energup 40Volt Max 3A Replacement for Black and Decker 40V Battery, LBX2040 LST136 LBXR2036 LBXR36 LHT2436 LCS1240 LBX1540 LBX36 LSWV36 LST540 LST136W for Black+Decker 40V Lithium Battery
As an Amazon Associate I earn from qualifying purchases.
Review Analysis Results
Analysis Summary
Based on a thorough analysis of these 15 reviews, the overwhelming majority (approximately 88%) appear to be genuine customer experiences. All reviews are marked as verified purchases, which significantly increases their authenticity likelihood. The reviews display a natural distribution of ratings (5 five-star, 4 four-to-three-star, and 6 one-to-two-star reviews) that reflects real user experiences with a replacement battery product, where performance can vary based on individual usage patterns and product batches.
Strong evidence of authenticity includes numerous reviews with specific personal context and detailed usage scenarios. Review #3 provides a multi-year history with Craftsman tools and mentions the 'dreaded red light' specific to battery failures. Review #1 explains the need for a backup battery during 'heavy leaf fall' with a Black and Decker mulcher. Review #4 offers a detailed failure account with charging attempts and includes an update about seller interaction. Review #10 describes compatibility issues with a specific trimmer model (LSt136) and mechanical release problems. These detailed, situation-specific accounts are hallmarks of genuine reviews.
A few reviews raise minor concerns due to their brevity and generic phrasing. Review #2 ('Good as OEM. Great price. Work great.') and Review #5 ('Seems to be functioning well. Charges well and is durable.') are extremely brief and lack personal context, though their verified status and non-excessive positivity keep them in the 'likely genuine' category. There are no clear patterns of coordinated manipulation, repetitive marketing language, or suspicious timing across the reviews.
In summary, this review set strongly reflects authentic customer feedback for a replacement battery product. The detailed negative reviews with specific failure modes and the detailed positive reviews with personal tool histories provide excellent balance. While two reviews are somewhat generic, they don't demonstrate clear manipulation patterns. The overall impression is of legitimate customers sharing varied experiences with a product that has some quality consistency issues, as evidenced by both satisfied and dissatisfied verified purchasers.
Key patterns identified in the review analysis include: Verified purchase status for all reviews, Natural rating distribution (5/5/6 across high/medium/low), Specific tool model and usage scenario details in genuine reviews.
Review Statistics
Price Analysis
This is a budget-priced third-party replacement battery for Black+Decker 40V tools. The 3.21/5 rating (2629 reviews) is concerning and suggests inconsistent quality—many users report premature failure. Only consider if the price is significantly lower than genuine alternatives, and prioritize sellers with good return policies.
MSRP Assessment
Market Position
Buying Tips
Understanding This Analysis
What does Grade B mean?
This product has good review authenticity with minor concerns. While most reviews appear genuine, we detected some patterns that warrant mild caution.
Adjusted Rating Explained
The adjusted rating (3.00 stars) represents what we estimate this product's rating would be if fake reviews were removed. This product's adjusted rating is lower than Amazon's displayed rating (3.21 stars), suggesting positive fake reviews may be inflating the score.
How We Detect Fake Reviews
Our AI analyzes multiple factors: language patterns (generic vs. specific), reviewer behavior (history, timing), temporal anomalies (review clusters), verification status, sentiment authenticity, and statistical outliers. No single factor determines a review is fake - we look at the combination of signals.
Important Limitations
No automated system is perfect. Sophisticated fake reviews can evade detection, and some genuine reviews may be incorrectly flagged. Use this analysis as one data point in your purchasing decision, not the only factor. Reading actual review content yourself is always valuable.
Share This Analysis
Related Battery Packs Products
Quick Links
Learn More About Fake Reviews
Safe Amazon Shopping Guide: 7 Steps to Avoid Fake Products
Complete guide to safe Amazon shopping including review analysis, seller verification, price checking, product research strategies, and scam avoidance techniques.
How to Spot Fake Amazon Reviews: 10 Warning Signs in 2025
Learn the telltale signs of fake Amazon reviews including AI-generated text, suspicious timing patterns, generic language, and reviewer behavior red flags. Based on analysis of 40,000+ products.
Amazon's Choice Badge: What It Really Means and Why It Can Mislead
The Amazon's Choice badge appears trustworthy but is algorithmically assigned without quality verification. Learn what triggers the badge, its limitations, and why you shouldn't rely on it alone.