Document Overview
Document Overview This article is based on the official user manual for the ETENWOLF S1 portable tire inflator, filename S1_manual_EN_20251220.pdf, revision v2.0, issued by ETENWOLF. The manual covers safe operation, inflation modes, LED lighting, battery charging, pressure calibration, and troubleshooting for all end users. It…
- Document type
- User Manual
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- Daniel Wright
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- User Manual
Document Overview
This article is based on the official user manual for the ETENWOLF S1 portable tire inflator, filename S1_manual_EN_20251220.pdf, revision v2.0, issued by ETENWOLF. The manual covers safe operation, inflation modes, LED lighting, battery charging, pressure calibration, and troubleshooting for all end users. It applies to the S1 tire pump sold globally under the ETENWOLF brand.
For product support, contact ETENWOLF at (+1) 866-720-9226 Monday–Friday 8 AM–5 PM PST, or email [email protected]. Register at etenwolf.com to receive a one-year extended warranty.
Product Information
The ETENWOLF S1 is a compact, rechargeable portable tire inflator designed for car tires, bicycle tires, balls, and general inflation needs. The unit ships with the following accessories:
- 1 × Tire pump (S1 unit)
- 1 × Air chuck
- 1 × Nozzle adapter set (ATO)
- 1 × USB Type-C charging cable
- 1 × User manual
Key hardware features include:
- Digital display showing target pressure value and actual real-time pressure value
- Progress bar and four-segment battery level indicator
- LED light with three modes: High Beam, Flashing, and SOS Signal
- Built-in Type-C charging port
- Retractable high-pressure hose stored in the rear of the unit
- Safety warning icon display for abnormal pressure or motor events
Control buttons on the S1:
- Start/Pause Power Button — long press 0.5 s to power on; long press 2 s to power off; short press to start or pause inflation
- Light Button — short press to cycle LED modes
- Mode Button — short press to cycle inflation modes; long press to switch pressure units
- Pressure Increase (+) Button — raises the target pressure value
- Pressure Decrease (−) Button — lowers the target pressure value
Key Details
Quick Start Steps
- Pull the high-pressure hose from the back of the unit.
- Screw the hose nozzle clockwise onto the valve of the object to be inflated.
- Long press the power button for 0.5 seconds to turn on the device.
- Short press the Mode button to select the desired mode: Manual, Car, Bicycle, or Ball.
- Long press the Mode button to switch the pressure unit among PSI, KPA, and Bar.
- Press the + or − button to set the target pressure value.
- Short press the power button to begin inflation.
- The pump stops automatically when the preset value is reached.
Inflation Mode Pressure Ranges
| Mode | Adjustable Pressure Range |
|---|---|
| Manual Mode | 3.0 – 160.0 PSI |
| Car Mode | 8.0 – 130.0 PSI |
| Bicycle Mode | 110.0 – 145.0 PSI |
| Ball Mode | 3.0 – 16.0 PSI |
Battery Level Indicator
| Display | Charge Level |
|---|---|
| 1 bar flashing | 0 – 25% |
| 2 bars | 25% – 50% |
| 3 bars | 50% – 75% |
| 4 bars | 75% – 100% |
When battery drops below 10%, the indicator flashes as a low-battery warning.
Memory Pressure Setting
The ETENWOLF S1 remembers the last target pressure value and unit selection each time they are adjusted. This allows users to resume inflation at their preferred setting without re-entering values on every use.
Automatic Shut-Off Conditions
- Charging cable disconnected during charging
- Battery fully depleted
- 5 minutes after reaching a full charge
- 3 minutes after entering standby
- Inflation exceeds 5 minutes and actual pressure remains below 5 PSI or above 150 PSI
Pressure Calibration for High-Altitude Use
At altitudes above 5,000 ft (1,524 m), pressure variation of 1–3 PSI may occur. To recalibrate:
- Power on the device.
- Disconnect the high-pressure hose from any object.
- Press and hold the Light button and the Mode button simultaneously for 10 seconds.
- The screen will restart, confirming successful recalibration.
Important notes: Calibration resets to sea-level (0 ft/m) each time the unit is powered off. At altitudes above 5,000 ft, manual recalibration is required every time the pump is turned on. The hose must not be attached to anything during calibration.
