Document Overview
Key Findings The ETENWOLF HB3 hair dryer passed all four operating-temperature conditions — high-temperature discharge, low-temperature discharge, low-temperature charge, and high-temperature charge — with normal startup, correct battery display, and full button functionality confirmed in every scenario. The result is classified For Reference Only. Product:…
- Document type
- Certification Report
- Prepared by
- Alex Newman
- Published
- Last reviewed
- Topics
- Environmental Testing
Key Findings
The ETENWOLF HB3 hair dryer passed all four operating-temperature conditions — high-temperature discharge, low-temperature discharge, low-temperature charge, and high-temperature charge — with normal startup, correct battery display, and full button functionality confirmed in every scenario. The result is classified For Reference Only.
- Product: HB3 Hair Dryer
- Report No.: 2025060501
- Test Date: 2025-06-05
- Sample: HB3-8# (1 pc)
- Discharge range: −20 °C to 70 °C
- Charge range: 0 °C to 45 °C
- Overall verdict: For Reference Only (■ For Reference Only)
Test Overview
| Field | Detail |
|---|---|
| Test Title | Hair Dryer Operating Temperature Test (吹风机工作温度测试) |
| Product No. / Name | Hair Dryer (吹风机) |
| Model / Type Specification | HB3 |
| Report No. | 2025060501 |
| Test Date | 2025-06-05 |
| Sample Quantity / No. | 1 pcs — HB3-8# |
| Test Type | ■ Reliability Test (可靠性测试) |
| Test Standard | Internal Control Standard (内控标准) |
| Test Purpose | Evaluate the effect of high- and low-temperature storage conditions on the operating temperature performance of the sample |
| Acceptance Criterion | Sample operates normally at the specified ambient temperatures |
| Manufacturer / Brand | ETENWOLF |
Test Equipment & Setup
| Item | Detail |
|---|---|
| Test Equipment | Constant-temperature and constant-humidity chamber (恒温恒湿箱) |
| Room Temperature | 23 °C |
| Room Humidity | 60 % |
| High-temperature discharge soak | 70 °C, 2 hours |
| Low-temperature discharge soak | −20 °C, 2 hours |
| Low-temperature charge soak | 0 °C, 2 hours |
| High-temperature charge soak | 45 °C, 2 hours |
Test Procedure
- Pre-test: Confirm sample identification (HB3-8#) and record ambient room conditions (23 °C, 60 % RH).
- High-temperature discharge: Place sample in the chamber set to 70 °C; stabilise for 2 hours; power on and verify normal operation, battery level display, and all button functions.
- Low-temperature discharge: Place sample in the chamber set to −20 °C; stabilise for 2 hours; power on and verify normal operation, battery level display, and all button functions.
- Low-temperature charge: Place sample in the chamber set to 0 °C; stabilise for 2 hours; connect charger and verify stable charging and correct battery level display.
- High-temperature charge: Place sample in the chamber set to 45 °C; stabilise for 2 hours; connect charger and verify stable charging and correct battery level display.
- Post-test: Remove sample, return to room temperature, document all observations, photographs, and sign-off signatures.
Acceptance Criteria: The sample must start up and operate normally, display battery level correctly, and have all buttons functioning as expected under each temperature condition.
Test Data & Results
| Sample ID | Test Condition | Issue Description / Observations |
|---|---|---|
| HB3-8# | High-Temperature Discharge Test (高温放电测试) | After storing the sample at 70 °C for 2 hours, it powered on normally, battery level display was normal, and all button functions were normal. |
| HB3-8# | Low-Temperature Discharge Test (低温放电测试) | After storing the sample at −20 °C for 2 hours, it powered on normally, battery level display was normal, and all button functions were normal. |
| HB3-8# | Low-Temperature Charge Test (低温充电测试) | After storing the sample at 0 °C for 2 hours, it charged stably and normally, and battery level display was normal. |
| HB3-8# | High-Temperature Charge Test (高温充电测试) | After storing the sample at 45 °C for 2 hours, it charged stably and normally, and battery level display was normal. |
Summary: The HB3 sample operated normally under discharge conditions at −20 °C and 70 °C, and charged stably and normally under the required 0 °C and 45 °C conditions.
Conclusion
| Field | Detail |
|---|---|
| Result | ■ For Reference Only (供参考) |
| Pass criteria | Sample operates normally at specified ambient temperatures |
| Test standard | Internal Control Standard |
| Discharge temperature range | −20 °C to 70 °C |
| Charge temperature range | 0 °C to 45 °C |
| Samples tested | HB3-8# (1 pc) |
| Verdict | All four operating-temperature conditions met — no anomalies observed |
Document Information
| Role | Name (Pinyin) | Date |
|---|---|---|
| Tested By (测试/日期) | Li Guanghua | 2025-06-05 |
| Checked By (审核/日期) | Zhang Ronggui | 2025-06-05 |
| Approved By (核准/日期) | Mai Shaoqiang | 2025-06-05 |
| Form No. | BTK-R-Q142/AO | |
Frequently Asked Questions
What temperature range can the ETENWOLF HB3 hair dryer operate in when discharging?
The HB3 was tested and confirmed to operate normally under discharge conditions between −20 °C and 70 °C. After a 2-hour soak at each extreme, the unit powered on correctly, displayed battery level accurately, and all buttons functioned as expected.
What are the safe charging temperatures for the HB3 hair dryer?
The HB3 charges stably and normally between 0 °C and 45 °C. Both the low-temperature (0 °C) and high-temperature (45 °C) charge tests confirmed stable charging performance with correct battery level display after a 2-hour conditioning period.
What test standard was used for the HB3 operating temperature test?
The test was conducted against ETENWOLF’s internal control standard (内控标准). The reliability test covered four scenarios — high-temperature discharge, low-temperature discharge, low-temperature charge, and high-temperature charge — using a constant-temperature and constant-humidity chamber at a reference room condition of 23 °C and 60 % RH.
What does a result of ‘For Reference Only’ mean in an ETENWOLF test report?
‘For Reference Only’ (供参考) indicates that the test data is provided as informational baseline documentation rather than a formal compliance certification. The sample still demonstrated full functional performance across all tested temperature conditions; the designation reflects the internal classification of this particular test run.
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