Document Overview
Key Findings The CL5 Rechargeable Camping Lantern successfully passed all operating temperature tests, demonstrating stable charging and consistent illumination performance across high and low temperature conditions. Product: CL5 Camping Lantern Report No.: 2025093001 Test Date: 2025-09-30 Samples: 2 pcs (CL5-6#, CL5-7#) Test Type: Reliability Test…
- Document type
- Test Report
- Prepared by
- Ryan Cooper
- Published
- Last reviewed
- Topics
- Environmental Testing
Key Findings
The CL5 Rechargeable Camping Lantern successfully passed all operating temperature tests, demonstrating stable charging and consistent illumination performance across high and low temperature conditions.
- Product: CL5 Camping Lantern
- Report No.: 2025093001
- Test Date: 2025-09-30
- Samples: 2 pcs (CL5-6#, CL5-7#)
- Test Type: Reliability Test
- Standard: Internal Control Standard
- Charging temperature range: 0°C to 45°C
- Discharge/illumination temperature range: −20°C to 65°C
- Verdict: PASS — all modes and brightness levels functioned normally at all test temperatures
Test Overview
| Field | Details |
|---|---|
| Test Type | Environmental Testing — Reliability Test (Operating Temperature) |
| Test Standard | Internal Control Standard |
| Report No. | 2025093001 |
| Test Date | 2025-09-30 |
| Product | CL5 Rechargeable Camping Lantern |
| Model / Specification | CL5 |
| Manufacturer | ETENWOLF |
| Sample Quantity / ID | 2 pcs — CL5-6#, CL5-7# |
| Test Purpose | Evaluate the effect of high and low temperature storage conditions on the operating performance of the product during use |
| Test Environment | Room Temperature: 23°C, Relative Humidity: 60% |
Test Equipment & Setup
| Item | Details |
|---|---|
| Test Equipment | Constant Temperature & Humidity Chamber; Power Meter |
| Charging Condition Temperature Range | 0°C to 45°C (samples stabilized at temperature before charging) |
| Discharge / Illumination Condition Temperature Range | −20°C to 65°C (samples stabilized at temperature before discharge) |
| Storage Duration at Each Temperature | 2 hours |
| Ambient Room Temperature | 23°C |
| Ambient Relative Humidity | 60% |
Test Procedure
- Pre-Test: Inspect all sample units (CL5-6#, CL5-7#) for physical integrity. Record initial condition.
- High-Temperature Charge Test: Place samples in the constant temperature & humidity chamber set to 45°C. Allow samples to stabilize for 2 hours. Connect charger and verify charging stability, battery level display, and current reading.
- Low-Temperature Charge Test: Set chamber to 0°C. Allow samples to stabilize for 2 hours. Connect charger and verify charging stability, battery level display, and current reading.
- High-Temperature Illumination Test: Set chamber to 65°C. Allow samples to stabilize for 2 hours. Power on lantern, cycle through all brightness levels, and verify consistent brightness and normal power button switching.
- Low-Temperature Illumination Test: Set chamber to −20°C. Allow samples to stabilize for 2 hours. Power on lantern, cycle through all brightness levels, and verify consistent brightness and normal power button switching.
- Post-Test: Remove samples from chamber. Perform visual inspection. Record all observations and compare against acceptance criteria.
- Acceptance Criteria: Samples must operate normally at all specified temperatures — charging must be stable with correct display readings; all illumination modes must maintain consistent brightness; power button must switch modes normally. No anomalies permitted.
Test Data & Results
| Sample ID | Test Condition | Issue Description / Observations |
|---|---|---|
| CL5-6#, CL5-7# | High-Temperature Charge Test | After 2 hours of storage in a high-temperature environment of 45°C, charging was stable; battery level and current readings displayed normally. |
| CL5-6#, CL5-7# | Low-Temperature Charge Test | After 2 hours of storage in a low-temperature environment of 0°C, charging was stable; battery level and current readings displayed normally. |
| CL5-6#, CL5-7# | High-Temperature Illumination Test | After 2 hours of storage in a high-temperature environment of 65°C, no change in brightness at any illumination level upon power-on; power button switching between modes functioned normally. |
| CL5-6#, CL5-7# | Low-Temperature Illumination Test | After 2 hours of storage in a low-temperature environment of −20°C, no change in brightness at any illumination level upon power-on; power button switching between modes functioned normally. |
Observations: Both sample units performed within specification across all four test conditions. No charging anomalies, display errors, brightness degradation, or button failures were recorded. The original source data notes the high-temperature illumination test condition as “低温-65°C” which is interpreted as 65°C (high temperature discharge condition) consistent with the test design where the discharge range is −20°C to 65°C.
Conclusion
| Field | Details |
|---|---|
| Overall Result | ■ Pass |
| Standard Applied | Internal Control Standard — samples must operate normally within specified temperature ranges |
| Charging Conditions | 0°C to 45°C, 2 hours stabilization per condition |
| Illumination / Discharge Conditions | −20°C to 65°C, 2 hours stabilization per condition |
| Samples Tested | 2 pcs — CL5-6#, CL5-7# |
| Verdict | The CL5 Camping Lantern passed the operating temperature test. Both high and low temperature operating conditions produced normal illumination, stable charging, and correct display readings. No failures or anomalies were observed. |
Document Information
| Role | Name (Pinyin) | Date |
|---|---|---|
| Tested By | Li Guanghua | 2025-09-30 |
| Checked By | Zhang Ronggui | 2025-09-30 |
| Approved By | Mai Shaoqiang | 2025-09-30 |
| Field | Details |
|---|---|
| Form Number | BTK-R-Q142/AO |
| Article Author | Ryan Cooper |
| Source File | CL5露营灯-工作温度2025.9.30.xlsx — Sheet: 工作温度测试 |
Frequently Asked Questions
What temperature range can the CL5 Camping Lantern be safely charged in?
The CL5 is designed to charge within an ambient temperature range of 0°C to 45°C. Testing confirmed that charging remains stable, and both the battery level indicator and current display function correctly throughout this range after 2 hours of temperature stabilization.
Does cold weather affect the CL5’s brightness or switching performance?
No. In testing at −20°C, both sample units maintained consistent brightness across all illumination levels and the power button continued to cycle between modes without issue. Performance was equivalent to room-temperature operation.
What test standard was used for this operating temperature evaluation?
This test was conducted against ETENWOLF’s internal control standard, which requires the product to operate normally across the full specified temperature range. The test covered both charging conditions (0°C to 45°C) and discharge/illumination conditions (−20°C to 65°C).
What equipment was used to conduct this test?
The test used a constant temperature and humidity chamber to expose samples to the required thermal conditions, and a power meter to monitor charging current and battery level readings during the charging phase of the test.