Borofone BJ84A 20000mAh Smooth Portable Power Bank With Built in USB A/Micro USB/ USB Type C / Lightning Cable

$29.99
Sku: (490GParcel)1xBorofone(10091)BJ84A

Borofone BJ84A 20000mAh Portable Power Bank with 4 Built-in Charging Cables

Stay powered wherever you go with the Borofone BJ84A 20000mAh Portable Power Bank, featuring four convenient built-in cables, multiple charging connections and an LED battery indicator.

The Borofone BJ84A Smooth Power Bank is designed for convenient everyday charging without the hassle of carrying multiple separate cables.

Featuring a high-capacity 20000mAh (74Wh) lithium polymer battery, this portable charger provides backup power for compatible iPhones, Samsung Galaxy smartphones, Google Pixel devices, tablets and other USB-powered accessories.

With integrated USB-C, Lightning-compatible, Micro USB and USB-A connections, the BJ84A offers a versatile charging solution for home, office, commuting and travel.

Its durable ABS + PC construction, compact design and LED battery indicator make it a practical choice for keeping your devices powered throughout the day.

Key Features & Benefits

20000mAh High-Capacity Portable Battery

The Borofone BJ84A features a rechargeable 20000mAh lithium polymer battery with a rated energy capacity of 74Wh.

Key benefits:

  • 20000mAh battery capacity

  • 74Wh rated battery energy

  • Portable backup power for compatible smartphones and accessories

  • Suitable for everyday use and travel

  • Convenient recharging through supported input connections

The number of device charges depends on the connected device's battery capacity, charging efficiency and usage.

Four Convenient Built-in Cables

Enjoy the convenience of integrated cables that help reduce the need to carry separate charging accessories.

Built-in connections include:

  • USB-C Cable: For charging compatible USB-C smartphones and devices

  • Lightning-Compatible Cable: For charging compatible Lightning-equipped iPhones and other Apple devices

  • Micro USB Cable: For charging compatible older smartphones and accessories

  • USB-A Cable: For recharging the power bank from a compatible USB-A power source

The integrated cable design makes the BJ84A especially convenient for everyday commuting, holidays and shared charging situations.

Multiple Device Charging Options

The Borofone BJ84A provides several charging connections, making it suitable for different types of USB-powered devices.

Available outputs:

  • USB-A Output: 5V/2A

  • USB-C Built-in Cable: 5V/2A

  • Micro USB Built-in Cable: 5V/2A

  • Lightning-Compatible Built-in Cable: 5V/2A

Maximum Total Output: 5V/2A (10W)

When multiple devices are connected, the available output is shared between them.

Important: The BJ84A provides standard USB charging up to 10W total. It should not be advertised as a 20W PD, 22.5W or 30W fast-charging power bank.

Convenient USB-C and USB-A Recharging

Recharge the BJ84A using its supported input connections.

Input Specifications:

  • USB-C Input: 5V/2A

  • Built-in USB-A Input Cable: 5V/2A

The maximum advertised input power is 10W.

Actual recharge time depends on the charging adapter, cable, battery condition and temperature.

LED Battery Level Indicator

The BJ84A features an LED battery indicator to help monitor the remaining battery level.

Benefits include:

  • Convenient battery-status indication

  • Helps identify when the power bank needs recharging

  • Easy to check remaining power

  • Useful for daily charging and travel

Wide Compatibility with Smartphones & Accessories

The Borofone BJ84A supports a range of devices using its built-in charging cables and USB output.

Compatible Apple Devices

  • iPhone 14 Series

  • iPhone 13 Series

  • iPhone 12 Series

  • iPhone 11 Series

  • iPhone X, XS, XS Max and XR

  • iPhone 8 and 8 Plus

  • Compatible Lightning-equipped iPads

  • iPhone 15, 16,17 and 18 series using the USB-C connection

Compatible Samsung Devices

  • Samsung Galaxy S Series

  • Samsung Galaxy A Series

  • Samsung Galaxy Z Series

  • Other compatible USB-C Samsung devices

Google Pixel Devices

  • Compatible Google Pixel smartphones with USB-C charging

Other Compatible Devices

  • OPPO smartphones

  • Xiaomi smartphones

  • Motorola smartphones

  • USB-C wireless earbuds

  • Micro USB accessories

  • Other compatible USB-powered devices

Note: Device charging speed depends on compatibility and the available 5V/2A output. Some devices may require additional power or different charging protocols.

Compact & Practical Portable Design

The Borofone BJ84A features a compact rectangular body with a textured finish and integrated cable storage.

Dimensions: 147 × 68 × 33mm

Weight: Approximately 420g

Its built-in cables make it convenient to carry in a backpack, handbag or travel bag.

Durable ABS + PC Housing

Constructed from ABS and PC materials with an internal lithium polymer battery cell, the BJ84A is designed for everyday portable charging.

