NOBIS A2651

Nobis 35W 20000mAh Power Bank User Manual (Model A2651)

Portable Fast Charging External Battery

1. Introduction

Thank you for choosing the Nobis 35W 20000mAh Power Bank. This portable charger is designed to provide fast and efficient power to your electronic devices on the go. Featuring a large capacity, multiple charging ports, and advanced safety features, it ensures your devices stay charged and protected. Please read this manual carefully before use to ensure optimal performance and safety.

2. Product Overview

Key Features

  • 35W Super Fast Charging: Supports PD 3.0 and QC 3.0 protocols for rapid charging of compatible devices.
  • 20000mAh Ultra-Large Capacity: Provides multiple charges for smartphones, tablets, and other devices.
  • 4 Ports (2x USB-A Output, 2x USB-C In/Out): Allows simultaneous charging of up to four devices.
  • Two-Way Fast Charging: Both input and output support up to 35W for quick recharging of the power bank and connected devices.
  • Digital LED Display: Clearly shows the remaining battery percentage.
  • Universal Compatibility: Works with smartphones, tablets, laptops, smartwatches, drones, and more.
  • Advanced Safety Protections: Includes temperature, over-charge, over-voltage, short-circuit, and over-current protection.
  • Airline Approved: Suitable for air travel.

Package Contents

  • Nobis 35W 20000mAh Power Bank (Model A2651) x 1
  • 3A Type-C to Type-C Charging Cable (30cm) x 1
  • User Manual x 1

Product Diagram

The image below illustrates the Nobis 35W 20000mAh Power Bank, highlighting its 35W fast charging capability and support for PD 3.0 & QC 4.0. It shows the power bank in a light blue color with a digital display indicating '100%'. A blue USB-C cable is connected, indicating charging. A note advises that a 35W or higher charging adapter is needed to achieve maximum charging speed.

Nobis 35W 20000mAh Power Bank with 35W fast charging and PD 3.0 & QC 4.0 support

This image demonstrates the power bank's ability to charge two devices simultaneously. A smartphone is connected via USB-C, showing 80% battery, while another device is connected via a second USB-C port, both receiving 35W power. It highlights PD3.0 35W and QC4.0 30W capabilities, and mentions that a C to C cable is included.

Nobis Power Bank simultaneously charging two devices via USB-C at 35W

The power bank offers versatile charging options with two Type-C ports and two USB-A ports. The image shows the power bank connected to a smartphone and a tablet, illustrating its capability to charge various essential devices.

Nobis Power Bank with 2x Type-C and 2x USB-A ports, charging a smartphone and a tablet

3. Setup

Initial Charging of the Power Bank

  1. Connect the included Type-C to Type-C cable to one of the power bank's Type-C input/output ports.
  2. Connect the other end of the cable to a compatible USB wall charger (35W or higher recommended for fastest charging).
  3. The digital LED display will show the charging progress, indicating the battery percentage.
  4. Charge the power bank fully before its first use. A full charge typically takes approximately 3 hours with a 35W input.

4. Operating Instructions

Checking Battery Level

Press the power button once to activate the digital LED display, which will show the current battery percentage of the power bank.

Charging External Devices

  1. Connect your device's charging cable to the appropriate output port on the power bank (USB-A or Type-C).
  2. Connect the other end of the cable to your device.
  3. The power bank will automatically begin charging your device. The LED display will remain active during charging.
  4. You can charge up to four devices simultaneously. The power bank intelligently adjusts current output distribution.

This image illustrates the power bank's capability to charge four devices simultaneously, showcasing intelligent current output distribution for multiple users.

Nobis Power Bank charging four devices simultaneously

The diagram details the port configuration: two Type-C ports (input/output) and two USB-A ports (output). It also shows the clear LED display for checking the power level and outlines single port input/output and dual port output specifications.

Nobis Power Bank port configuration with 2 Type-C and 2 USB-A ports, and LED display

Trickle Charging Mode (Low-Current Devices)

For charging low-current devices such as earbuds, smartwatches, or fitness trackers, activate Trickle Charging Mode to prevent overcharging and protect the device's battery.

