1. Introduction
Thank you for choosing the Xiaomi Ultra Slim Power Bank 5000mAh. This portable power bank is designed for convenient and fast charging of your electronic devices on the go. Featuring a slim design, built-in USB-C cable, and 22.5W MAX fast charging capabilities, it's an ideal companion for your mobile lifestyle. Please read this manual carefully before use to ensure optimal performance and safety.

2. Safety Information
To prevent injury to yourself and others, or damage to your device, please observe the following safety precautions:
- Do not disassemble, modify, or repair the device.
- Keep the device away from heat sources, direct sunlight, and extreme temperatures (operating temperature: 5°C - 35°C).
- Do not expose the device to water or other liquids.
- Avoid dropping or subjecting the device to strong impacts.
- Keep out of reach of children.
- Dispose of the device according to local regulations for electronic waste.
The power bank is equipped with multiple protection features:

- Temperature protection
- Short-circuit protection
- RESET protection
- Input overvoltage protection
- Input overcurrent protection
- Over current short circuit protection
- Output overvoltage protection
- Output overcurrent protection
- Battery overcharge and overdischarge protection

The built-in NTC sensor temperature control system measures the temperature approximately 240 times per minute to ensure safe operation.
3. Setup and Initial Use
3.1 Unpacking
Carefully remove the power bank from its packaging. Ensure all components are present and undamaged.
3.2 Initial Charging of the Power Bank
Before first use, it is recommended to fully charge your power bank. Connect the built-in USB-C cable to a compatible USB power adapter (not included) or a computer's USB-C port. The indicator lights on the power bank will show the charging status. Once fully charged, all indicator lights will remain solid.

4. Operating Instructions
4.1 Charging Your Devices
The Xiaomi Ultra Slim Power Bank features a convenient built-in USB-C cable for charging your devices. Simply detach the cable from its storage slot and connect it to your device's USB-C port. The power bank will automatically begin charging.

The power bank supports up to 22.5W MAX output for fast charging compatible devices.

It is compatible with a wide range of devices, including mobile phones, tablets, and Bluetooth headphones.
4.2 Checking Battery Level
Press the power button once to check the remaining battery level. The LED indicators will light up to show the current charge. Each light typically represents a percentage of the total charge.
5. Maintenance
- Cleaning: Use a soft, dry cloth to clean the exterior of the power bank. Do not use harsh chemicals or abrasive materials.
- Storage: Store the power bank in a cool, dry place away from direct sunlight and extreme temperatures. If storing for an extended period, charge the power bank to about 50% every three months to prolong battery life.
- Avoid Damage: Do not drop, puncture, or expose the power bank to excessive force.
6. Troubleshooting
- Power bank not charging:
- Ensure the charging cable is securely connected to both the power bank and the power source.
- Verify that the power adapter or USB port is functional.
- Try a different charging cable or power adapter.
- Device not charging from power bank:
- Ensure the built-in USB-C cable is securely connected to your device.
- Check if the power bank has sufficient charge.
- Verify that your device is compatible with USB-C charging.
- Slow charging:
- Ensure both the power bank and your device support fast charging protocols.
- Using a non-fast charging adapter to recharge the power bank will result in slower charging times.
- Environmental factors (e.g., extreme temperatures) can affect charging speed.
- Power bank automatically turns off:
- This may indicate low battery. Recharge the power bank.
- The power bank has built-in protection mechanisms (e.g., short-circuit, overcurrent) that may trigger a shutdown if an issue is detected. Disconnect all devices and restart.
7. Specifications
| Attribute | Specification |
|---|---|
| Model | PB0522S |
| Battery Type | Lithium Ion Battery |
| Rated Energy | 19.25Wh 3.85V 5000mAh |
| Rated Capacity | 3000mAh (5V/2.4A) |
| Input/Output Port | USB Type C |
| Product Size | 93 x 64.3 x 11.8mm |
| Input Parameters | 5V / 3A, 9V / 2.22A (20W MAX) |
| Output Parameters | 5V / 2.4A, 9V / 2.22A, 10V / 2.25A (22.5W MAX) |
| Operating Temperature | 5°C - 35°C |
| Shell Material | Plastic |
| Features | Built-in Cables, Two-way Quick Charge |
8. User Tips
- Portability: The ultra-slim design (approx. 11.8mm thin, 110g) makes it easy to carry in a pocket or small bag.
- Cable Management: The built-in cable doubles as a hand strap, offering convenience and preventing cable loss.
- Fast Charging: For optimal fast charging, ensure both your device and the wall adapter (when recharging the power bank) support the 22.5W MAX output and 20W MAX input respectively.

9. Warranty and Support
For warranty information and customer support, please refer to the documentation provided with your purchase or contact the seller/manufacturer directly. Keep your proof of purchase for any warranty claims.