Anker A1688

Anker Zolo Power Bank (2025 Upgraded Version) Instruction Manual

Model: A1688 | Brand: Anker

1. Introduction

Thank you for choosing the Anker Zolo Power Bank. This portable charger is designed to provide reliable and high-speed power for your mobile devices. Please read this manual carefully before use to ensure optimal performance and safety.

Key Features:

  • High Capacity: 20,000mAh battery, capable of charging an iPhone 15 up to 4 times or a Samsung S24 3.79 times.
  • 30W Two-Way Fast Charging: Delivers 30W output for rapid device charging and supports 20W input for quick recharging of the power bank itself.
  • Built-in USB-C Cable: Features a durable 5.98-inch (15.2 cm) integrated USB-C cable, tested to withstand over 10,000 bends.
  • Compact and Portable: Measures 4.72 × 2.89 × 1.23 inches and weighs only 12.45 oz, making it easy to carry.
  • ActiveShield 2.0 Technology: Monitors temperatures over 3 million times per day to ensure safe and stable power delivery.
  • Digital Display: Provides real-time battery percentage for precise power monitoring.

2. Package Contents

Ensure all items are present in your package:

  • Anker Zolo Power Bank (20K, 30W)
  • Built-in USB-C cable (5.98-inch / 15.2 cm)
  • Welcome Guide

3. Product Overview

Familiarize yourself with the components of your Anker Zolo Power Bank.

Anker Zolo Power Bank, black color, showing its compact design and built-in USB-C cable.

Figure 3.1: Anker Zolo Power Bank (Black)

Components:

  • Digital Display: Shows the remaining battery percentage.
  • Power Button: Activates the power bank and trickle-charging mode.
  • Built-in USB-C Cable: For charging devices and recharging the power bank.
  • USB-A Output Port: For charging devices using a separate USB-A cable.
  • USB-C Input/Output Port: For charging devices or recharging the power bank using a separate USB-C cable.
Anker Zolo Power Bank charging an iPhone 16 Pro Max, illustrating 30W high-speed charging capability.

Figure 3.2: 30W High-Speed Charging

The power bank supports 30W high-speed charging, allowing you to quickly power up compatible devices like the iPhone 16 Pro Max.

Close-up of the Anker Zolo Power Bank's durable braided built-in USB-C cable, highlighting its 5.98-inch length and stain-resistant feature.

Figure 3.3: Durable Built-in Cable

The integrated USB-C cable is designed for durability and convenience, eliminating the need to carry extra cables.

Anker Zolo Power Bank on a scale next to a soda can, demonstrating its compact size and weight of 12.45 oz.

Figure 3.4: Compact Size and Weight

The power bank is designed to be lightweight and portable, comparable to the weight of a standard soda can.

Diagram showing the Anker Zolo Power Bank's two-way fast charging, with 20W max input and 30W max output.

Figure 3.5: Two-Way Fast Charging

The power bank supports both fast charging your devices (30W output) and fast recharging itself (20W input).

Graphic illustrating ActiveShield 2.0 technology monitoring temperatures over 3,000,000 times per day for real-time protection.

Figure 3.6: ActiveShield 2.0 Protection

ActiveShield 2.0 technology provides advanced temperature monitoring for enhanced safety during charging.

A person holding the Anker Zolo Power Bank, with text indicating 20,000mAh capacity and charging capabilities for iPhone 15 and Samsung S24, also showing 'Flight Approved'.

Figure 3.7: 20,000mAh Capacity and Flight Approved

The 20,000mAh capacity ensures extended power, and the power bank is approved for air travel.

4. Setup

4.1 Initial Charging

Before first use, fully charge your Anker Zolo Power Bank. Connect the built-in USB-C cable or a separate USB-C cable to the power bank's USB-C port and then to a compatible wall charger (not included). The digital display will show the charging progress. A full charge typically takes approximately 5 hours.

4.2 Activating the Power Bank

To activate the power bank and view the battery level on the digital display, press the power button once.

5. Operating Instructions

5.1 Charging Your Devices

You can charge your devices using the built-in USB-C cable, the USB-A output port, or the USB-C input/output port.

