Audit Lab - Product Teardowns & BOM Analysis

Audit Lab

Product teardowns, BOM cost breakdowns, and component-level quality verification.

Hair dryer motor teardown

High-Speed Hair Dryer Audit: Motor & MOS Tube Disassembly

We opened up a trending $35 Amazon generic blow dryer. Here is how the factory cut costs on the control board and how it impacts your defect rate.

Key findings: undersized MOS tube on PCB causes 12% higher failure rate within first 3 months. Motor bearings use ABEC-1 grade instead of ABEC-3 advertised. Heat dissipation path is compromised by a missing thermal pad.

18650 battery capacity test

The 18650 Cell Reality Check: Claimed 3000mAh vs. Real 800mAh

Handheld fans and small appliances are notorious for battery fraud. See how our lab capacity test catches safety hazards before cargo leaves the port.

A supplier labeled generic grey-wrap cells as 3000mAh Samsung 30Q equivalents. Actual discharge test: 820mAh at 0.2C. Internal resistance 87mOhm (should be under 25mOhm). This is not just a capacity lie — it is a fire hazard.