Introduction
This manual provides essential information for the safe and efficient operation of your Voltcraft VC-C909 Powerbank. Please read it thoroughly before use and retain it for future reference.
Safety Instructions
- Do not expose the power bank to extreme temperatures, direct sunlight, or fire.
- Do not immerse the power bank in water or other liquids.
- Do not disassemble, modify, or attempt to repair the device.
- Keep out of reach of children.
- Use only approved charging cables and adapters.
- Avoid dropping or subjecting the power bank to strong impacts.
- Dispose of the product responsibly according to local regulations.
Package Contents
- Voltcraft VC-C909 Powerbank
- USB-C to USB-C Charging Cable
- User Manual (this document)
Product Overview
Familiarize yourself with the components of your Voltcraft VC-C909 Powerbank.

Figure 1: Main view of the Voltcraft VC-C909 Powerbank, showcasing its sleek, dark grey design and the display panel on one end.

Figure 2: Close-up of the power bank's digital LCD display and port area, showing the ON/OFF button, A1:OUT (USB-A), C1:IN/OUT (USB-C), and C2:OUT (USB-C) ports.
Components
- Digital LCD Display: Shows battery percentage, input/output power (W), voltage (V), current (A), temperature, and remaining time.
- ON/OFF Button: Activates the display and initiates charging.
- USB-A Output Port (A1:OUT): For charging devices via USB-A cable.
- USB-C Input/Output Port (C1:IN/OUT): For charging the power bank or charging devices via USB-C cable, supporting Power Delivery (PD 3.1).
- USB-C Output Port (C2:OUT): For charging devices via USB-C cable.

Figure 3: Side view of the Voltcraft VC-C909 Powerbank, highlighting its compact and rectangular form factor.

Figure 4: The Voltcraft VC-C909 Powerbank shown alongside its included USB-C charging cable.
Setup
Initial Charging
- Before first use, fully charge the power bank.
- Connect the included USB-C cable to the C1:IN/OUT port of the power bank.
- Connect the other end of the USB-C cable to a compatible USB power adapter (not included) with Power Delivery (PD) support for fastest charging.
- The LCD display will show the charging status and battery percentage. Charging is complete when the display shows 100%.
Operating Instructions
Charging Your Devices
- Connect your device's charging cable to the appropriate output port on the power bank (USB-A or USB-C).
- Connect the other end of the cable to your device.
- Press the ON/OFF button to activate the power bank and begin charging.
- The display will show the output power, voltage, and current for each active port.
Checking Battery Status
Briefly press the ON/OFF button to activate the display and view the current battery percentage and other relevant information.
Maintenance
Cleaning
Wipe the power bank with a soft, dry cloth. Do not use liquid cleaners or abrasive materials.
Storage
Store the power bank in a cool, dry place away from direct sunlight and extreme temperatures. For long-term storage, it is recommended to charge the power bank to approximately 50-70% every three months to preserve battery life.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Power bank not charging | Cable not connected properly / Power adapter not working / Power bank fully charged | Reconnect cable securely / Try a different adapter / Check display for 100% |
| Device not charging | Power bank battery low / Cable faulty / Device not compatible / Power bank not activated | Recharge power bank / Try a different cable / Ensure device is compatible / Press ON/OFF button |
| Display not turning on | Power bank battery empty / Display timeout | Recharge power bank / Press ON/OFF button |
Specifications
| Feature | Detail |
|---|---|
| Model | VC-C909 (VC-16003645) |
| Capacity | 27,000 mAh |
| Fast Charging | PD 3.1, 140 W |
| Output Ports | 2 x USB-C, 1 x USB-A |
| Display | Digital LCD |
| Dimensions | 16.54 x 5.5 x 5 cm |
| Weight | 730 grams |
| Battery Type | Lithium-Ion |
| Protection | Short-circuit, Overcharge |
Warranty and Support
Voltcraft products come with a minimum 2-year warranty from the date of purchase.
For technical support, warranty claims, or further assistance, please contact Voltcraft customer service or visit the official Voltcraft website.
Manufacturer: VOLTCRAFT
ASIN: B0DMDLBBJ4
Model Number: VC-16003645