  • Using the Built-in USB-C Cable: Extend the built-in USB-C cable and connect it directly to your USB-C compatible device. The power bank will automatically begin charging.
  • Using the USB-A Output Port: Connect a standard USB-A to your device's charging cable to the USB-A output port on the power bank, then connect the other end to your device.
  • Using the USB-C Input/Output Port: Connect a USB-C to USB-C cable to this port and your device.

The digital display will show the remaining battery percentage during charging.

5.2 Recharging the Power Bank

To recharge the power bank, connect the built-in USB-C cable or a separate USB-C cable to the power bank's USB-C port and then to a compatible wall charger. The digital display will indicate charging status.

5.3 Trickle-Charging Mode

For charging low-power devices such as Bluetooth earbuds or smartwatches, activate trickle-charging mode:

  1. Press the power button twice.
  2. A green indicator will appear on the digital display, confirming trickle-charging mode is active.
  3. Connect your low-power device to the power bank.

To exit trickle-charging mode, press the power button once.

6. Maintenance

  • Keep the power bank away from liquids, extreme heat, and direct sunlight.
  • Store the power bank in a cool, dry place when not in use.
  • Clean the power bank with a dry, soft cloth. Do not use corrosive cleaners or sprays.
  • Recharge the power bank at least once every 3 months to maintain battery health.

7. Troubleshooting

ProblemPossible Solution
Power bank not charging devices.
  • Ensure the power bank is sufficiently charged.
  • Press the power button once to activate the power bank.
  • Check if the charging cable is securely connected to both the power bank and the device.
  • Try a different charging cable or port.
Power bank not recharging.
  • Ensure the charging cable is securely connected to both the power bank and the wall charger.
  • Verify that the wall charger is functioning correctly and provides sufficient power (20W recommended).
  • Try a different wall charger or USB-C cable.
Slow charging.
  • Ensure your device supports fast charging.
  • Avoid using the device while it is charging.
  • Check if the cable is MFi certified (for Apple devices) or a high-quality USB-C cable.
Digital display not working.
  • Press the power button once to activate the display.
  • If the issue persists, the power bank may require service.

8. Specifications

FeatureDetail
Model NumberA1688
Battery Capacity20000 Milliamp Hours (mAh)
Battery Cell TypeLithium Polymer
Output Power30W Max
Input Power20W Max
Connector TypeUSB Type C (Built-in cable, Input/Output port)
Number of Ports3 (1x Built-in USB-C, 1x USB-A Output, 1x USB-C Input/Output)
Battery Charge TimeApprox. 5 Hours (with 20W charger)
Item Dimensions (L x W x Th)4.72" x 2.89" x 1.24" (119.9 x 73.4 x 31.4 mm)
Item Weight12.45 oz (365 Grams)
Compatible DevicesSmartphones, Tablets, Earbuds, Smartwatches, etc.
ColorBlack
UPC194644038403

9. Safety Information

Please read and follow these safety instructions to prevent injury or damage to your device:

  • Do not expose the power bank to fire, water, or extreme temperatures (above 40°C/104°F or below 0°C/32°F).
  • Do not disassemble, crush, or puncture the power bank.
  • Keep out of reach of children.
  • Do not use the power bank if it has been damaged or modified.
  • Dispose of the power bank according to local regulations. Do not dispose of it with household waste.
  • Avoid dropping or subjecting the power bank to strong impacts.
  • Use only original or certified cables for charging and recharging.

10. Warranty and Customer Support

10.1 Warranty

Anker provides an 18-month warranty for this product, covering manufacturing defects from the date of purchase. Please retain your proof of purchase for warranty claims.

10.2 Customer Service

For technical support, warranty claims, or other inquiries, please contact Anker customer service. Refer to the contact information provided in your Welcome Guide or visit the official Anker website.

11. Product Videos

Which Anker Zolo Power Bank to Buy? 20K vs 20K Dual

This video provides a comparison between different Anker Zolo Power Bank models, helping users understand the differences between the 20K and 20K Dual versions.

Honest Look at this Super Compact Powerbank from Anker

A detailed review offering an honest perspective on the compact design and features of the Anker Zolo Power Bank.

Fast charging Anker Power Bank

This video demonstrates the fast charging capabilities of the Anker Zolo Power Bank.

Review of the Anker Zolo 20K 30 Watt Power Bank

An in-depth review covering the features and performance of the Anker Zolo 20K 30 Watt Power Bank.

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