ETENWOLF P200 Electric Ball Pump Inflation Accuracy Test Report — Sample 3# (P200精度-3#)

Document Overview

Key Findings The ETENWOLF P200 Electric Ball Pump (Sample 3#) demonstrated consistent inflation accuracy across all four ball types tested, with all measured stop pressures falling within ±0.4 PSI of the preset target — confirming reliable pressure control across the full operating range. Test Date:…

Document type

Test Report

Prepared by

Jessica Lin

Published

July 21, 2026

Last reviewed

July 21, 2026

Topics

Motor Performance

Key Findings

The ETENWOLF P200 Electric Ball Pump (Sample 3#) demonstrated consistent inflation accuracy across all four ball types tested, with all measured stop pressures falling within ±0.4 PSI of the preset target — confirming reliable pressure control across the full operating range.

• Test Date: 2025-03-19
• Sample ID: P200-3#
• Ball Types Tested: Basketball (篮球), Rugby/Football (橄榄球), Soccer Ball (足球), Volleyball (排球)
• Pressure Range Covered: 1 – 11 PSI
• Total Test Points: 22 inflation cycles across 4 ball categories
• Maximum Deviation Observed: −0.4 PSI (Basketball 2–4 PSI range; Soccer Ball 1–3 PSI range)
• Minimum Deviation Observed: 0.0 PSI (multiple test points)
• Overall Verdict: PASS — all readings within the ±0.5 PSI internal acceptance criterion

Test Overview

Test Equipment & Setup

Test Procedure

1. Pre-Test: Confirm the P200 unit is fully charged and functioning. Deflate the test ball to the specified starting pressure for each test segment using a reference gauge.
2. Preset Configuration: Set the target inflation pressure on the P200 to the specified preset value (e.g., 4 PSI, 6 PSI, 8 PSI, etc.) for the corresponding ball type and segment.
3. Inflation: Connect the appropriate needle adapter to the P200 and insert into the ball valve. Activate the pump and allow it to run until it auto-stops at the preset pressure.
4. Measurement: Immediately record the actual stop pressure displayed or measured at the moment of auto-stop.
5. Deviation Calculation: Calculate the difference value (accuracy): Difference = Stop Pressure − Preset Pressure. Record in the test log.
6. Repeat: Repeat steps 1–5 for each test segment across all four ball types, covering the full pressure range specified in the test matrix.
7. Post-Test: Inspect the pump and needle adapter for any signs of damage or leakage. Archive all raw readings.
8. Acceptance Criterion: All stop-pressure deviation values must fall within ±0.5 PSI of the preset target value to be considered a passing result.

Test Data & Results

The table below contains all 22 recorded inflation cycles from sheet P200精度-3#. Floating-point residuals from the raw Excel data (e.g., −0.0999999999999996) are rendered as −0.1 PSI, which is the mathematically correct rounded value.

Observations:

• All 27 recorded data points fall within the ±0.5 PSI acceptance window.
• The largest negative deviation (−0.4 PSI) occurred twice: Basketball segment 1–3 PSI and Soccer Ball segment 1–3 PSI. Both are still within tolerance.
• No positive overshoot (over-inflation) was recorded in any cycle; the pump consistently stopped at or slightly below the preset value.
• Row index “3.8” for the first Volleyball entry appears to be a data entry anomaly in the source Excel (likely the stop-pressure value was entered in the sequence column); the measurement data itself is valid and retained as-is.
• Test point sequence numbers 1, 10, 21, 28, and 29 are absent from this sheet, consistent with those points being recorded on sibling sheets P200精度-1# and P200精度-2#.

Conclusion

Document Information

Frequently Asked Questions

How accurate is the ETENWOLF P200 Electric Ball Pump at stopping at the preset pressure?

In sample 3# testing across 27 inflation cycles covering Basketball, Rugby/Football, Soccer Ball, and Volleyball from 1 to 11 PSI, the P200 stopped within −0.4 PSI to 0.0 PSI of every preset target. No over-inflation was recorded. All results passed the ±0.5 PSI acceptance criterion.

Does the P200 ever over-inflate a ball past the set pressure?

No over-inflation was observed in this test series. All 27 stop-pressure readings were at or below the preset target, with the pump undershooting by a maximum of 0.4 PSI at the lowest pressure settings (1–3 PSI range). This conservative behavior protects balls from burst risk.

What ball types can the ETENWOLF P200 inflate, and what pressure ranges does it support?

The P200 was tested with Basketball (up to 9 PSI), Rugby/Football (up to 11 PSI), Soccer Ball (up to 8 PSI), and Volleyball (up to 4 PSI) in this report. Combined with sibling test sheets P200精度-1# and P200精度-2#, the device covers the full sports ball pressure range its presets support.

Where can I find the complete P200 inflation accuracy test data across all three samples?

This article covers Sample 3# (P200精度-3#). The companion reports for Sample 1# and Sample 2# are available via the Related Products section below and share the same test methodology and acceptance criteria.

Related Products

• ETENWOLF P200 Electric Ball Pump — Product Page
• P200 Inflation Accuracy Test Report — Sample 1# (P200精度-1#)
• P200 Inflation Accuracy Test Report — Sample 2# (P200精度-2#)