1. Introduction
Thank you for choosing the INIU Compact Portable Charger P45. This device is designed to provide convenient and fast charging for your mobile devices on the go. Please read this manual carefully before use to ensure proper operation and to maximize the lifespan of your product.
2. Product Overview
The INIU P45 is a compact 5500mAh power bank featuring a built-in USB-C connector and 22.5W Power Delivery (PD) fast charging. It is designed for portability and efficiency.

Image: The INIU Compact Portable Charger P45, showcasing its compact design and digital display.
Key Features:
- Built-in USB-C Connector: Direct plug-in for compatible devices, eliminating the need for extra cables.
- 22.5W PD Fast Charging: Delivers rapid power to your devices.
- 5500mAh Capacity: Provides sufficient power for daily use.
- Compact and Lightweight: Designed for easy portability.
- Digital Display: Shows the remaining battery percentage.
- 15-Layer SmartProtect System: Advanced safety features to protect your devices.
- Pass-Through Charging: Charge the power bank and a device simultaneously.
3. Package Contents
Please check the package for the following items:
- INIU Compact Portable Charger P45
- USB-C to USB-C Charging Cable
- User Manual

Image: The INIU P45 power bank, a USB-C charging cable, and the user manual, as typically included in the product package.
4. Setup
Initial Charge:
- Before first use, fully charge your INIU P45 power bank.
- Connect the provided USB-C cable to the power bank's USB-C port and to a compatible USB wall charger (not included).
- The digital display will show the charging progress. The power bank is fully charged when the display shows 100%.

Image: The INIU P45 power bank being recharged via its USB-C port, showing the digital display indicating charge level.
5. Operating Instructions
Charging Your Device:
- Using the Built-in USB-C Connector: Extend the built-in USB-C connector from the power bank and plug it directly into your compatible device's USB-C port.
- Using the USB-C Port: Connect your device to the power bank's USB-C port using a compatible USB-C to USB-C cable (or USB-C to Lightning cable for Apple devices, sold separately).
- Your device should begin charging automatically. The power bank's digital display will show its remaining battery percentage.

Image: The INIU P45 power bank directly connected to a smartphone via its built-in USB-C connector, illustrating cable-free fast charging.
Charging Multiple Devices (Pass-Through Charging):
The INIU P45 supports charging two devices simultaneously. You can also recharge the power bank while it charges another device.
- Connect your primary device using the built-in USB-C connector.
- Connect a second device to the power bank's USB-C port using a compatible cable.
- To use pass-through charging, connect the power bank to a wall charger via its USB-C port while it is charging a device.

Image: Top panel shows the INIU P45 charging a phone via its built-in connector and a second device (earbuds) via its USB-C port. Bottom panel shows the power bank being recharged while simultaneously charging a phone (pass-through charging).
6. Safety Information
To ensure safe operation and prevent damage, please observe the following:
- Do not expose the power bank to extreme temperatures (above 45°C/113°F or below 0°C/32°F).
- Avoid dropping, disassembling, or attempting to repair the device yourself.
- Keep the power bank away from water, moisture, and flammable materials.
- Use only certified charging cables and adapters.
- Keep out of reach of children.
- The INIU P45 features a 15-Layer SmartProtect system to prevent overcharge, over-discharge, over-current, and short-circuiting.

Image: An internal view highlighting the '15-Layer SmartProtect' chip, representing the multi-layered safety features integrated into the power bank.
7. Maintenance
- Clean the power bank with a dry, soft cloth. Do not use harsh chemicals or abrasive materials.
- Store the power bank in a cool, dry place when not in use.
- If storing for an extended period, charge the power bank to approximately 50% every three months to maintain battery health.
8. Troubleshooting
| Issue | Possible Cause | Solution |
|---|---|---|
| Device not charging | Power bank battery is depleted. Incorrect cable/connection. Device incompatibility. | Recharge the power bank. Ensure cables are securely connected. Verify device compatibility. |
| Slow charging | Non-fast charging cable/adapter. Device not supporting fast charge. | Use a fast-charging compatible cable and adapter. Check device specifications for fast charge support. |
| Power bank not recharging | Charging cable or adapter faulty. Power bank port damaged. | Try a different USB-C cable and wall adapter. Contact customer support if issue persists. |
| Digital display not working | Minor software glitch. | Try fully discharging and then fully recharging the power bank. If the issue persists, contact support. |
9. Specifications
| Feature | Detail |
|---|---|
| Model Number | P45 |
| Battery Capacity | 5500 mAh |
| Output Power | 22.5W (Max) |
| Input Port | USB-C |
| Output Ports | Built-in USB-C Connector, USB-C Port |
| Product Dimensions | 1.5 x 3.1 x 1 inches (3.8 x 7.9 x 2.5 cm) |
| Item Weight | 4.9 ounces (139 grams) |
| Battery Type | Lithium Polymer |
10. Warranty and Support
INIU provides an industry-leading 3-year INIU Care warranty for this product. This warranty covers manufacturing defects and ensures reliable performance. For warranty claims or technical support, please contact INIU customer service through their official website or the retailer where the product was purchased.

Image: Multiple INIU P45 power banks in different colors, accompanied by a '3 Years INIU Care' badge, highlighting the product's warranty.