ETENWOLF FL1 Kids Rechargeable Flashlight Life Cycle Test Report (100 H Charge–Discharge)

Document Overview

Key Findings All three FL1 samples completed the 100-hour charge–discharge life cycle test with zero functional failures, confirming the product’s durability meets the internal reliability standard. Product: ETENWOLF FL1 Kids Rechargeable Flashlight Report No.: 2025081101 Test Duration: 100 hours (charge–discharge cycles) Samples Tested: 3 units…

Document type

Test Report

Prepared by

Ryan Cooper

Published

July 21, 2026

Last reviewed

July 21, 2026

Topics

Mechanical Reliability

Key Findings

All three FL1 samples completed the 100-hour charge–discharge life cycle test with zero functional failures, confirming the product’s durability meets the internal reliability standard.

• Product: ETENWOLF FL1 Kids Rechargeable Flashlight
• Report No.: 2025081101
• Test Duration: 100 hours (charge–discharge cycles)
• Samples Tested: 3 units (FL1-3#, FL1-4#, FL1-6#)
• Charge Time per Cycle: approx. 2 hours 25 minutes
• Discharge Time per Cycle: approx. 3 hours 10 minutes
• Verdict: PASS — all samples meet the 100 H aging standard

Test Overview

Test Equipment & Setup

Test Procedure

1. Pre-test: Fully charge each sample unit before beginning the test sequence.
2. Discharge cycle: Operate each sample until battery is fully depleted.
3. Recharge cycle: Recharge sample to full capacity; record charge duration.
4. Repeat: Continue charge–discharge cycles until the cumulative runtime reaches the 100-hour life standard.
5. Monitoring during aging: Observe LED light output uniformity, power button rebound, and any abnormal phenomena throughout the aging process.
6. Post-test inspection: After 100 hours, inspect appearance, LED light source, button function, and battery condition.
7. Teardown inspection: Disassemble each unit to inspect the battery for swelling or electrolyte leakage.

Acceptance Criteria: All functions must remain fully operational with no failure after the 100-hour charge–discharge life cycle. No cracking, charring, or deformation of the housing; no battery swelling or leakage.

Test Data & Results

Test Picture Observations (TEST PICTURES):

Overall Test Result: All prototype samples achieved the 100-hour aging standard. No functional failures observed. Durability confirmed to be good. Life cycle meets test requirements. Aging test concluded.

Conclusion

Document Information

Frequently Asked Questions

How long does the ETENWOLF FL1 flashlight battery last on a single charge?

In life cycle testing, the FL1 discharged for approximately 3 hours and 10 minutes per cycle under standard test conditions (23 °C, 60 % RH). Actual runtime may vary depending on ambient temperature, brightness setting, and usage pattern.

How many charge–discharge cycles can the FL1 flashlight endure?

The FL1 was validated to the 100-hour cumulative charge–discharge life standard per ETENWOLF’s internal reliability specification. All three tested units passed with no functional failure, battery swelling, or housing damage.

Is the FL1 kids flashlight safe after repeated charging?

Yes. Post-aging teardown inspection confirmed that the battery showed no swelling or electrolyte leakage after 100 hours of charge–discharge cycling. The housing also showed no cracking, charring, or deformation.

How long does it take to fully charge the ETENWOLF FL1 flashlight?

During the life cycle test, each full charge cycle took approximately 2 hours and 25 minutes under controlled lab conditions. Charge time may vary slightly depending on the power adapter and ambient temperature.

Related Products

Explore the full ETENWOLF FL1 Kids Rechargeable Flashlight and related test documentation:

• ETENWOLF FL1 Kids Rechargeable Flashlight — Product Page
• ETENWOLF Lighting Gear Collection

Additional test sheets from the same report file:

• FL1-手电筒寿命报告 — Life Cycle Test Report (current sheet)
• 老化过程时间记录 — Aging Process Time Log (sibling sheet from the same Excel file)