1. Introducció
Thank you for choosing the Voltcraft VC-CJS77 4-in-1 Jump Starter. This versatile device combines a powerful jump starter for vehicles, an air compressor for tires, a bright LED work light, and a portable power bank for charging electronic devices. This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your device. Please read it thoroughly before first use and keep it for future reference.
2. Instruccions de seguretat
Observeu sempre les següents precaucions de seguretat per evitar lesions o danys al dispositiu i al vehicle:
- Llegiu atentament totes les instruccions abans d'utilitzar.
- Wear eye protection and protective gloves when operating the jump starter.
- Ensure adequate ventilation when jump-starting a vehicle.
- Do not smoke or allow sparks or flames near the battery or jump starter.
- Connecteu el clamps to the correct polarity: VERMELL clamp to the positive (+) terminal, NEGRE clamp to the negative (-) terminal or vehicle chassis.
- No permeteu el cl vermell i negreamps tocar-se.
- Mantingueu el dispositiu lluny dels nens.
- No exposeu el dispositiu a la pluja ni a temperatures extremes.
- Si el dispositiu s'escalfa excessivament durant l'ús, interrompeu-ne el funcionament immediatament.
- No intenteu arrencar amb ajuda d'una bateria congelada.
- Desconnecteu el clamps de la bateria del vehicle en els 30 segons posteriors a l'arrencada del vehicle.
3. Contingut del paquet
Verifiqueu que tots els elements siguin presents al paquet:
- Voltcraft VC-CJS77 4-in-1 Jump Starter Unit
- Jump Starter Cables with Polar Clamps
- Air Hose for Compressor
- 3 Valve Adapters (for various inflatables)
- Cable USB-C a USB-C (45 cm)
- USB-A to USB-C Cable (45 cm)
- Bossa d'emmagatzematge
- Manual d'usuari
4. Producte acabatview
Familiarize yourself with the components of your Voltcraft VC-CJS77 unit.

Figura 4.1: Davant view of the Voltcraft VC-CJS77 unit, displaying the digital screen with battery percentage, input/output indicators, and control buttons.

Figura 4.2: lateral view of the Voltcraft VC-CJS77, highlighting the various input and output ports for charging and power delivery, including USB-A and USB-C, and the dedicated jump starter port.
Components clau:
- Pantalla digital: Shows battery level, output status, and compressor pressure.
- Botó d'encesa: Encén/apaga la unitat.
- Botó BOOST: For emergency jump-starting when vehicle battery is extremely low.
- USB-A Output Ports (2x): Per carregar telèfons intel·ligents, tauletes i altres dispositius alimentats per USB.
- Port d'entrada/sortida USB-C: For charging the jump starter unit and also for charging other devices.
- Jump Starter Port: Connects to the jump starter cables.
- Port del compressor d'aire: Connects to the air hose for inflation.
- Llum de treball LED: Proporciona il·luminació amb múltiples modes.
5. Configuració i càrrega inicial
Before using your Voltcraft VC-CJS77 for the first time, it is recommended to fully charge the unit.
5.1 Charging the Jump Starter Unit
- Connect the supplied USB-C to USB-C cable or USB-A to USB-C cable to the USB-C Input/Output port on the jump starter.
- Connect the other end of the cable to a suitable USB wall adapter (not included) or a powered USB port.
- The digital display will show the charging progress. Charge until the display indicates 100%.
- Un cop estigui completament carregat, desconnecteu el cable de càrrega.
For optimal performance and battery longevity, recharge the unit every 3-6 months, even if not in use.
6. Operating the Jump Starter
The Voltcraft VC-CJS77 is designed to jump-start 12V vehicles with petrol engines up to 8.0 liters and diesel engines up to 6.0 liters.
6.1 Arrencada d'un vehicle amb ajuda d'un cable
- Ensure the jump starter unit is at least 75% charged.
- Apagueu el contacte del vehicle i tots els accessoris (llums, ràdio, etc.).
- Connect the blue end of the jump starter cables to the jump starter port on the VC-CJS77 unit.
- Connecteu el VERMELL positiu (+) clamp al terminal positiu (+) de la bateria del vehicle.
- Connecteu el NEGRE cl negatiu (-)amp al terminal negatiu (-) de la bateria del vehicle o a una peça metàl·lica sòlida i sense pintar del xassís del vehicle, allunyada de la bateria.
- Once connected, the jump starter's display may show a voltage reading. If the vehicle battery is extremely low, press the IMPULS button on the unit. Wait for the indicator to confirm it's ready.
- Engegueu el motor del vehicle. Si no arrenca immediatament, espereu 30 segons abans de tornar-ho a intentar. No feu girar el motor durant més de 3 segons per intent.
- Un cop arrencat el vehicle, desconnecteu immediatament NEGRE clamp primer, després el VERMELL clamp de la bateria del vehicle.
- Disconnect the jump starter cables from the VC-CJS77 unit.
Important: Do not leave the jump starter connected to the vehicle battery for more than 30 seconds after the engine starts.
7. Operating the Air Compressor
The integrated air compressor can inflate tires and other inflatables up to a maximum pressure of 11 bar (approximately 160 PSI).
7.1 Inflating Tires or Inflatables
- Connect the air hose to the air compressor port on the VC-CJS77 unit.
- Attach the appropriate valve adapter to the air hose, if necessary, and then to the item you wish to inflate.
- Turn on the jump starter unit. The display will show the current pressure.
- Use the '+' and '-' buttons to set the desired target pressure (PSI, BAR, KPA, kg/cm²).
- Press the compressor start button (usually indicated by a tire icon) to begin inflation.
- El compressor s'aturarà automàticament un cop s'assoleixi la pressió preestablerta.
- Disconnect the air hose from the item and the jump starter unit.
Nota: The compressor may become warm during extended use. Allow it to cool down if necessary.
8. Ús de la llum LED
The VC-CJS77 features a multi-mode LED work light for illumination in various situations.

