Document Overview
Key Findings The ETENWOLF CL5 Rechargeable Camping Lantern successfully passed the high-low temperature storage cycle test, showing no appearance abnormalities or functional failures after 72 hours of extreme-temperature exposure. Product: CL5 Camping Lantern Report No.: 2025101001 Test Dates: 2025-10-07 to 2025-10-10 High-Temperature Condition: 60 °C,…
- Document type
- Test Report
- Prepared by
- Ryan Cooper
- Published
- Last reviewed
- Topics
- Environmental Testing
Key Findings
The ETENWOLF CL5 Rechargeable Camping Lantern successfully passed the high-low temperature storage cycle test, showing no appearance abnormalities or functional failures after 72 hours of extreme-temperature exposure.
- Product: CL5 Camping Lantern
- Report No.: 2025101001
- Test Dates: 2025-10-07 to 2025-10-10
- High-Temperature Condition: 60 °C, 80 % RH, 2 hours
- Low-Temperature Condition: −20 °C, 2 hours
- Total Storage Duration: 72 hours
- Samples Tested: 2 pcs
- Verdict: Pass — lighting function and charging function both normal after test
Test Overview
| Field | Detail |
|---|---|
| Test Type | High-Low Temperature Storage Test (温度冲击循环测试) |
| Sheet / Report Title | 高低温存储测试 |
| Report No. | 2025101001 |
| Page | 1 |
| Test Dates | 2025-10-07 to 2025-10-10 |
| Product Name | ETENWOLF CL5 Camping Lantern (CL5-露营灯) |
| Manufacturer | BTK |
| Surface Treatment | / |
| Sample Quantity | 2 pcs |
| Test Reason | New product qualification (■ New Product) |
| Test Purpose | Evaluate the durability of the prototype unit when stored in extreme-temperature environments |
| Laboratory Environment | Temperature: 24 °C; Humidity: 45 % RH |
Test Equipment & Setup
| Item | Detail |
|---|---|
| Instrument Name | Constant Temperature and Humidity Testing Machine (恒温恒湿试验机) |
| Test Condition 2.1 — High Temperature | 60 °C, Humidity 80 % RH, duration 2 hours |
| Test Condition 2.2 — Low Temperature | −20 °C, duration 2 hours |
| Test Condition 2.3 — Total Storage | 72 hours cumulative |
| Test Condition 2.4 | Functional test after storage |
| Test Requirement | Verify stability of the unit under extreme environmental conditions |
| Test Class / Level | — (not specified) |
Test Procedure
- Pre-Test: Record the laboratory ambient conditions (24 °C, 45 % RH). Inspect and document the appearance and functional status of all 2 sample units before placement in the chamber.
- Chamber Setup: Configure the constant temperature and humidity testing machine per the programmed control profile.
- High-Temperature Exposure: Set the chamber to 60 °C and 80 % RH. Maintain for 2 hours.
- Low-Temperature Exposure: Set the chamber to −20 °C (no humidity control specified). Maintain for 2 hours.
- Cycle / Total Storage: Continue the storage cycle for a cumulative total of 72 hours per the programmed profile.
- Post-Test — Visual Inspection: Remove samples and inspect the exterior for any deformation, cracking, discoloration, or other appearance abnormalities.
- Post-Test — Functional Test: Power on each unit and verify lighting operation. Connect a charger and verify charging function.
- Acceptance Criteria: No appearance abnormalities; lighting function and charging function both operate normally. Any failure of appearance or function constitutes a Fail result.
Test Data & Results
| Check Item | Condition | Observation / Result |
|---|---|---|
| Pre-test appearance | Ambient (24 °C, 45 % RH) | Normal — documented in pre-test image |
| Programmed control profile | Chamber program | Profile confirmed and recorded (程序控制图) |
| Post-test appearance | After 72 h storage cycle | No abnormalities observed |
| Post-test lighting function | Power-on after test | Normal (开机照明正常) |
| Post-test charging function | Charging after test | Normal (充电正常) |
| Overall result | Full cycle: High 60 °C / 80 % RH 2 h + Low −20 °C 2 h, total 72 h | Samples passed; no appearance abnormality, no functional failure |
Test images captured at three stages: before test (测试前), programmed control chart (程序控制图), and post-test functional verification showing normal lighting and charging.
Conclusion
| Field | Detail |
|---|---|
| Test Result Summary | Samples passed the extreme-environment cyclic thermal shock test (样品通过极端环境循环湿热冲击测试，外观无异常，功能无失效) |
| Standard / Requirement | Verify stability under extreme environmental conditions; high temp 60 °C / 80 % RH 2 h, low temp −20 °C 2 h, total 72 h storage |
| Test Conditions | Lab: 24 °C, 45 % RH; Chamber: 60 °C 80 % RH / −20 °C cycle, 72 h total |
| Samples | 2 pcs — CL5 Camping Lantern |
| Verdict | ■ Pass (合格) |
Document Information
| Role | Name (Pinyin) |
|---|---|
| Approval (核准) | Mai Shaoqiang |
| Review (审查) | Zhang Ronggui |
| Tester (试验人) | Li Guanghua |
| Form Number (表单编号) | BTK-R-Q-087A/1 |
Frequently Asked Questions
What temperature range was the ETENWOLF CL5 lantern tested across?
The CL5 was tested between −20 °C (low-temperature condition, 2 hours) and +60 °C at 80 % relative humidity (high-temperature condition, 2 hours), for a cumulative storage duration of 72 hours.
Did the CL5 lantern pass the high-low temperature storage test?
Yes. Both sample units passed. After 72 hours of cyclic thermal exposure, post-test inspection confirmed no appearance abnormalities, normal lighting function, and normal charging function. The official judgment is Pass (合格).
What does the high-low temperature storage test verify for a camping lantern?
This test evaluates how well the product withstands long-term storage in extreme hot and cold environments — conditions that can occur during shipping, warehousing, or outdoor use in summer heat or winter cold. It checks that materials, electronics, and battery systems remain intact and fully functional after that stress.
How many samples were used in the CL5 temperature test?
Two (2) production-representative samples of the ETENWOLF CL5 Rechargeable Camping Lantern were used for this test, conducted by BTK on behalf of ETENWOLF between 2025-10-07 and 2025-10-10.
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