1. Introduction
Thank you for choosing the WeeFancy Mini Portable Charger VT103C. This compact and powerful 10000mAh power bank is designed for convenient on-the-go charging, featuring built-in Lightning and USB-C cables, 22.5W fast charging capabilities, and a smart LED display. This manual provides essential information for safe and efficient use of your device.
2. Product Overview
The WeeFancy Mini Portable Charger VT103C is an ultra-compact power bank with integrated charging solutions. It is designed to be lightweight and slim, making it an ideal travel companion.
2.1 Key Features
- Ultra-Compact Design: Measures 4.2 x 2.7 x 0.6 inches (10.6 x 6.86 x 1.6 cm) and weighs only 0.36 lb (165 g), fitting easily into pockets or bags. TSA-approved for air travel.
- Built-in Multiple Cables: Includes integrated Lightning (iOS) and USB-C cords for direct charging of various devices, eliminating the need for extra cables.
- 22.5W Super Fast Charging: Equipped with PD 3.0 & QC 3.0 technology, capable of charging compatible devices up to 3 times faster than standard chargers.
- Dual Recharging Modes & Smart LED Display: Recharge the power bank via its built-in USB-C cable or dedicated USB-C/Lightning input ports. The LED indicator shows the exact battery percentage.
- Absolute Safety: Features a 9-layer safety system with FCC, CE, and RoHS certifications, providing protection against overcurrent, overvoltage, overheating, and overcharging.

Image: The WeeFancy Mini Portable Charger VT103C, highlighting its compact and slim design with a digital battery display.

Image: The power bank showcasing its integrated Lightning and USB-C charging cables.
3. Package Contents
Please check the package for the following items:
- WeeFancy Mini Portable Charger VT103C (with built-in Lightning and USB-C cables)
- User Manual
4. Getting Started
4.1 Initial Charge of the Power Bank
Before first use, fully charge your WeeFancy Mini Portable Charger. The LED display will show the charging progress.
- Using Built-in USB-C Cable: Connect the built-in USB-C cable to a USB power adapter (not included).
- Using USB-C Input Port: Connect a USB-C cable (not included) to the power bank's USB-C input port and a USB power adapter.
- Using Lightning Input Port: Connect a Lightning cable (not included) to the power bank's Lightning input port and a USB power adapter.
A full recharge typically takes approximately 3 hours (with a 5V/3A adapter).

Image: Illustration of the three input charging methods for the power bank.
4.2 Charging Your Devices
The power bank can charge multiple devices simultaneously using its built-in cables and additional output ports.
- Using Built-in Lightning Cable: Connect the built-in Lightning cable directly to your iOS device (e.g., iPhone 17/16/15/14).
- Using Built-in USB-C Cable: Connect the built-in USB-C cable directly to your USB-C device (e.g., Samsung Galaxy S25/S24, Google Pixel, iPad).
- Using USB-A Output Port: Use your own USB-A to device cable to connect to the USB-A output port.
- Using USB-C Output Port: Use your own USB-C to device cable to connect to the USB-C output port.
The smart LED display will show the remaining battery percentage of the power bank. Fast charging is supported for compatible devices when using appropriate cables and ports. Note: Fast charging may not be supported when charging 4 devices simultaneously.

Image: The power bank demonstrating its capability to charge up to four devices concurrently.
4.3 Pass-Through Charging
The portable charger supports pass-through charging, allowing you to charge both your devices and the power bank itself simultaneously when the power bank is connected to a power source.

Image: A detailed view of the power bank's various ports and built-in cables.
5. Safety Information
Please read and follow these safety guidelines to prevent damage to the device or injury.
- Do not expose the power bank to extreme temperatures (above 45°C/113°F or below 0°C/32°F).
- Avoid dropping, hitting, or disassembling the device.
- Keep away from water, moisture, and flammable materials.
- Do not use if the device is damaged, swollen, or leaking.
- Use only certified charging cables and adapters.
- Keep out of reach of children.
- Dispose of the power bank responsibly according to local regulations.

Image: Visual representation of the power bank's comprehensive safety protections.
6. Maintenance and Care
- Clean the power bank with a dry, soft cloth. Do not use harsh chemicals or abrasive materials.
- Store the device in a cool, dry place when not in use.
- To maintain battery health, fully charge and discharge the power bank at least once every three months if stored for extended periods.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Power bank not charging | Charging cable or adapter faulty; power bank fully charged; input port issue. | Try a different cable/adapter. Ensure the power bank is not already at 100%. Try a different input port. |
| Device not charging from power bank | Power bank battery low; cable faulty; device incompatible; connection issue. | Recharge the power bank. Try a different cable. Ensure your device is compatible. Check for secure connection. |
| Slow charging | Non-fast charging cable/adapter; multiple devices charging; device not supporting fast charge. | Use a fast-charging compatible cable/adapter. Charge fewer devices. Ensure your device supports fast charging. |
| Power bank gets warm during use | Normal operation during charging/discharging; high load. | A slight warmth is normal. If it becomes excessively hot, disconnect immediately and contact support. |
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | VT103C |
| Battery Capacity | 10000mAh |
| Product Dimensions | 4.2 x 2.7 x 0.6 inches (10.6 x 6.86 x 1.6 cm) |
| Item Weight | 5.8 ounces (165 g) |
| Input (USB-C) | 5V/3A, 9V/2A, 12V/1.5A |
| Input (Lightning) | 5V/2A |
| Output (USB-C) | 5V/3A, 9V/2.22A, 12V/1.67A (20W Max) |
| Output (Lightning) | 5V/2.4A, 9V/2.22A (20W Max) |
| Output (USB-A) | 5V/3A, 9V/2A, 12V/1.5A (18W Max) |
| Total Output | 22.5W Max |
| Special Features | Built-in Cables, Fast Charging, Lightweight, Pocket Size, Smart LED Display |
| Certifications | FCC, CE, RoHS |
9. Warranty and Support
WeeFancy products are designed for reliability and performance. For warranty information and customer support, please refer to the warranty card included with your product or visit the official WeeFancy website. If you encounter any issues or have questions, please contact our customer service team for assistance.
