Introduction
The mophie Power Boost XL (20K) is a portable power bank designed to provide reliable power for your mobile devices on the go. Featuring a large 20,000mAh internal battery, it offers multiple USB ports for simultaneous charging of various devices. Its versatile USB-C port allows for both charging devices and recharging the power bank itself. This manual provides essential information for the proper setup, operation, and maintenance of your Power Boost XL.
Key Features
- 20,000mAh Internal Battery: Contains reliable battery cells that hold their charge for extended periods, ensuring power when you need it most.
- Multiple Device Charges: Provides up to 4.8x full phone charges, allowing you to power your smartphone multiple times throughout the day.
- Versatile USB-C Port: Equipped with a USB-C port that can be used to recharge the power boost battery or to charge a compatible device.
- Simultaneous Charging: Charge two or three devices concurrently using the available USB-A and USB-C ports.
- LED Power Indicator: An integrated four-light LED system displays the current battery life and charging status at a glance.
Setup and Initial Use
Charging Your Power Boost XL
Before first use, fully charge your mophie Power Boost XL. This ensures optimal battery performance and longevity.
- Connect the provided USB-C cable to the USB-C port on the Power Boost XL.
- Connect the other end of the USB-C cable to a compatible USB wall adapter (not included) or a computer's USB port.
- The LED power indicator lights will illuminate to show the charging progress. All four lights will be solid when fully charged.

Image: Top view of the mophie Power Boost XL, highlighting the two USB-A output ports and the central USB-C port for input/output.
Charging Your Devices
The Power Boost XL can charge up to three devices simultaneously.
- Connect your device's charging cable to one of the USB-A output ports or the USB-C port on the Power Boost XL.
- Connect the other end of the cable to your device.
- Charging will begin automatically. The LED power indicator will show the remaining battery life of the power bank.

Image: The mophie Power Boost XL connected via cables to a tablet, a smartphone, and a pair of earbuds, demonstrating its multi-device charging capability.
Operating Instructions
Understanding the LED Power Indicator
The four LED lights on the side of the power bank provide a quick visual reference for its battery status:
- Four Solid Lights: 75-100% charged
- Three Solid Lights: 50-75% charged
- Two Solid Lights: 25-50% charged
- One Solid Light: 0-25% charged (recharge soon)
- Flashing Lights: Indicates the power bank is currently charging.

Image: A close-up view of the mophie Power Boost XL's side, clearly showing the four LED lights that indicate battery charge level.
Power Button Functionality
Press the power button once to check the current battery level. The LED indicators will light up for a few seconds. The power bank automatically detects when a device is connected and begins charging.
Maintenance
- Keep the power bank away from extreme temperatures, direct sunlight, and moisture.
- Do not disassemble or attempt to repair the device yourself.
- Clean the surface with a soft, dry cloth. Avoid using harsh chemicals or abrasive materials.
- Store in a cool, dry place when not in use for extended periods.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Power bank not charging | Cable issue, adapter issue, power bank fully charged. | Try a different cable or wall adapter. Ensure the power bank is not already full. |
| Device not charging from power bank | Power bank is depleted, cable issue, device compatibility. | Recharge the power bank. Try a different charging cable. Ensure your device is compatible with USB charging. |
| LED indicators not working | Power bank is off, internal issue. | Press the power button to activate the indicators. If problem persists, contact customer support. |
Specifications
| Attribute | Detail |
|---|---|
| Brand | mophie |
| Model Number | PWR-BOOST-20K |
| Product Dimensions | 10 x 8 x 2 inches |
| Item Weight | 15.9 ounces |
| Battery Capacity | 20000 mAh |
| Batteries Required | 2 Lithium Polymer batteries (included) |
| Connector Type | USB Type C, USB Type A |
| Color | Black |
| Special Feature | Portable |
Warranty and Support
For warranty information and customer support, please refer to the official mophie website or contact their customer service directly. Keep your proof of purchase for any warranty claims.
This product is verified by Transparency, meaning each item has a unique code that mophie verifies before shipping, ensuring authenticity.





