Document Overview
Key Findings The ETENWOLF HB3 electric hair dryer was subjected to a 100 cm, 6-face free-fall drop test and failed — post-drop inspection revealed indicator light misalignment, top cover detachment, and battery solder tab separation. Product: HB3 Electric Hair Dryer (HB3-电动吹风机) Drop Height: 100 cm…
- Document type
- Test Report
- Prepared by
- Alex Newman
- Published
- Last reviewed
- Topics
- Mechanical Reliability
Key Findings
The ETENWOLF HB3 electric hair dryer was subjected to a 100 cm, 6-face free-fall drop test and failed — post-drop inspection revealed indicator light misalignment, top cover detachment, and battery solder tab separation.
- Product: HB3 Electric Hair Dryer (HB3-电动吹风机)
- Drop Height: 100 cm
- Drop Faces: 6 (one drop per face, 6 total)
- Sample Size: 3 PCS
- Overall Result: FAIL
- Defects Found: Indicator light misalignment, top cover detachment, battery solder tab separation
- Report No.: 2025052001
- Test Date: 2025-05-20
Test Overview
| Field | Details |
|---|---|
| Test Type | Drop Test (跌落试验) |
| Report Number | 2025052001 |
| Page | 1.0 |
| Date | 2025-05-20 |
| Product Name | HB3 Electric Hair Dryer (HB3-电动吹风机) |
| Manufacturer | BTK |
| Surface Treatment | Not specified |
| Sample Quantity | 3 PCS |
| Test Reason | New Product (■新产品 New product) |
| Test Objective | Evaluate the reliability of finished product by simulating anti-drop impact capability after packaging |
| Laboratory Temperature | 22 °C |
| Laboratory Humidity | 55% RH |
Test Equipment & Setup
| Parameter | Details |
|---|---|
| Instrument Name | Single-Arm Drop Testing Machine (单臂跌落试验机) |
| Drop Height | 100 cm |
| Number of Drops | 6 faces (6 drops total) |
| Test Temperature | 22 °C |
| Test Humidity | 55% RH |
| Sample Weight | Not recorded |
| Test Class / Level | Not specified |
Test Procedure
- Pre-Test: Record sample quantity (3 PCS), ambient temperature (22 °C), and relative humidity (55% RH). Inspect each sample for pre-existing cosmetic and functional defects. Document the initial condition with photographs (pre-drop images captured).
- Setup: Mount the HB3 hair dryer on the single-arm drop testing machine at a release height of 100 cm above a hard surface.
- Drop Execution: Drop the sample sequentially onto all 6 faces — Face 1 through Face 6 — one drop per face, for a total of 6 drops per sample unit.
- Post-Drop Inspection: After completing all 6 drops, photograph the sample from all angles. Inspect the exterior for cracks or deformation, verify all mechanical assemblies (top cover, indicator lights, internal components), and perform a functional power-on test.
- Acceptance Criteria: Product appearance and function must be normal; the housing must show no cracking (产品外观功能正常, 外壳无开裂).
- Documentation: Record all observations, defects, and photographic evidence in the test report. Issue Pass / Fail / Reference verdict.
Test Data & Results
| Drop Sequence | Observation |
|---|---|
| Before Drop | Pre-drop condition documented; single-arm drop testing machine and power controller photographed |
| Drop 1 (Face 1) | Indicator light misalignment detected (跌落后指示灯错位) |
| Drop 2 (Face 2) | Indicator light misalignment continued |
| Drop 3 (Face 3) | Top cover detachment (顶盖脱扣) |
| Drop 4 (Face 4) | Top cover detachment continued |
| Drop 5 (Face 5) | Battery solder tab separation (电池焊片脱落) |
| Drop 6 (Face 6) | Battery solder tab separation continued |
Summary Observation: Following 100 cm high-altitude drop testing, the samples require improvement (样品高空100cm跌落后，有待改善). Three distinct failure modes were identified: indicator light misalignment, top cover detachment, and battery solder tab separation.
Conclusion
| Field | Details |
|---|---|
| Verdict | FAIL (■不合格 Fail) |
| Pass Option | Not selected (口合格 Pass) |
| Reference Option | Not selected (口参考 Reference) |
| Test Standard / Condition | 100 cm drop height, 6-face drop sequence, single-arm drop testing machine |
| Acceptance Criteria | Normal appearance and function; no housing cracks |
| Samples Tested | 3 PCS |
| Failure Modes | Indicator light misalignment; top cover detachment; battery solder tab separation |
| Recommendation | Product requires structural improvement before re-testing |
Document Information
| Role | Name (Pinyin) |
|---|---|
| Approval (核准) | Mai Shaoqiang |
| Review (审查) | Zhang Ronggui |
| Tester (试验人) | Li Guanghua |
| Form Number | BTK-R-Q-087A/1 |
Frequently Asked Questions
What caused the HB3 hair dryer to fail the 100 cm drop test?
Three failure modes were identified: indicator light misalignment after the first two drops, top cover detachment during the third and fourth drops, and battery solder tab separation during the fifth and sixth drops. These defects indicate structural weaknesses in the indicator assembly, top cover latch mechanism, and internal battery connection that must be addressed before the product can pass reliability testing.
What are the acceptance criteria for the HB3 drop test?
The product must retain normal appearance and full function after all 6 drops from 100 cm. Specifically, the housing must show no cracking, all mechanical assemblies must remain intact, and the unit must power on and operate correctly. The HB3 samples tested did not meet these criteria.
How many samples were tested and what was the test environment?
Three samples (3 PCS) were tested. The laboratory environment was maintained at 22 °C and 55% RH. The instrument used was a single-arm drop testing machine, and each sample was dropped onto all 6 faces from a height of 100 cm.
What happens next after a Fail result in the HB3 drop test?
A Fail verdict means the product requires engineering improvements before it can be approved for release. The identified failure points — indicator light mounting, top cover latch, and battery solder connections — must be redesigned or reinforced. After corrective actions are implemented, the drop test must be repeated to verify that the product meets the acceptance criteria.
Related Products
The following reports are from the same test file (HB3吹风机-跌落测试报告 2025.5.20.xls) and cover additional data for this product line:
Explore other ETENWOLF product reliability reports and inflator tools at etenwolfgroup.com.