Replacement Battery for Dyson V8 Absolute Cord-Free Vacuum Handheld...
More product info From Energup

Review Hijacking Alert!
13 reviews are coming from a seemingly different product variation:

Energup 7 2V 3000mAh Flat NiMH High Power Battery Packs with Tamiya Connectors for KET Connectors... (Example Review )



Learn more about Review Hijacking.
Amazon Reviews for  Energup 21.6V 3000mAh Li-ion Replacement Battery for Dyson V8 Absolute Cord-Free Vacuum Handheld Vacuum Cleaner
Rating:
48 Ratings
41 Reviews
("Ratings" vs. "Reviews")
7% of potentially unnatural reviews removed (why?)
Adjusted:
View/Edit Adjustment
Jump to Report Card
Report Info:
Last Updated: Dec 21, 2021
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Show Report History
Note: While Amazon.com claims 48 Ratings, we counted 41 Reviews available on their site.
Note: We only analyze "reviews" and ignore one-tap "ratings".

Report Card

Warn Overall Grade
WARN Suspicious Reviewers
WARN Phrase Repetition
WARN Reviewer Participation
PASS Rating Trend
PASS Unverified Purchases
PASS Word Count Comparison
PASS Overlapping Review History
PASS Reviewer Ease
PASS Brand Repeats
PASS Incentivized Reviews
PASS Deleted Reviews

Most Trusted Reviews

I was looking for a replacement for our V8 battery ... [Go to full review]
Dec 29, 2018      
100% TRUST
  • Verified Purchaser
  • Take-Back Reviewer (2 deleted Reviews; avg. rating: 5.0)
  • Overlapping Review History: reviewed 1 of 9 top products
  • Critical Reviewer (avg. rating: 4.2)


Least Trusted Reviews

Good price, works well and holds a charge long enough ... [Go to full review]
Aug 15, 2017      
0% TRUST
  • Verified Purchaser
  • Overrepresented word count (15 words)
  • Contains repetitive phrases (show)
  • Overrepresented Participation (posted 2 Reviews)
  • Easy Grader (avg. rating: 5.0)


Analysis Details

Warn Suspicious Reviewers

One-Hit Wonders


7 of the 41 reviewers have only reviewed this product. While this is more One-Hit Wonders than we'd expect to see, it does not appear to have a significant impact on the overall rating.

from one-hit wonders

from reviewers with more than one review


1.6
2.7


Read more about our Suspicious Reviewers test.

Warn Phrase Repetition
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.

Common Phrases in Reviews:
2 reviews
(1.5/5)
2 reviews
(2.0/5)
2 reviews
(1.5/5)
2 reviews
(1.0/5)
2 reviews
(1.5/5)
2 reviews
(3.0/5)
2 reviews
(1.0/5)
2 reviews
(1.0/5)
2 reviews
(1.0/5)
2 reviews
(3.0/5)
Show MoreShow Less
Common Phrases in Titles:
2 reviews
(1.0/5)


11 of the 41 total reviews for this product use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.

from reviews with substantial repetitive phrases

from reviews without substantial repetitive phrases


1.9
2.7


Read more about our Phrase Repetition test.

Warn Reviewer Participation

  • 66%
  • From reviewers with an overrepresented participation

We see the following 2 participation groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 27 reviewers (or 66%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.

From reviewers with an overrepresented participation

From reviewers with a properly represented participation


2.2
3.1


Read more about our Reviewer Participation test.

Pass Rating Trend

  • 0%
  • Created over 1 day
We counted 41 reviews for this product over the span of 1,021 days, an average of 0.0 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 2 or fewer reviews on any given day.

However, we see the following 1 day exceeding this threshold:In total, we found that 0 reviews were created on just 1 day. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Read more about our Rating Trend test.

Pass Unverified Purchases
  • 0%
  • Unverified Purchases
0 of the 41 total reviews for this product are unverified purchases. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Unverified purchases may be the result of Kindle Unlimited readers, buyers who didn't pay full price, or reviewers who did not purchase the product at Amazon. Read more about our Unverified Purchases test.

Pass Word Count Comparison

  • 0%
  • Have an overrepresented word count
We didn't find any review word count groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Word Count Comparison test.

Pass Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:

Does not include products
from the same brand


8 of the 41 reviewers have substantial overlapping product review history. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from reviewers with substantial overlapping history

from reviewers without a substantial overlapping history


2.6
2.5


Read more about our Overlapping Review History test.

Pass Reviewer Ease
The ease score is the average rating for all reviews that a given reviewer submits. The average ease score for reviewers of this product is 3.5, while the average ease score for reviewers in this category is 4.3.

3.5 Product's Average Ease Score

4.3 Category's Average Ease Score


3.5
4.3


Read more about our Reviewer Ease test.


Pass Brand Repeats

Brand Repeaters

We didn't detect a substantial amount of Brand Repeaters.

Pass Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.

  • 0%
  • Admitted to receiving an incentive
We didn't detect any reviews that used language indicating they were incentivized.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.

Pass Deleted Reviews
  • 0
  • Reviews have been deleted
We have not discovered any deleted reviews for this product.

There are a few limitations to keep in mind regarding the Deleted Reviews test:
  1. We don't have a magic ability to collect every single deleted review; we can only identify reviews as deleted if we collect them on one date and then notice they are no longer visible on a subsequent date.
  2. We have no information on reviews that were never published in the first place.
  3. We also don't know why these reviews were removed. It could be action from the platform, personal decision by the review author, part of an entire account closure, even some data error on our part, etc.
Read more about our Deleted Reviews test.