Document Overview
Key Findings The ETENWOLF S7 tire inflator was tested across its full operating temperature range; all 3 units charged normally between 0°C and 45°C, while discharging at 74°C passed without issue, though 2 of 3 units triggered an E13 error at -20°C and recovered normal…
- Document type
- Certification Report
- Prepared by
- Daniel Wright
- Published
- Last reviewed
- Topics
- Environmental Testing
Key Findings
The ETENWOLF S7 tire inflator was tested across its full operating temperature range; all 3 units charged normally between 0°C and 45°C, while discharging at 74°C passed without issue, though 2 of 3 units triggered an E13 error at -20°C and recovered normal operation at -18°C.
- Report No.: 2025031201
- Test Date: 2025-03-12
- Samples: 3 units (S7 tire inflator)
- Charging range tested: 0°C and 45°C
- Discharging range tested: -20°C and 74°C
- Charging result: All 3 units passed — normal function at 0°C and 45°C
- Discharging at 74°C: All 3 units passed — normal function
- Discharging at -20°C: 2 of 3 units reported E13 error; recovered at -18°C. 1 unit operated normally at -20°C
- Overall verdict: For Reference Only (not a pass/fail determination)
Test Overview
| Field | Detail |
|---|---|
| Test Name | S7 Tire Inflator Operating Temperature Test |
| Product No./Name | Tire Inflator (充气泵) |
| Model / Type Specification | S7 |
| Report No. | 2025031201 |
| Test Date | 2025-03-12 |
| Sample Quantity / No. | 3 PCS |
| Test Type | Reliability Test (可靠性测试) |
| Test Standard | Internal Control Standard (内控标准) |
| Acceptance Criteria | No failure of function (功能无失效) |
| Product | ETENWOLF Vortex S7 Tire Inflator |
| Manufacturer | ETENWOLF |
| Test Purpose | To evaluate whether the sample meets requirements for charging and discharging at the specified environmental temperatures. |
| Ambient Conditions | Temperature: 23°C, Relative Humidity: 60% |
Test Equipment & Setup
| Equipment / Parameter | Detail |
|---|---|
| Constant Temperature & Humidity Chamber (恒温恒湿箱) | Used to condition samples at target temperatures |
| Power Supply (电源) | Used during charging and discharging tests |
| Power Meter (功率计) | Used to monitor electrical performance during test |
| Charging Test Temperatures | 0°C and 45°C |
| Discharging Test Temperatures | -20°C and 74°C |
| Conditioning Duration | Greater than 2 hours at each target temperature before testing |
| Ambient Room Temperature | 23°C |
| Ambient Room Humidity | 60% RH |
Test Procedure
- Pre-test conditioning (charging): Place all 3 sample units in the constant temperature and humidity chamber set to 0°C. Maintain for more than 2 hours. Immediately after conditioning, perform charging test. Repeat the conditioning and charging test at 45°C.
- Pre-test conditioning (discharging): Place all 3 sample units in the chamber set to -20°C. Maintain for more than 2 hours. Immediately after conditioning, perform discharging (inflation) test. Repeat the conditioning and discharging test at 74°C.
- During test: Monitor each unit for functional errors, abnormal behavior, or error codes. Record observations for each unit individually.
- Post-test inspection: Confirm all functions are operational after returning units to ambient conditions. Record any units that exhibited errors and note the temperature at which recovery occurred.
- Acceptance criteria: No failure of function (功能无失效) across all tested temperature conditions.
Test Data & Results
| Test Phase | Temperature | Result / Observation |
|---|---|---|
| Charging Temperature Test | 0°C to 45°C | All 3 sample units charged normally in the 0°C to 45°C environment. All functions normal. |
| Discharging — High Temperature | 74°C | All 3 sample units discharged and operated normally at 74°C. All functions normal. |
| Discharging — Low Temperature (Unit 1 & 2) | -20°C | 2 units reported E13 error at -20°C and could not operate. When temperature rose to -18°C, both units resumed normal operation. All functions normal at -18°C. |
| Discharging — Low Temperature (Unit 3) | -20°C | 1 unit discharged and operated normally at -20°C. All functions normal. |
Summary of Test Results: All 3 sample units charged normally in the required 0°C to 45°C temperature range. During discharging at -20°C, 2 of 3 units reported an E13 error and were unable to operate; both units resumed normal operation when the temperature rose to -18°C. The third unit operated normally at -20°C. All 3 units operated normally across the -18°C to 74°C range with all functions intact.
Conclusion
| Field | Detail |
|---|---|
| Result | For Reference Only (供参考) |
| Standard Applied | Internal Control Standard (内控标准) |
| Acceptance Criteria | No failure of function (功能无失效) |
| Charging Temperature Range | 0°C to 45°C — All 3 units PASS |
| Discharging at 74°C | All 3 units PASS |
| Discharging at -20°C | 2 of 3 units triggered E13 error (recovered at -18°C); 1 of 3 units PASS |
| Effective Operating Discharge Range | -18°C to 74°C for all units; -20°C for 1 of 3 units |
| Samples Tested | 3 PCS (S7) |
| Verdict | For Reference Only — functional limitation identified at -20°C for 2 of 3 units |
Document Information
| Role | Name (Pinyin) | Date |
|---|---|---|
| Tested By (测试/日期) | Li Guanghua | 2025-03-12 |
| Checked By (审核/日期) | Zhang Ronggui | 2025-03-12 |
| Approved By (核准/日期) | Mai Shaoqiang | 2025-03-12 |
| Form No. | BTK-R-Q142/AO | |
Frequently Asked Questions
What is the operating temperature range of the ETENWOLF S7 tire inflator?
The S7 operates normally across a discharge range of -18°C to 74°C. At -20°C, 2 of 3 tested units triggered an E13 error but recovered when the temperature rose to -18°C. One unit operated normally even at -20°C. For charging, the confirmed working range is 0°C to 45°C.
What does the E13 error code mean on the ETENWOLF S7?
During this test, the E13 error appeared on 2 of 3 S7 units when attempting to discharge (operate) at -20°C. The units were unable to run at that temperature but resumed normal function once the ambient temperature rose to -18°C, indicating E13 is likely a low-temperature protection fault.
Can the ETENWOLF S7 tire inflator be used in cold weather?
Based on this operating temperature test, the S7 reliably functions down to -18°C. One unit in the test also worked at -20°C, but this was not consistent across all samples. For reliable cold-weather use, operating above -18°C is recommended.
What test standard was used for the S7 operating temperature test?
The S7 operating temperature test was conducted against ETENWOLF’s internal control standard (内控标准), with an acceptance criterion of no failure of function. The test result is classified as For Reference Only and is not a formal pass/fail certification against an external standard.