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Amazon.com > Cell Phones & Accessories > Accessories > Chargers & Power Adapters > Portable Power Banks
[9999 DAYS WARRANTY]3100mAh External Battery Charger by 5 Star America **THINNEST + FASTEST...
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From 5 Star America
This report was last updated 5/18/2017.
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Report Info:
Last Updated: May 18, 2017
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Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Fail Overall Grade
FAIL Deleted Reviews
FAIL Suspicious Reviewers
WARN Rating Trend
WARN Unverified Purchases
WARN Incentivized Reviews
WARN Reviewer Ease
WARN Phrase Repetition
WARN Overlapping Review History
PASS Word Count Comparison
PASS Reviewer Participation
PASS Brand Repeats
Most Trusted Reviews
Awesome [Go to full review]
Sep 23, 2014
100%
TRUST
TRUST
- Verified Purchaser
- Take-Back Reviewer (4 deleted Reviews; avg. rating: 4.0)
- Easy Grader (avg. rating: 4.3)
Least Trusted Reviews
I received this product for free, in exchange for reviewing ... [Go to full review]
Dec 16, 2013
0%
TRUST
TRUST
- Unverified Purchaser
- Created on a high volume day
- Admitted to receiving an incentive
- Contains repetitive phrases (show)
- Take-Back Reviewer (3 deleted Reviews; avg. rating: 3.3)
- Critical Reviewer (avg. rating: 4.2)
Analysis Details
Fail Deleted Reviews
We discovered a total of 20 deleted Reviews for this product, with an average rating of 4.2. Even though deleted reviews don't affect the average rating, the fact that action was taken to delete reviews raises some red flags about the integrity of the reviews for the product as whole.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
- 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.
- We have no information on reviews that were never published in the first place.
- 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.
Fail Suspicious Reviewers
Take-Back Reviewers
74 of the 112 reviewers have had at least one of their past reviews for another product deleted. This is an excessively large percentage of Take-Back Reviewers which may indicate unnatural reviews.
Warn Rating Trend
-
- 34%
- Created over 10 days
We counted 112 reviews for this product over the span of 1,091 days, an average of 0.1 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 10 days exceeding this threshold:In total, we found that 38 reviews were created on just 10 days. This is an excessively high number of reviews submitted on these high volume days.
Warn Unverified Purchases
91 of the 112 total reviews for this product are unverified purchases. This is an excessively large percentage of unverified purchases and it may indicate unnatural reviews.
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.
Warn Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
24 of the 112 total reviews for this product admitted to receiving a free or discounted product in exchange for a review. This is more than we would expect see; the presences of at least one incentivized review indicates that there may be more, since not all reviewers will disclose that they had received an incentive to post a review.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Warn 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 4.4, while the average ease score for reviewers in this category is 4.3. While this discrepancy is rather large, it is not quite large enough to rule out the possibility of it being due random chance.
4.4 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease 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:
Show MoreShow Less
12 reviews
12 reviews
3 reviews
8 reviews
5 reviews
4 reviews
77 of the 112 total reviews for this product use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.
Warn Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
33% also reviewed:
Coffee Maker French Press:by SterlingPro [Double... by SterlingPro
29% also reviewed:
G7 Power G7BR20727D BR20 Dimmable LED Light Bulb by
23% also reviewed:
OXA Juice Box S2 10000mAh External Battery 5V... by OXA
21% also reviewed:
OXA 2600mAh Portable Mini Stylish External... by OXA
21% also reviewed:
Palette Painting Tray by Chameleon Art Supplies
20% also reviewed:
Pocket Chainsaw Survival Gear - Cutting Teeth... by Stunning Gadgets
63 of the 112 reviewers have substantial overlapping product review history. While this is more than we'd expect to see, it does not appear to have a significant impact on the overall rating.
Pass Word Count Comparison
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- 22%
- Have an overrepresented word count
In the graph above, we can see the distribution of review word counts for this product and the expected distribution for this category. We see the following 1 group with a statistically significant greater concentration than what we'd expect to see:In total, we found that 25 reviews (or 22%) are within an overrepresented word count group. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Reviewer Participation
-
- 0%
- From reviewers with an overrepresented participation
We didn't find any participation groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Reviewer Participation test.
Read more about our Reviewer Participation test.
Pass Brand Repeats
Brand Repeaters
We didn't detect a substantial amount of Brand Repeaters.