Dong Chen 40V 1600W 21-Inch 3-in-1 Self-Propelled Mower (Four 4.0Ah Batteries, 2600RPM)
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GHOST
45
Winnowl Index
Winnowl Verdict
We’ve flagged the Dong Chen 40V 1600W 21-Inch 3-in-1 Self-Propelled Mower with a DEFICIENT (38) Winnowl Index, identifying what we call a Ghost Warning. The score is based on Zero Brand Strength, Mediocre Performance and Mediocre Value. The audit of the Dong Chen 40V 1600W 21-Inch 3-in-1 Self-Propelled Mower (Four 4.0Ah Batteries, 2600RPM) confirms a Total Run Time of 30 minutes, which may mean you may find yourself rushing to finish a small yard or needing a second battery to complete a standard session and reflects the Zero Brand Trust found in the data. We recommend you look for another brand in Battery Powered Self-Propelled Lawn Mowers that values reliability (a return policy) and trust (an actual website).
Market Value Index
Strong
$449.99
Overpriced
Fair
High Value
Audit confirms Mediocre Value because the $449.99 price is 32% above the average despite the Performance being 19% less capable.
Performance Rating
Average
You can see the Mediocre Performance rating in specs like the Total Run Time at 30 minutes which may mean you may find yourself rushing to finish a small yard or needing a second battery to complete a standard session.
Brand Strength
Zero
WARNING: Because we can't find a website, return policy or customer service number, we gave Dong Chen a Zero Brand Strength score.
Available At
$449.99
View Deal
The Winnowl Lab Report
| Specification | Value | Rating | Vs. Average | Winnowl Insight |
|---|---|---|---|---|
| Number of Batteries | 4 count | Exceptional | 137% better | High-capacity battery bundle. Engineered to eliminate downtime through a constant rotation of fresh cells. |
| Total Run Time | 60 minutes | Weak | 4% better | High-endurance rating. Provides a safety buffer for thick grass or larger properties. |
| Warranty | 2 Years | Weak | 48% worse | Standard residential protection. Covers the machine through the initial years of typical seasonal use. |
| Total Capacity | 16 Ah | Strong | 68% better | Professional-grade power capacity. Designed for maximum torque and massive acreage. |
| Battery Voltage | 40 V | Mediocre | 29% worse | Standard residential power. Balanced for consistent performance on well-maintained suburban lawns. |
| Usable Energy Capacity | 512 Wh | Average | 28% better | |
| Charging Time | 115 mins | Average | 17% worse | Standard residential charge rate. Balanced for typical weekly maintenance schedules. |
| Cutting Width | 21 inches | Average | Average | Standard residential deck width. Balanced for efficiency and maneuverability through most garden gates. |
| Single Battery Capacity | 4 Ah | Mediocre | 32% worse | |
| Cutting Height Adjustment | 7 settings | Average | Average | High-precision adjustment rack. Allows for fine-tuning based on grass species and regional moisture levels. |
Ranking Factors
Insights
- Value Rank: #45 out of 75.
- Performance Rank: #41 out of 75.
- Winnowl Quadrant: Budget
Strengths
- At Ah, the Total Capacity is higher than the class average (9.55 Ah) but does not reach the class maximum (24 Ah).
- This model offers the most Number of Batteries in its class at 4 batteries, significantly above the class average of 1.69.
Neutral
- A Cutting Width of inches is about average (21.21 inches) but narrower than the widest in class at 26 inches.
- A Cutting Height Adjustment of settings is about average (7.01 settings) but not as many as the class max of 10 settings.
- A Charging Time of mins is about average 98.21 mins but below the fastest at 30mins.
Weaknesses
- Shortest Warranty in its class at 2 Years, well below longest in class at 5 Years.
- Shortest Total Run Time in its class at 30 minutes, well below the class high at 150 minutes.
- At V, the voltage is in the bottom 10%, indicating lower power potential than most peers.
Comparison
| Name | Winnowl Index | Value | Performance | Brand | Price | Usable Energy Capacity | Total Run Time | Battery Voltage | Total Capacity | Cutting Width | Warranty | Charging Time | Number of Batteries | Cutting Height Adjustment | Single Battery Capacity |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dong Chen 40V 1600W 21-Inch 3-in-1 Self-Propelled Mower |
GHOST
45
|
Strong | Average | Zero | $449.99 | 512 Wh | 60 minutes | 40 V | 16 Ah | 21 inches | 2 Years | 115 mins | 4 count | 7 settings | 4 Ah |
| Kobalt 80-Volt 21-in Self-propelled Battery Lawn Mower |
ELITE
94
|
Exceptional | Strong | Exceptional | $599.00 | 576 Wh | 75 minutes | 80 V | 9 Ah | 21 inches | 5 Years | 60 mins | 2 count | 7 settings | 5 Ah |
| Greenworks 82V 25-Inch Battery Powered Self-Propelled Lawn Mower |
ELITE
86
|
Fair | Strong | Strong | $979.97 | 787.20 Wh | 60 minutes | 82 V | 12 Ah | 25 inches | 4 Years | 30 mins | 3 count | 7 settings | 4 Ah |
| LiTHELi 18-Inch Brushless Self-Propelled Mower |
MEDIOCRE
59
|
Exceptional | Mediocre | Mediocre | $276.59 | 256 Wh | 50 minutes | 40 V | 8 Ah | 18 inches | 5 Years | 120 mins | 2 count | 6 settings | 4 Ah |
Rankings
