1. Einleitung
Thank you for choosing the FLEXTAILGEAR Mini Bike Tire Pump ACS. This portable electric pump is designed for efficient and precise inflation of various tires and balls, featuring an integrated digital gauge and a professional taillight for enhanced safety. Please read this manual thoroughly before use to ensure proper operation and maintenance.

Figure 1: FLEXTAILGEAR Mini Bike Tire Pump ACS overview.
2. Lieferumfang
Bitte vergewissern Sie sich beim Auspacken, dass alle folgenden Artikel vorhanden sind:
- FLEXTAILGEAR Mini Bike Tire Pump ACS
- Typ C Ladekabel
- Taillight Adapter (for mounting)
- Presta Ventiladapter
- Schrader-Ventiladapter
- Ball Needle Nozzle
- Bedienungsanleitung

Abbildung 2: Alle im Paket enthaltenen Komponenten.
3. Einrichtung
3.1 Aufladen des Geräts
Before first use, fully charge the pump using the provided Type-C cable. Connect the cable to the Type-C port on the pump and a compatible USB power source. The battery indicator on the display will show charging progress.
3.2 Attaching the Taillight Adapter
The pump can be mounted to your bike's seat post using the included taillight adapter. Secure the adapter to the seat post, then slide the pump onto the adapter until it clicks into place. This allows the pump to function as a rear safety light during rides.
Figure 3: Pump mounted as a taillight.
4. Bedienungsanleitung
4.1 Ein-/Ausschalten
To power on the pump, long press the power button. The digital display will activate. To power off, long press the power button again.
4.2 Einstellen des Zieldrucks
Once powered on, use the '+' and '-' buttons to adjust the desired PSI (Pounds per Square Inch) on the digital display. The pump features an auto-shutoff function that will stop inflation once the set pressure is reached.
4.3 Inflation Procedures
The pump supports Schrader, Presta, and ball valves. Ensure the correct adapter is installed for your specific item.
4.3.1 Schrader Valve Inflation
- Install the Schrader valve adapter onto the pump's inflation port.
- Firmly press the pump onto the Schrader valve stem of the tire.
- Press the power button to begin inflation. The pump will automatically stop when the set PSI is reached.
Video 1: Installation guide for Schrader valve on the FLEXTAILGEAR Bike Tire Pump. This video demonstrates how to correctly attach the Schrader valve adapter and connect it to a tire for inflation.
4.3.2 Presta Valve Inflation
- Install the Presta valve adapter onto the pump's inflation port.
- Unscrew the Presta valve cap on your tire and slightly open the valve.
- Firmly press the pump onto the Presta valve stem.
- Press the power button to begin inflation. The pump will automatically stop when the set PSI is reached.
4.3.3 Ball Inflation
- Insert the ball needle nozzle into the pump's inflation port.
- Insert the needle into the ball's inflation hole.
- Press the power button to begin inflation. The pump will automatically stop when the set PSI is reached.
4.4 Taillight Functionality
The integrated taillight offers three modes for visibility and safety:
- Dauermodus: Sorgt für kontinuierliche Beleuchtung.
- Durchflussmodus: Offers a dynamic, flowing light pattern.
- Blitzmodus: Emits a flashing light for maximum attention.
To activate the taillight, long press the light button. Short press the light button to cycle through the modes. Long press again to turn off the taillight.
Video 2: Demonstration of the FLEXTAILGEAR Bike Tire Pump with Gauge & Taillight. This video showcases the pump's digital display, inflation process, and the various modes of the integrated taillight.
5. Hauptmerkmale
- Precision Pressure Control: Real-time tire pressure monitoring on a high-contrast digital display. Automatic shut-off at the target PSI (±1 PSI) prevents over or under-inflation.
- Integriertes Rücklicht: Unique built-in taillight with steady, flowing, and flashing modes for improved visibility and safety during night or low-light conditions. Includes a seat-mount bracket.
- Ultra-portables Design: Weighs only 4.4 oz (125g), making it easy to carry without bulk.
- Langlebige Konstruktion: Engineered to withstand 1.2m drops, features IPX4 water resistance, and operates in temperatures from 5°F to 122°F (-15°C to 50°C).
- Hochdruckausgang: Delivers up to 120 PSI with ±1 PSI precision. Can inflate a 700 x 23C tire (65-100 PSI) in approximately 30 seconds.
- Universelle Kompatibilität: Effortlessly switches between Presta and Schrader valves. Includes a needle nozzle for inflating sports balls.

Figure 4: Digital display and controls.

Figure 5: Compact size for easy portability.
6. Leistungsdaten
Typical inflation times and capacities for various items:
| Reifentyp | Druckbereich | Aufpumpzeit | Quantity (per charge) |
|---|---|---|---|
| 700 x 23C | 65 - 100 PSI | 30 Sekunden | 14 |
| 700 x 23C | 0 - 100 PSI | 75 Sekunden | 3 |
| 700 x 23C | 0 - 120 PSI | 130 Sekunden | 2 |
| 29 x 2.6 | 0 - 40 PSI | 140 Sekunden | 2 |
| 140 / 70 R17 | 29 - 33 PSI | 80 Sekunden | 4 |
| Basketball | 0 - 8 PSI | 22 Sekunden | 15 |

Figure 6: Performance data for different inflation scenarios.
7. Wartung
- Reinigung: Wipe the pump with a soft, damp Tuch. Verwenden Sie keine scharfen Chemikalien oder Scheuermittel.
- Lagerung: Lagern Sie die Pumpe an einem kühlen, trockenen Ort, geschützt vor direkter Sonneneinstrahlung und extremen Temperaturen.
- Batteriepflege: Für eine optimale Akkulaufzeit laden Sie die Pumpe regelmäßig auf, auch wenn sie nicht häufig benutzt wird. Vermeiden Sie es, den Akku über längere Zeiträume vollständig zu entladen.
- Düsenpflege: Ensure all nozzles and adapters are clean and free of debris before and after use to maintain proper sealing and prevent damage.
8. Fehlerbehebung
- Pumpe schaltet sich nicht ein: Ensure the battery is charged. If fully charged, try a long press on the power button.
- Slow inflation or insufficient pressure: Check that the valve adapter is firmly attached to both the pump and the tire valve. Ensure the tire valve is fully open (for Presta valves).
- Die Pumpe wird während des Gebrauchs heiß: This is normal during extended inflation. Allow the pump to cool down before continued use.
- Ungenaue Druckmessung: Ensure the pump is securely connected to the valve. If issues persist, contact customer support.
9. Spezifikationen
- Marke: FLEXHECKZAHNRAD
- Modellname: ACS
- Farbe: Schwarz
- Material: Plastik
- Artikelgewicht: 0.23 Kilograms (approximately 4.4 oz / 125g)
- Energiequelle: Batteriebetrieben (Lithium-Ionen)
- Maximaler Druck: 120 PSI (Pfund pro Quadratzoll)
- Wasserbeständigkeit: IPX4
- Betriebstemperatur: 5°F bis 122°F (-15°C bis 50°C)
- Enthaltene Komponenten: Pump, Gauge, Presta Valve Adapter, Schrader Valve Adapter, Ball Needle Nozzle
10. Garantie und Support
This product comes with a 1-year warranty from the date of purchase. For warranty claims, technical support, or any inquiries, please contact FLEXTAILGEAR customer service through the retailer where the product was purchased or visit the official FLEXTAILGEAR webWebsite für Kontaktinformationen.