Figura 8.1: The Voltcraft VC-CJS77 unit with its powerful LED flashlight activated, providing illumination.
8.1 Activating the LED Light
- Press and hold the LED light button (usually indicated by a light bulb icon) to turn on the light in its steady mode.
- Press the button again to cycle through the different modes: steady light, SOS signal, and strobe/flash.
- Press and hold the button again to turn off the LED light.
9. Ús com a bateria externa
The VC-CJS77 can also serve as a portable power bank to charge your electronic devices.
9.1 Càrrega de dispositius externs
- Connect your device's charging cable to one of the USB-A output ports or the USB-C input/output port on the jump starter.
- The jump starter will automatically begin charging your device. The display may show 'OUT' and the power output.
- Desconnecta el dispositiu un cop finalitzada la càrrega.
The unit supports PD65W fast charging via the USB-C port, allowing for quick charging of compatible devices.
10. Manteniment
Proper maintenance ensures the longevity and reliability of your Voltcraft VC-CJS77.
- Neteja: Netegeu la unitat amb un drap suau i sec. No utilitzeu productes químics agressius ni netejadors abrasius.
- Emmagatzematge: Guardeu la unitat en un lloc fresc i sec, allunyat de la llum solar directa i de temperatures extremes. Feu servir la bossa d'emmagatzematge proporcionada per protegir-la.
- Recàrrega: Recharge the unit every 3-6 months to maintain battery health, even if it has not been used.
- Cura del cable: Inspect jump starter cables and air hose for any damage before each use. Replace if frayed or damaged.
11. Solució De Problemes
If you encounter issues with your Voltcraft VC-CJS77, refer to the following common problems and solutions:
| Problema | Causa possible | Solució |
|---|---|---|
| El vehicle no arrenca després de l'arrencada auxiliar. | Càrrega baixa a l'arrencador de bateria; cl incorrecteamp connection; vehicle battery completely dead; vehicle issue. | Assegureu-vos que l'arrencador estigui completament carregat. Comproveu el clamp connections for correct polarity and secure contact. Try pressing the BOOST button. If still no start, the vehicle may have other mechanical issues. |
| El compressor d'aire no s'infla. | Air hose not securely connected; incorrect pressure setting; unit not powered on. | Check all connections. Ensure the unit is powered on and the target pressure is set correctly. |
| La unitat no s'està carregant. | Faulty charging cable; faulty wall adapter; USB-C port issue. | Try a different USB-C cable and/or wall adapter. Ensure the cable is fully inserted into the port. |
| La llum LED no funciona. | Unit not powered on; low battery. | Assegureu-vos que la unitat estigui engegada i que tingui prou càrrega. |
Si el problema persisteix després d'intentar aquestes solucions, poseu-vos en contacte amb l'atenció al client.
12. Especificacions
Technical specifications for the Voltcraft VC-CJS77 Jump Starter:
- Model: VC-CJS77 (Manufacturer Part Number: VC-16533725)
- Marca: VOLTCRAFT
- Capacitat de la bateria: 16000 mAh (12 V)
- Punt actual: 1200 A
- Compatibilitat del motor: Up to 8.0L Petrol, Up to 6.0L Diesel
- Entrada/sortida USB-C: PD65W Fast Charging
- Sortida USB-A: 2x ports
- Air Compressor Max Pressure: 11 bar (approx. 160 PSI)
- Funcions LED: Steady Light, SOS, Flash
- Dimensions (L x A x A): 23.5 x 6.7 x 11.5 cm
- Pes: 1.81 kg
13. Garantia i Suport
Your Voltcraft VC-CJS77 Jump Starter is covered by a manufacturer's warranty. Please refer to the warranty card included in your package for specific terms and conditions.
For technical support, service, or warranty claims, please contact your retailer or the official Voltcraft customer service. Contact information can typically be found on the Voltcraft weblloc web o a la documentació de la compra.