Troubleshooting Reference
| Problem / Error Code | Cause | Solution |
|---|---|---|
| Inflation speed is slow | Damaged hose or low battery | Inspect the hose for damage; ensure the battery is sufficiently charged. |
| Pump on but not inflating | Object pressure exceeds preset value | Check that the object’s current pressure is below the preset target. |
| Battery indicator absent after charging | Incompatible charger or cable | Use a certified PD charger and cable, then retry. |
| Pump stops due to temperature | Operating outside temperature range | Charging: 0°C–45°C (32°F–113°F). Inflation/deflation: −20°C–74°C (−4°F–165°F). |
| Safety warning icon active | Abnormal pressure or motor response | Power off, wait 10 minutes, then restart. |
| Display shows zero pressure during inflation | Air pressure below 3 PSI minimum detection range | Normal behavior below 3 PSI; no action required. |
| Battery indicator differs during inflation vs. standby | Normal lithium voltage sag under load | This is normal; no action required. |
| Error Code E08 | Persistent safety warning | Power off and restart. If unresolved, send device to factory for repair. |
| Error Code E10 | Motor fault warning | Motor stops; flashes for 30 seconds then attempts recovery. If issue persists after restart, send for repair. |
| Error Code E11 | Low-temperature charging protection | Temperature too low for charging. Restore ambient temperature to above 0°C before charging. |
| Error Code E12 | High-temperature charging protection | Temperature too high during charging. Allow device to cool before continuing. |
Standards & Compliance
The ETENWOLF S1 user manual includes the following safety and compliance guidance relevant to the product’s design and operation:
- Electrical safety: The manual instructs users to read all safety warnings before use to reduce the risk of electric shock, fire, and serious injury, consistent with general consumer electrical product safety requirements.
- Battery safety: The built-in lithium battery requires a certified IEC-compatible PD charger and cable. Charging temperature limits (0°C–45°C) and discharge temperature limits (−20°C–74°C) are specified to ensure safe operation within defined thermal boundaries.
- Overinflation protection: Automatic shut-off when actual pressure exceeds 150 PSI or falls below 5 PSI after 5 minutes of continuous inflation provides a hardware-level safety guard.
- RoHS compliance: As an ETENWOLF branded product distributed in international markets, the S1 is designed in accordance with RoHS restricted substances guidelines.
- CE marking: Products sold in the European market carry CE marking indicating conformity with applicable EU directives.
Users are advised to always verify the target pressure value before starting inflation. Incorrect settings may cause overinflation and tire rupture.
Validity & Certification Body
This user manual, version 2.0, is dated December 20, 2025 (as indicated by the filename S1_manual_EN_20251220.pdf). It is the current authoritative operating document for the ETENWOLF S1 tire inflator.
The document is issued directly by ETENWOLF, a global inflation tools and lighting gear brand. There is no third-party certification body associated with this user manual document. Product certifications (such as CE, FCC, RoHS, or UN38.3 for the lithium battery) are covered under separate certification reports and are not part of this manual.
For warranty registration and to ensure you are using the most current version of this manual, visit etenwolf.com. The standard product warranty is supported by a one-year extended warranty available upon registration.
ETENWOLF customer support is available Monday through Friday, 8 AM to 5 PM PST, at (+1) 866-720-9226 or [email protected].
Frequently Asked Questions
- Q: Can I use the ETENWOLF S1 while it is charging?
- No. The S1 cannot be used during charging. Always fully charge the unit before use. Charging from 0% to 100% takes approximately 2–3 hours using a certified PD charger and cable.
- Q: Why does the S1 display show zero pressure even though I have started inflation?
- The S1’s pressure sensor has a minimum detection range of 3 PSI. If the actual air pressure in the object is below 3 PSI, the display will show zero. This is normal behavior. Inflation is still occurring; the reading will appear once pressure rises above the detection threshold.
- Q: How do I recalibrate the S1 when using it at high altitude?
- Power on the unit and ensure the high-pressure hose is not connected to any object. Press and hold the Light button and the Mode button simultaneously for 10 seconds until the screen restarts. Note that calibration resets to sea level each time the unit is powered off, so recalibration is needed every time the pump is turned on at altitudes above 5,000 ft (1,524 m).
- Q: What should I do if the S1 displays error code E10?
- Error code E10 indicates a motor fault. The motor will stop and the display will flash for approximately 30 seconds before attempting automatic recovery. If the problem persists after restarting the device, contact ETENWOLF support or send the unit to the factory for repair.
Related Documents
The following certification and compliance documents are relevant to the ETENWOLF S1 portable tire inflator and may be available upon request from ETENWOLF:
- CE Declaration of Conformity — confirms conformity with applicable EU directives for products sold in the European Economic Area, issued under CE marking requirements.
- FCC ID Certification — required for electronic devices sold in the United States market; confirms radio frequency compliance with FCC regulations.
- UN38.3 Battery Test Report — mandatory for products containing lithium-ion batteries for international shipping; confirms the built-in battery meets UN38.3 transport safety requirements.
- RoHS Compliance Certificate — confirms restriction of hazardous substances in the product in accordance with RoHS directive requirements.
- REACH SVHC Declaration — confirms compliance with REACH regulations regarding substances of very high concern.
- KC Certification — required for products sold in South Korea; confirms conformity with KC safety standards.
- Product Safety Data Sheet (SDS) — covers lithium battery safety handling, storage, and disposal guidance.
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