  1. Double-click the power button to enter Trickle Charging Mode.
  2. The LED display will show a specific low-current indicator (e.g., two dashes or a different icon) instead of the percentage.
  3. Connect your low-current device.
  4. To exit Trickle Charging Mode, double-click the power button again, and the display will revert to showing the battery percentage.

This image differentiates between the 'General Mode' display (showing '100%') and the 'Trickle Charging Mode' display (showing two dashes). It explains how to double-click the power button to enter Trickle Charging Mode for better protection of low-current devices, with an example of charging earbuds.

Nobis Power Bank showing General Mode and Trickle Charging Mode displays

5. Maintenance

  • Cleaning: Wipe the power bank with a soft, dry cloth. Do not use harsh chemicals or abrasive materials.
  • Storage: Store the power bank in a cool, dry place away from direct sunlight, extreme temperatures, and humidity.
  • Battery Care: To prolong battery life, fully charge the power bank at least once every three months if not in regular use. Avoid completely draining the battery frequently.
  • Avoid Drops: Do not drop or subject the power bank to strong impacts.

6. Troubleshooting

  • Power Bank Not Charging: Ensure the charging cable is securely connected to both the power bank and the wall adapter. Verify the wall adapter is functioning and provides sufficient power (35W recommended).
  • Device Not Charging: Check if the power bank has sufficient charge. Ensure the charging cable is securely connected to both the power bank and your device. Try a different cable or port.
  • Slow Charging: Ensure your device and cable support fast charging. Use a 35W or higher wall adapter to recharge the power bank. If charging multiple devices, the output power per port may be reduced.
  • LED Display Not Working: Press the power button once to activate the display. If it remains off, the power bank might be completely discharged or require service.

7. Specifications

FeatureSpecification
Model NumberA2651
Battery Capacity20000mAh
Battery TypeLithium-polymer
Input (USB-C)Up to 35W
Output (USB-C)Up to 35W
Output (USB-A)Up to 30W (Single Port)
Total OutputMax 35W (Shared across ports)
Number of Ports4 (2x USB-A, 2x USB-C)
Dimensions (L x W x H)13.7 x 7 x 2.63 cm
Weight392 Grams
Charging Time (Power Bank)Approx. 3 hours (with 35W input)
Special FeaturesDigital Display, Auto Shut-off, Fast Charge, Short-circuit Protection, Overcharge Protection

8. Safety Information

The Nobis Power Bank is equipped with multiple safety features to ensure safe operation. These include:

  • Temperature Protection: Prevents overheating.
  • Over-Charge Protection: Protects against overcharging the power bank.
  • Over-Voltage Protection: Safeguards against excessive voltage input/output.
  • Short-Circuit Protection: Prevents damage from short circuits.
  • Over-Current Protection: Protects against excessive current flow.
  • Over-Discharge Protection: Prevents the power bank from being completely drained.

This image visually represents the comprehensive safety features of the power bank, including temperature, over-charge, over-voltage, short-circuit, and over-current protection, ensuring safe and durable use.

Nobis Power Bank with icons representing Temperature, Over Charge, Over Voltage, Short Circuit, and Over Current Protection

An exploded view of the power bank's internal components is shown alongside a detailed list of superior safety protections: Over-heat, Over-current, Over-discharge, Over-voltage, Short-circuit, and Over-charge Protection. It also reiterates the Trickle Charging Mode for low-current devices.

Nobis Power Bank internal components and list of superior safety protections

General Safety Precautions:

  • Do not disassemble, modify, or repair the device.
  • Do not expose to fire, water, or extreme temperatures.
  • Keep out of reach of children.
  • Use only original or certified cables.

9. Warranty and Support

The Nobis 35W 20000mAh Power Bank comes with a 3-year manufacturing warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use.

For warranty claims, technical support, or any questions regarding your product, please contact your retailer or the manufacturer directly with your purchase details and model number (A2651).

© 2026 NOBIS. All rights reserved.

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