Document Overview
Key Findings The ETENWOLF HB2 Hair Dryer successfully completed a 72-hour high/low temperature storage test with no appearance anomalies, normal power-button function, and normal charging operation after exposure — result: Pass. Product: HB2 Hair Dryer (HB2-吹风机) Manufacturer: BTK Samples: 3 pcs High-temp condition: 60 °C,…
- Document type
- Test Report
- Prepared by
- Alex Newman
- Published
- Last reviewed
- Topics
- Environmental Testing
Key Findings
The ETENWOLF HB2 Hair Dryer successfully completed a 72-hour high/low temperature storage test with no appearance anomalies, normal power-button function, and normal charging operation after exposure — result: Pass.
- Product: HB2 Hair Dryer (HB2-吹风机)
- Manufacturer: BTK
- Samples: 3 pcs
- High-temp condition: 60 °C, 80 % RH, 2 h
- Low-temp condition: −20 °C, 2 h
- Total storage duration: 72 h
- Test dates: 2025-04-17 to 2025-04-21
- Verdict: Pass
Test Overview
| Field | Detail |
|---|---|
| Test Type | High / Low Temperature Storage Test (高低温存储测试) |
| Report Number | 2025042101 |
| Page | 1 |
| Test Dates | 2025-04-17 to 2025-04-21 |
| Product Name | HB2 Hair Dryer (HB2-吹风机) |
| Manufacturer | BTK |
| Surface Treatment | / |
| Sample Quantity | 3 pcs |
| Test Reason | New Product (■ New product selected) |
| Test Purpose | Evaluate the durability of the prototype stored under extreme temperature environments |
| Laboratory Environment | Temperature 24 °C; Humidity 45 % RH |
| Test Class / Grade | (Not specified) |
Test Equipment & Setup
| Item | Detail |
|---|---|
| Instrument Name | Constant Temperature and Humidity Testing Machine (恒温恒湿试验机) |
| High-Temp Condition | 60 °C, Humidity 80 % RH, duration 2 h |
| Low-Temp Condition | −20 °C, duration 2 h |
| Total Storage Duration | 72 h |
| Post-Storage Verification | Functional test (power on / button function / charging) |
Test Procedure
- Pre-test: Record baseline appearance and functional status of all 3 HB2 samples. Photograph samples before testing (试验前图).
- High-temperature exposure: Place samples in the constant temperature and humidity chamber. Set chamber to 60 °C and 80 % RH. Hold for 2 hours.
- Low-temperature exposure: Adjust chamber to −20 °C. Hold for 2 hours.
- Extended storage: Continue storage cycle to accumulate a total of 72 hours of combined climate exposure. Monitor program-control chart (程序控制图) throughout.
- Post-test inspection: Remove samples from chamber. Photograph samples after testing (试验后图).
- Functional verification: Inspect appearance for anomalies. Power on each unit and confirm power-button response. Verify charging function operates normally.
- Acceptance criteria: No functional failure; normal power-on confirmed; no appearance defects. Any failure → result recorded as Fail.
Test Data & Results
| Check Item | Requirement | Observation After 72 h Storage | Result |
|---|---|---|---|
| Appearance | No abnormality | No appearance anomalies detected on any of the 3 samples | Pass |
| Power-on / Button Function | Normal power-on; button operates correctly | Power button functioned normally on all 3 samples | Pass |
| Charging Function | Charging operates normally | Charging confirmed normal on all 3 samples | Pass |
Observations: After 72 hours of high/low temperature climate storage conditions, all three HB2 hair dryer samples exhibited no appearance anomalies, normal power-button function, and normal charging behavior. The test image set comprised: pre-test photo (试验前图), program control chart (程序控制图), and post-test photo (试验后图).
Conclusion
| Field | Detail |
|---|---|
| Overall Result | Pass (■合格) |
| Test Conditions | High temp: 60 °C / 80 % RH / 2 h; Low temp: −20 °C / 2 h; Total: 72 h storage |
| Standard / Requirement | No functional failure; normal power-on after storage |
| Samples Tested | 3 pcs HB2 Hair Dryer |
| Verdict | All samples passed appearance inspection and functional verification |
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 temperature range was the ETENWOLF HB2 Hair Dryer tested at?
The HB2 was tested at both a high temperature of 60 °C with 80 % relative humidity for 2 hours and a low temperature of −20 °C for 2 hours, with a total combined storage duration of 72 hours.
Did the HB2 Hair Dryer pass the high/low temperature storage test?
Yes. All three HB2 samples passed. After 72 hours of extreme temperature storage, every unit showed no appearance anomalies, normal power-button operation, and normal charging function. The official verdict is Pass.
What equipment was used for the HB2 temperature storage test?
The test was conducted using a Constant Temperature and Humidity Testing Machine (恒温恒湿试验机) under laboratory ambient conditions of 24 °C and 45 % RH.
Why is high/low temperature storage testing important for hair dryers?
Hair dryers are shipped and stored across a wide range of climates. Extreme temperatures can degrade plastics, seals, and electronic components. This test confirms that the HB2 retains full functionality after exposure to both high heat and sub-zero cold, ensuring product reliability throughout the supply chain.