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WindyNation P30L LCD 30A PWM Solar Panel Regulator Charge Controller with Digital Display and User...
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From WindyNation
This report was last updated 3/28/2024.
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Refresh the report to view the most up-to-date data available:
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Note: We only analyze "reviews" and ignore one-tap "ratings".
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FAIL 
Deleted Reviews
Deleted ReviewsFAIL Unverified Purchases
Unverified PurchasesFAIL Suspicious Reviewers
Suspicious ReviewersFAIL Phrase Repetition
Phrase RepetitionPASS Rating Trend
Rating TrendPASS Word Count Comparison
Word Count ComparisonPASS Overlapping Review History
Overlapping Review HistoryPASS Reviewer Ease
Reviewer EasePASS Brand Repeats
Brand RepeatsPASS Incentivized Reviews
Incentivized ReviewsN/A Reviewer Participation
Reviewer Participation
Most Trusted Reviews
There is nothing to dislike about this little controller. Simple ... [Go to full review]
Feb 10, 2023
100%
TRUST
TRUST
-
Verified Purchaser
-
Easy Grader (avg. rating: 4.4)
Take-Back Reviewer (2 deleted Reviews; avg. rating: 5.0)
Overlapping Review History: reviewed 1 of 9 top products
Least Trusted Reviews
This controllerWorks on and off and can't be trusted. We ... [Go to full review]
Aug 10, 2022
0%
TRUST
TRUST
-
Unverified Purchaser -
Contains repetitive phrases (show)
-
One-Hit Wonder -
Never-Verified Reviewer -
Critical Reviewer (avg. rating: 2.0)
Analysis Details
Fail Deleted Reviews
Deleted Reviews
We discovered a total of 4 deleted Reviews for this product, with an average rating of 4. 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.
4.0 average rating of deleted reviews
Fail Unverified Purchases
Unverified Purchases
12 of the 302 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 2.4 while the verified purchasers have rated this product an average of 4.4. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are 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.
Fail Suspicious Reviewers
Suspicious Reviewers
One-Hit Wonders
Approximately 15% of reviewers have only reviewed this product. The One-Hit Wonders have rated this product an average of 2.8 while the reviewers who have posted more than one review have rated this product an average of 4.2. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
Take-Back Reviewers
Approximately 70% of 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.
Fail Phrase Repetition
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:
~5% of reviews
(4.5/5)
(4.5/5)
~8% of reviews
(4.7/5)
(4.7/5)
Approximately 60% of reviews use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.4 while reviews without substantial repetitive phrases rated this product an average of 3.5. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
Pass Rating Trend
Rating Trend
-
- <10%
- Created on high-volume days
We didn't notice any signals that would indicate reviews were created unevenly over time.
Read more about our Rating Trend test.
Read more about our Rating Trend test.
Pass Word Count Comparison
Word Count Comparison
-
- <10%
- 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.
Read more about our Word Count Comparison test.
Pass Overlapping Review History
Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
<10% also reviewed:
bayite DC 6.5-100V 0-100A LCD Display Digital... by bayite
<10% also reviewed:
BESTEK 300W Power Inverter DC 12V to 110V AC Car... by BESTEK
<10% also reviewed:
Sun YOBA 5 Pairs of Male/ Female Solar Panel... by Sun YOBA
<10% also reviewed:
DROK® 0.56'' DC 3-30V Digital Voltmeter Voltage... by DROK
<10% also reviewed:
Signstek Y Branch MC4 Parallel Connector Adapter... by Signstek
<10% also reviewed:
NKTECH NK-HS2 Inductive Hour Meter for Gas Engine... by NKTECH
<10% also reviewed:
Schumacher SC1280 Fully Automatic Battery Charger... by Schumacher
<10% also reviewed:
Cooler Master MM720 White Glossy Lightweight... by Cooler Master
Does not include products
from the same brand
from the same brand
Approximately 30% of 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.
Pass Reviewer Ease
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 3.9, while the average ease score for reviewers in this category is 4.3.
3.9 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Brand Repeats
Brand Repeats
Brand Repeaters
Less than approximately 10% of reviewers have reviewed other products for this brand. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Incentivized Reviews
Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
-
- <10%
- 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.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.