Document Overview
Key Findings The ETENWOLF S4 SUP electric pump successfully passed the drop ball impact test at a 50 cm drop height, with the display panel showing no appearance defects or functional failures after impact. Test Type: Drop Ball Impact (落球冲击) Impact Height: 50 cm Ball…
- Document type
- Test Report
- Prepared by
- Daniel Wright
- Published
- Last reviewed
- Topics
- Mechanical Reliability
Key Findings
The ETENWOLF S4 SUP electric pump successfully passed the drop ball impact test at a 50 cm drop height, with the display panel showing no appearance defects or functional failures after impact.
- Test Type: Drop Ball Impact (落球冲击)
- Impact Height: 50 cm
- Ball Weight: 300 g
- Impact Count: 1 strike to the display panel
- Samples Tested: 2 PCS
- Test Date: 2025-08-18
- Verdict: Pass
Test Overview
| Field | Details |
|---|---|
| Test Type | Drop Ball Impact Test |
| Report No. | 2025081801 |
| Test Date | 2025-08-18 |
| Product Name | S4 SUP Electric Inflation Pump (S4-浆板充气泵) |
| Manufacturer | BESTEK ELECTRONICS CO., LTD |
| Sample Quantity | 2 PCS |
| Test Reason | Engineering Change (工程变更) — Comparison of injection-molded housing between new and old materials |
| Test Objective | Compare drop ball impact performance of the injection-molded enclosure using new vs. old material |
Test Equipment & Setup
| Parameter | Value |
|---|---|
| Test Equipment | Drop Ball Impact Tester (落球冲击试验机) |
| Impact Height | 50 cm |
| Ball Weight | 300 g |
| Number of Impacts | 1 (targeted at the display panel) |
| Sample Weight | Not recorded (/) |
| Laboratory Temperature | 26 °C |
| Laboratory Humidity | 68% RH |
Test Procedure
- Pre-Test: Record the laboratory ambient conditions (temperature and humidity). Confirm the drop ball impact tester is calibrated and the ball weight is 300 g.
- Sample Preparation: Position the S4 SUP pump unit on the test platform with the display panel face up, aligned per the test setup configuration.
- Impact Execution: Release the 300 g steel ball from a height of 50 cm, directing the impact to the display panel area — 1 impact per sample.
- Post-Test Inspection: Visually inspect the display panel and housing for cracks, deformation, or surface damage. Power on the unit and verify full functional operation (inflation, display readout, button response).
- Acceptance Criteria: No appearance defects and no functional failure after the specified impact. Both samples must pass to record an overall Pass verdict.
Test Data & Results
| Item | Specification | Actual Condition | Result |
|---|---|---|---|
| Impact Height | 50 cm | 50 cm | — |
| Ball Weight | 300 g | 300 g | — |
| Impact Count (Display Panel) | 1 | 1 | — |
| Sample Quantity | 2 PCS | 2 PCS | — |
| Appearance After Impact | No abnormality | No abnormality observed | Pass |
| Functional Status After Impact | No failure | No functional failure | Pass |
| Laboratory Temperature | — | 26 °C | — |
| Laboratory Humidity | — | 68% RH | — |
Observations: Following one drop ball impact at 50 cm onto the display panel of both S4 SUP pump samples, no cracks, deformation, or surface damage were detected on the housing or screen. All device functions operated normally post-impact, confirming that the new injection-molded housing material performs at least equivalently to the previous material under this impact condition.
Conclusion
| Field | Details |
|---|---|
| Test Standard | Internal drop ball impact procedure (50 cm, 300 g) |
| Test Conditions | 26 °C, 68% RH; 1 impact to display panel per sample |
| Samples Tested | 2 PCS — S4 SUP Electric Inflation Pump |
| Result | Appearance normal; no functional failure after impact |
| Overall Verdict | Pass (合格) |
Document Information
| Role | Name (Pinyin) |
|---|---|
| Approval (核准) | Mai Shaoqiang |
| Review (核查) | Zhang Ronggui |
| Tester (测试) | Li Guanghua |
| Form Number (表单编号) | BTK-R-Q142/AO |
Frequently Asked Questions
What does the ETENWOLF S4 drop ball impact test measure?
The test evaluates the mechanical durability of the S4 SUP pump’s injection-molded housing and display panel when struck by a 300 g steel ball dropped from 50 cm. It checks for appearance defects and functional failures after impact, simulating real-world accidental knocks during use or transport.
Why was this impact test performed — what triggered it?
The test was triggered by an engineering change: the injection-molded plastic housing material was updated. This comparative test verified that the new material performs at least as well as the old material under the same 50 cm drop ball impact condition.
Did the ETENWOLF S4 SUP pump pass the drop ball impact test?
Yes. Both tested samples passed. After one 300 g ball impact to the display panel from 50 cm, neither sample showed any appearance damage or functional failure. The overall verdict is Pass (合格).
What are the test conditions for the S4 SUP pump impact test?
The test was conducted at 26 °C and 68% RH. A 300 g steel ball was dropped from 50 cm onto the display panel area of the pump — one impact per sample — using a calibrated drop ball impact tester.
Related Products
- ETENWOLF S4 20 PSI Electric SUP Pump — the product under test in this report
- ETENWOLF Inflation Tools Product Range — full lineup of electric pumps and inflators