Product Overview
The Anker Power Bank (Model A1383) is a versatile 20,000mAh portable charger designed for fast charging multiple devices. It features an 87W max output, including a built-in USB-C cable, and is suitable for charging laptops, smartphones, tablets, and more. Its high capacity ensures extended use, making it an essential travel companion.

Image: The Anker Power Bank in black, showcasing its sleek design, digital display, and integrated USB-C cable.
Key Features
- 87W Power to Share: Distribute 87W across three devices, with a single device receiving up to 65W, to rapidly charge iPhones, Samsung phones. Quickly charge a 14" MacBook Pro to 50% in under 40 minutes.
- Speedy Cable Charging: Utilize the built-in cable to elevate your iPhone 15 Pro to 58% or a MacBook Air to 52% in 30 minutes. You can also fully recharge this power bank in 1.5 hours with a 65W charger.
- 20,000mAh for Extended Use: Eliminate concerns about battery depletion with a 20,000mAh power bank that ensures consistent, reliable charging for all your devices, also approved for airline travel.
- Lasts Longer, Charges Faster: The integrated USB-C cable is designed to endure, withstanding over 10,000 bends for dependable charging and convenient storage.
Setup
Before first use, it is recommended to fully charge your Anker Power Bank.
- Connect a 65W (or higher) USB-C power adapter (sold separately) to the "IN/OUT" USB-C port on the power bank.
- The digital display will show the charging progress, indicating the battery percentage.
- The power bank is fully charged when the display shows 100%.

Image: The Anker Power Bank connected to a wall adapter for recharging, illustrating the process.
Operating Instructions
Charging Your Devices
The Anker Power Bank offers multiple ways to charge your devices:
- Using the Built-in USB-C Cable: Simply pull out the integrated USB-C cable from the side of the power bank and connect it directly to your USB-C compatible device.
- Using the USB-C Port: Connect your device's USB-C charging cable to the "IN/OUT" USB-C port on the power bank.
- Using the USB-A Port: Connect your device's USB-A charging cable to the "OUT" USB-A port on the power bank.

Image: The Anker Power Bank simultaneously charging a MacBook via its built-in cable and an iPhone via an external USB-C cable, demonstrating its multi-device charging capability.
Digital Display
The integrated digital display shows the remaining battery percentage of the power bank. It will light up automatically when a device is connected or when the power bank is being recharged.
Low Current Mode
For charging low-current devices like headphones or smartwatches, double-tap the power button to activate trickle charge mode. The display will show a green light to indicate this mode is active. This ensures optimal charging for smaller devices.
Maintenance
- Store the power bank in a cool, dry place away from direct sunlight and extreme temperatures.
- Avoid dropping or subjecting the power bank to strong impacts.
- Clean the surface with a soft, dry cloth. Do not use harsh chemicals or abrasive materials.
- For optimal battery life, fully charge and discharge the power bank at least once every three months if not in regular use.
Troubleshooting
Power Bank Not Charging
- Ensure the charging cable and wall adapter are functioning correctly. Try a different cable or adapter.
- Verify that the power adapter is 65W or higher for optimal recharging speed.
- Check if the charging port on the power bank is clean and free of debris.
Devices Not Charging
- Ensure the power bank has sufficient charge (check the digital display).
- Try a different charging cable for your device.
- Verify that the device is compatible with the power bank's output ports (USB-C, USB-A).
- For low-current devices, ensure trickle charge mode is activated.
Power Bank Not Charging While Discharging
This power bank is designed to prioritize charging connected devices. It cannot be simultaneously charged and discharge power to devices.
Specifications
| Feature | Detail |
|---|---|
| Product Dimensions | 6.22 x 1.02 x 2.91 inches |
| Item Weight | 14.1 ounces |
| Model Number | A1383 |
| Battery Capacity | 20000 Milliamp Hours |
| Max Output | 87W (65W from single port) |
| Connector Type | USB Type C, USB Type A |
| Special Feature | Fast Charging, Built In Cable |
Safety Information
- Do not expose the power bank to extreme temperatures (above 60°C/140°F) or direct sunlight.
- Do not disassemble, crush, or puncture the power bank.
- Keep away from water and other liquids.
- Dispose of the power bank responsibly according to local regulations. Do not dispose of it with household waste.
- Keep out of reach of children.
Warranty & Support
The Anker Power Bank (20K, 87W, Built-In USB-C Cable) comes with an 18-month warranty.
For customer service and support, please refer to the contact information provided in your product's welcome guide or visit the official Anker support website.
Online Support: www.anker.com/support
Brand Store: Anker Amazon Store





