Teardown Library
Teardown Reports & Sourcing Notes
Component-level teardowns, BOM cost analysis and supplier verification notes on consumer electronics and appliances — measured against the claims made on the listing.
42 reports
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8 Red Flags in a Chinese Supplier Quotation Before You Pay
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How to Verify a Battery Pack Claim Before Placing an Order
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ICR vs IMR vs INR Batteries: Hardware Sourcing Guide
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Why a Bigger Motor Does Not Always Make a Tire Inflator
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RMB 5 vs RMB 8 vs RMB 10 Tire Inflator Motors: What
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Electric Toothbrush Teardown: What Buyers Miss Inside
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Portable Tire Inflator Teardown: 21700 vs 18650 BOM
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High-Speed Hair Dryer Teardown: Why 27.1 m/s Airflow Was
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Hair Dryer Temperature Test: Is 152.2°C a Buyer Risk?
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Waist Fan Airflow Test: Why Higher RPM Does Not Mean
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Waist Fan Cooling Plate Test: More Airflow Does Not Mean
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$199 vs $29 Hair Dryer: Wind Speed Test & Teardown
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Three Waist Fans Tested: Does a Higher Price Mean Better
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Brushed Motor vs Brushless Motor: What’s the Real
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The 110,000 RPM Lie: Why Motor Material Dictates Your
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Real BLDC Mini Fan Teardown: We Found Something Rare
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$5 Dyson Copy Hair Dryer Teardown: 6 Hidden Safety & BOM
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21700 Lithium Battery Protection Board: The Tiny BOM
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$27 Luxury Hair Clipper Teardown: What a BOM Audit
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Car Air Pump Teardown: $12.99 vs $19.99 vs $24.99: What
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Fabric Shaver Teardown: $5 EXW: Brushed Motor Sold as
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Cooling Fan Teardown: $3 EXW Fan Labeled 3000mAh, Tested
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$6.50 Dyson-Copy Hair Dryer: Complete Component-Level
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Dyson-Copy Hair Dryer Safety Audit: Fire & Shock Hazards
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$5 vs. $50 Toothbrush: The Hidden PCBA Gap in Electric
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BOM Audit: Why Two Identical-Looking Fans Have a 3X Cost
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How to Evaluate a Cooling Fan Supplier: 5 Engineering
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Two Lies, One Product. $3 BOM, $6 Factory.
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High-Speed Hair Dryer Teardown: $8 BOM Risks
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Hair Dryer Motor Teardown: How to Verify RPM Specs and
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Portable Fan Teardown: The $0.50 "Premium" Illusion vs.
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Laifen Electric Toothbrush Teardown: Why Professional
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Handheld Fan Battery Fraud: 3000mAh Claim, 800mAh Reality
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Dyson Copy vs Genuine BLDC Motor Teardown
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Hair Dryer PCB Comparison: Dyson Copy vs Genuine Brand
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$5 Dyson Copy Teardown: No Ground Wire, Fake RPM, Fire
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Air Pump BOM Breakdown: $23 Factory Cost, $56 Retail
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Premium Handheld Fan Teardown: $38 Factory Cost Without
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18650 Battery Sourcing Guide: Real vs Recycled Cells
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Laifen Electric Toothbrush Teardown: Inside a $39 Sonic
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High-Speed Hair Dryer BOM Teardown: Component Costs &
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