ETENWOLF CL3 Camping Lantern Operating Temperature Performance Test Report

Document Overview

Key Findings The ETENWOLF CL3 Camping Lantern successfully passed operating temperature performance testing across both high-temperature (65 °C) and low-temperature (−20 °C) conditions, demonstrating stable illumination and no significant performance degradation in either extreme environment. Product: CL3 Camping Lantern Report No.: 20260421-001 Test Date: 2026-04-21…

Document type: Test Report
Prepared by: Ryan Cooper
Published: July 21, 2026
Last reviewed: July 21, 2026
Topics: Environmental Testing

Key Findings

The ETENWOLF CL3 Camping Lantern successfully passed operating temperature performance testing across both high-temperature (65 °C) and low-temperature (−20 °C) conditions, demonstrating stable illumination and no significant performance degradation in either extreme environment.

Product: CL3 Camping Lantern
Report No.: 20260421-001
Test Date: 2026-04-21
Samples: 2 pcs (CL3-8#, CL3-9#)
Temperature Range Tested: −20 °C to 65 °C
Test Cycle: Low temp 2 h → High temp 2 h → Powered operation 4 h → Recovery at ambient 2 h
Overall Verdict: Pass — lights on immediately, no over-temperature protection triggered, stable continuous illumination

Test Overview

Field	Details
Product No. / Name	Camping Lantern
Model / Specification	CL3
Report No.	20260421-001
Test Date	2026-04-21
Sample Quantity / No.	2 pcs
Test Type	Reliability Test
Test Standard	Internal Control Standard
Test Purpose	Evaluate the effect of temperature on sample performance during operation under high- and low-temperature storage conditions
Test Criteria	Start-up performance, operational stability, and optical performance of the sample under rated operating environmental conditions

Test Equipment & Setup

Item	Details
Test Equipment	Constant Temperature and Humidity Chamber (恒温恒湿箱)
Low Temperature Condition	−20 °C
High Temperature Condition	65 °C
Test Cycle Sequence	Low temp 2 h → High temp 2 h → Powered operation 4 h → Ambient temperature recovery 2 h
Discharge / Operation Condition	Samples powered and discharged after environment stabilization at −20 °C and 65 °C

Test Procedure

Pre-test: Verify sample condition and record initial state of both units (CL3-8# and CL3-9#).
Low-temperature soak: Place samples in the constant temperature and humidity chamber set to −20 °C; maintain for 2 hours until the environment fully stabilizes.
High-temperature soak: Adjust chamber to 65 °C; maintain for 2 hours until the environment fully stabilizes.
Powered operation phase: Power on the samples and operate continuously for 4 hours while monitoring illumination brightness, stability, indicator status, and any protection triggers.
Ambient recovery: Remove samples from the chamber and allow them to recover at room temperature for 2 hours.
Post-test evaluation: Inspect and record start-up performance, brightness stability, flicker, indicator lamp behavior, and any over-temperature protection events.
Acceptance criteria: Samples must power on immediately, maintain stable brightness without flicker, show no over-temperature protection activation, and sustain continuous illumination suitable for outdoor high/low-temperature use.

Test Data & Results

Sample ID	Test Condition	Issue Description / Observations
CL3-8# / CL3-9#	High-Temperature Illumination Test (65 °C)	After storing samples in a 65 °C high-temperature environment for 2 hours, the units powered on and started normally with stable brightness and no flicker.
CL3-8# / CL3-9#	Low-Temperature Illumination Test (−20 °C)	After storing samples in a −20 °C low-temperature environment for 2 hours, the indicator LED flashed red upon start-up (returning to normal after recovery to ambient temperature); illumination brightness was stable with no flicker.

Overall Test Result: Lights on immediately upon power-up. No significant performance degradation observed. No over-temperature protection triggered. Illumination remained stable throughout continuous operation. The product meets the requirements for outdoor use in high- and low-temperature environments.

Conclusion

Field	Details
Overall Result	Pass (■合格)
Test Standard	Internal Control Standard
Test Conditions	−20 °C and 65 °C; cycle: low temp 2 h → high temp 2 h → powered operation 4 h → ambient recovery 2 h
Samples Tested	2 pcs — CL3-8#, CL3-9#
Verdict	The CL3 Camping Lantern powers on immediately, maintains stable and continuous illumination, and shows no over-temperature protection activation or significant performance degradation across the tested temperature range. The product satisfies outdoor high- and low-temperature operating requirements.

Document Information

Role	Name (Pinyin)	Date
Tested By	Li Guanghua	2026-04-21
Reviewed By	Zhang Ronggui	2026-04-21
Approved By	Mai Shaoqiang	2026-04-21

Field	Details
Form No.	BTK-R-Q142/AO

Frequently Asked Questions

Can the ETENWOLF CL3 Camping Lantern operate normally at −20 °C?

Yes. During low-temperature testing at −20 °C, the CL3 powered on and maintained stable illumination without flicker. The indicator LED did flash red upon initial start-up at that temperature, but this behavior resolved automatically once the unit returned to ambient temperature, and overall performance met the acceptance criteria.

Does the CL3 Camping Lantern trigger over-temperature protection at 65 °C?

No. After a 2-hour soak at 65 °C, the CL3 powered on normally with stable brightness and no over-temperature protection events were recorded during the 4-hour powered operation phase.

What temperature range is the ETENWOLF CL3 Camping Lantern rated for?

Based on this internal reliability test, the CL3 has been verified to start up and operate continuously across a range of −20 °C to 65 °C, covering the temperature extremes commonly encountered in outdoor camping environments.

What test standard was used for the CL3 operating temperature test?

The test was conducted against ETENWOLF’s internal control standard. The test cycle consisted of a low-temperature soak (−20 °C, 2 h), a high-temperature soak (65 °C, 2 h), a powered operation phase (4 h), and an ambient temperature recovery phase (2 h), using a constant temperature and humidity chamber.

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