1. Introduction
Thank you for choosing the Charmast Portable Charger. This device is designed to provide convenient and efficient power on the go, featuring built-in cables and a foldable wall plug for ultimate portability. With its 20000mAh capacity and fast charging capabilities, it ensures your devices stay powered throughout your day.

Figure 1: Charmast Portable Charger (Pink)
2. Package Contents
Please check the package for the following items:
- Charmast Portable Charger (Model: C2046S)
- Mesh Pouch
- User Manual (this document)

Figure 2: Package Contents
3. Product Features
- Built-in Cables: Includes integrated Lightning, USB-C, and Micro USB cables for universal compatibility.
- Foldable Wall Plug: Convenient AC wall plug for direct recharging from an outlet.
- High Capacity: 20000mAh battery provides multiple charges for smartphones and tablets.
- Fast Charging: Supports 20W Power Delivery (PD) and 18W Quick Charge (QC 3.0) for rapid device charging.
- Digital Display: LED screen shows the remaining battery percentage.
- Multiple Safety Protections: Built-in safeguards against over-discharge, short-circuit, over-current, and over-voltage.

Figure 3: Key Features Overview
4. Setup and Initial Use
4.1 Initial Charging of the Power Bank
Before first use, it is recommended to fully charge your Charmast Portable Charger. You have two primary options for recharging:
- Using the Built-in Wall Plug: Extend the foldable AC prongs from the side of the power bank and plug it directly into a standard wall outlet. The digital display will show the charging progress. This method typically takes approximately 11 hours for a full charge.
- Using a 9V-2A Charger (USB-C Port): Connect a compatible 9V-2A charger (not included) to the USB-C input port on the power bank. This method can fully charge the power bank in approximately 6 hours.

Figure 4: Recharging Options
5. Operating Instructions
5.1 Charging Your Devices
The Charmast Portable Charger is equipped with multiple output options to charge your devices:
- Built-in Cables: Extend the integrated Lightning, USB-C, or Micro USB cable from the side of the power bank and connect it directly to your device.
- USB-A Output Port: For devices requiring a standard USB-A connection, use your own USB-A cable and plug it into the USB-A output port on the power bank.
The power bank automatically detects the connected device and delivers optimal charging speed. The digital display will show the remaining battery percentage of the power bank.

Figure 5: Charging Multiple Devices
5.2 Fast Charging Capabilities
This power bank supports 20W PD and 18W QC 3.0 fast charging. This allows for significantly faster charging times compared to standard chargers. For example, it can charge an iPhone 13 from 20% to 70% or a Samsung S21 from 20% to 60% in just 30 minutes.

Figure 6: 20W Fast Charging in Action
5.3 Battery Capacity and Usage
The 20000mAh capacity provides ample power for extended use. Approximate charge counts for common devices include:
- iPhone 15 Pro Max: 2.71 charges
- iPhone 14 Pro Max: 3.75 charges
- iPhone 13: 3.87 charges
- iPad 10th generation: 1.55 charges
- Samsung Galaxy S22 Ultra: 2.4 charges
- Google Pixel or One Plus 11: 4.33 charges

Figure 7: 20000mAh Capacity Overview
6. Maintenance and Care
To ensure the longevity and optimal performance of your Charmast Portable Charger, follow these care guidelines:
- Keep the device dry and away from moisture.
- Avoid extreme temperatures (hot or cold).
- Do not drop, disassemble, or attempt to repair the device yourself.
- Clean the exterior with a soft, dry cloth. Avoid harsh chemicals.
- The fully rubberized cover provides protection against scratches and drops, but handle with care.
7. Safety Information
Your Charmast Portable Charger is equipped with multiple safety features to protect both the device and your connected electronics:
- Over-Discharge Protection: Prevents the battery from being drained too low.
- Short-Circuit Protection: Automatically shuts off power in case of a short circuit.
- Over Current Protection: Safeguards against excessive current flow.
- Over Voltage Protection: Protects against voltage spikes.

Figure 8: Multiple Safety Protections
7.1 Air Travel Guidelines
This portable charger is generally allowed in carry-on bags for air travel. However, it is not permitted in checked bags. Always check with your airline's specific regulations before traveling.

Figure 9: Plane Travel Guidelines
8. Troubleshooting
If you encounter any issues with your Charmast Portable Charger, please refer to the following common solutions:
- Device Not Charging: Ensure the power bank has sufficient charge. Check that the built-in cables or external USB cable are securely connected to both the power bank and your device. Try a different cable or device to isolate the issue.
- Power Bank Not Recharging: Verify that the wall outlet is functional. Ensure the foldable AC prongs are fully extended and properly inserted, or that the USB-C charging cable is securely connected to a working power adapter.
- Slow Charging: Confirm that your device supports fast charging and that you are using the appropriate port/cable. Some devices may charge slower if multiple devices are connected simultaneously.
- Digital Display Not Working: Press the power button briefly to activate the display. If it remains off, the battery might be completely depleted or there could be an internal issue.
If the problem persists after attempting these steps, please contact Charmast customer service for further assistance.
9. Specifications
| Feature | Specification |
|---|---|
| Model Number | C2046S |
| Battery Capacity | 20000 Milliamp Hours |
| Product Dimensions | 5.91 x 2.83 x 1.09 inches |
| Item Weight | 15.2 ounces |
| Connector Type | USB Type C, Lightning, Micro USB (built-in), USB-A (output) |
| Special Features | 20W Fast Charging, Built-in Cables, Built-in Wall Plug, Digital Display, Over Charging Protection |
| Manufacturer | Dong guan Utopia-Originality Technology Co., Ltd |
10. Warranty and Customer Support
Charmast provides comprehensive support for your portable charger:
- 24-Month Support: Enjoy peace of mind with our extended support period.
- 7-Day/24-Hour Customer Service: Our friendly customer service team is available around the clock to assist you.
If you have any problems or questions regarding your product, please do not hesitate to contact us. We are committed to resolving any issues within 24 hours.
For support, please visit the official Charmast website or refer to the contact information provided on your product packaging.