1. Product Overview
The charmast 20000mAh Portable Charger (Model C2065) is a high-capacity power bank designed to charge multiple devices on the go. It features built-in USB-C, Lightning, and Micro-USB cables, along with additional USB-A and USB-C ports, providing versatile charging options for a wide range of electronic devices. A digital display indicates the remaining battery percentage.
Image 1.1: The charmast 20000mAh Portable Charger (Model C2065) in Navy.
2. What's in the Box
Upon opening the package, verify that all items are present:
- 1 x charmast 20000mAh Portable Charger (Model C2065)
- 1 x User Manual
- 1 x Travel Pouch
3. Specifications
| Feature | Detail |
|---|---|
| Model Number | C2065 |
| Battery Capacity | 20000 Milliamp Hours (mAh) |
| Product Dimensions | 6.3 x 2.85 x 0.75 inches |
| Item Weight | 12 ounces |
| Output Ports | Built-in USB-C, Lightning, Micro-USB cables; 2x USB-A ports; 1x USB-C port (Input/Output) |
| Fast Charging | 22.5W PD Fast Charging |
| Special Features | Built-in cables, Digital Display, Fast Charging, High Capacity, Slim design |
4. Setup
4.1 Initial Charging of the Power Bank
Before first use, fully charge the power bank. The digital display will show the charging progress from 0% to 100%.
- Using the Built-in USB-C Cable: Connect the built-in USB-C cable to a compatible USB wall adapter (not included). Charging time is approximately 6 hours.
- Using the Built-in USB-A Cable: Connect the built-in USB-A cable to a compatible USB wall adapter (not included). Charging time is approximately 12 hours.
- Using an External Cable (USB-C Input): Connect a USB-C cable (not included) to the power bank's USB-C input port and a compatible 18W PD/QC wall adapter. Charging time is approximately 6 hours.
- Using an External Cable (Micro-USB Input): Connect a Micro-USB cable (not included) to the power bank's Micro-USB input port and a compatible 18W PD/QC wall adapter. Charging time is approximately 6 hours.
Image 4.1: Methods for recharging the power bank.
5. Operating Instructions
5.1 Charging Devices
The power bank offers multiple ways to charge your devices:
- Using Built-in Cables: The power bank includes built-in Lightning, USB-C, and Micro-USB cables. Simply pull out the appropriate cable and connect it directly to your device.
- Using USB-A Ports: Connect your device's USB-A charging cable to one of the two USB-A output ports on the power bank.
- Using USB-C Port: Connect your device's USB-C charging cable to the USB-C output port on the power bank. This port also supports input for recharging the power bank.
Image 5.1: Built-in cables for various devices.
5.2 Simultaneous Charging
The power bank can charge up to six devices simultaneously using a combination of its built-in cables and external USB ports.
Image 5.2: Charging multiple devices.
5.3 Fast Charging
The power bank supports 22.5W PD fast charging. When connected to a compatible device, it can charge up to 50% in approximately 30 minutes. Ensure your device and cable support fast charging for optimal performance.
Image 5.3: Fast charging in action.
5.4 Digital Display
The integrated digital display shows the precise remaining battery percentage (0-100%) of the power bank. This allows for accurate monitoring of the power bank's charge level.
Image 5.4: Digital display showing battery percentage.
5.5 Low-Current Mode
For charging low-power devices such as Bluetooth earphones, smartwatches, or fitness trackers, activate the low-current mode. Press and hold the power button for 5 seconds to engage this mode, ensuring safe and efficient charging for smaller electronics.
6. Safety Information
- Do not expose the power bank to extreme temperatures (hot or cold), direct sunlight, or fire.
- Avoid dropping, disassembling, or modifying the device.
- Keep away from water and high humidity.
- Store in a cool, dry place when not in use.
- Keep out of reach of children.
- Flight Travel: This power bank meets airline safety standards for carry-on luggage. Always pack it in your carry-on bag; never place it in checked luggage.
Image 6.1: The power bank is flight-friendly.
7. Maintenance
- Clean the power bank with a soft, dry cloth. Do not use harsh chemicals or abrasive materials.
- If the power bank will not be used for an extended period, charge it to approximately 50-75% every three months to maintain battery health.
- Avoid storing the power bank in extreme temperatures or direct sunlight.
8. Troubleshooting
8.1 Power Bank Not Charging
- Ensure the charging cable is securely connected to both the power bank's input port/built-in cable and the wall adapter.
- Verify that the wall adapter is functioning correctly and plugged into a live power outlet.
- Try a different charging cable or wall adapter.
8.2 Device Not Charging from Power Bank
- Check if the power bank has sufficient charge (refer to the digital display).
- Ensure the cable connecting the device to the power bank is securely plugged in at both ends.
- Try a different output port or built-in cable on the power bank.
- Verify that your device's charging port is clean and free of debris.
- If charging a low-power device, ensure Low-Current Mode is activated (press and hold power button for 5 seconds).
8.3 Slow Charging
- Ensure both the power bank and your device support fast charging protocols.
- Use a high-quality, fast-charging compatible cable.
- Avoid charging multiple devices simultaneously if you require maximum speed for a single device.
9. Warranty and Support
The charmast 20000mAh Portable Charger comes with 24 months of support and lifetime technical support. For assistance, please refer to the contact information provided in your product packaging or visit the official charmast website.