The integrated cable storage design helps keep charging connectors organised when not in use.

Suitable for Travel

With a rated battery energy of 74Wh, the BJ84A falls below the commonly applied 100Wh threshold for lithium-ion power banks on many airlines.

Power banks must generally be carried in cabin baggage rather than checked luggage. Always check your airline's current restrictions before travelling.

Technical Specifications

Specification Details
Brand Borofone
Model BJ84A Smooth
Product Type Portable Power Bank
Battery Capacity 20000mAh
Battery Energy 74Wh
Battery Type Lithium Polymer
Built-in Cables 4
Cable Connections USB-A, USB-C, Micro USB, Lightning-Compatible
USB-C Input 5V/2A
Built-in USB-A Input 5V/2A
USB-A Output 5V/2A
USB-C Cable Output 5V/2A
Micro USB Cable Output 5V/2A
Lightning-Compatible Cable Output 5V/2A
Maximum Total Output 5V/2A (10W)
Battery Indicator LED
Housing Material ABS + PC
Dimensions 147 × 68 × 33mm
Weight Approximately 420g
Colour Black

How to Use

Charging Your Smartphone

  1. Select the appropriate built-in charging cable.

  2. Connect the cable to your compatible smartphone.

  3. Confirm that charging has started on your device.

  4. Disconnect the device after charging.

Alternatively, use the USB-A output with a suitable separate charging cable.

Recharging the Power Bank

  1. Connect the built-in USB-A input cable to a compatible USB power adapter, or use the supported USB-C input.

  2. Connect the adapter to a suitable power source.

  3. Monitor the LED battery indicator.

  4. Disconnect the power bank once charging is complete.

Package Includes

  • 1 × Borofone BJ84A 20000mAh Power Bank

  • 4 × Integrated Charging/Input Cables (attached to the power bank)

Please Note: Smartphones, tablets and external wall chargers are not included.

Why Choose the Borofone BJ84A?

The Borofone BJ84A is an excellent option for customers looking for a practical, high-capacity power bank with built-in charging connections.

Instead of carrying multiple charging cables, you can use the integrated USB-C, Lightning-compatible and Micro USB cables to charge a range of compatible devices.

With a 20000mAh battery, LED battery indicator and convenient cable storage, the BJ84A is suitable for everyday charging at home, at work or while travelling.

Keep your essential devices powered with the Borofone BJ84A 20000mAh Portable Power Bank with 4 Built-in Cables.

Apple, iPhone, Samsung Galaxy and Google Pixel are trademarks of their respective owners. This is a Borofone-branded third-party charging accessory.

Frequently Asked Questions (FAQs)

Q1. What is the battery capacity of the Borofone BJ84A?

The Borofone BJ84A features a 20000mAh lithium polymer battery with a rated energy capacity of 74Wh.


Q2. Does the Borofone BJ84A come with built-in charging cables?

Yes. The BJ84A features four integrated connections: USB-A, USB-C, Micro USB and Lightning-compatible.


Q3. Do I need to carry a separate charging cable?

Not for devices compatible with the built-in charging cables. The power bank also provides a USB-A output for use with a separate compatible cable.


Q4. Is the Borofone BJ84A compatible with iPhone 15, 16, 17 & 18?

Yes. Compatible USB-C iPhones can use the built-in USB-C charging cable. Charging speed is limited by the power bank's available output.


Q5. Does the BJ84A work with iPhone 14, 13 and 12?

Yes. These models can use the built-in Lightning-compatible charging cable.


Q6. Can I charge Samsung Galaxy smartphones?

Yes. Compatible Samsung Galaxy smartphones with USB-C charging ports can use the integrated USB-C cable.


Q7. Is this power bank compatible with Google Pixel phones?

Yes. Compatible Google Pixel smartphones can charge using the USB-C connection.


Q8. Does the Borofone BJ84A support fast charging?

The BJ84A provides up to 5V/2A (10W) total output. It does not have confirmed USB-C PD or other higher-wattage fast-charging support.


Q9. Can I charge multiple devices simultaneously?

The power bank provides multiple output connections, but its maximum combined output is 10W. When more than one device is connected, the available power is shared. Confirm simultaneous-operation support if this is a key requirement.


Q10. How many times can a 20000mAh power bank charge my phone?

The number of charges depends on your phone's battery capacity, charging efficiency and usage. A 20000mAh internal battery does not deliver the full rated capacity to the phone because some energy is lost during charging.


Q11. How do I recharge the Borofone BJ84A?

You can recharge it using the supported USB-C input or built-in USB-A input cable connected to a suitable USB power source.


Q12. How long does the BJ84A take to recharge?

The advertised maximum input is 10W. A full recharge may take approximately 10–12 hours or longer, depending on the adapter, charging efficiency and battery condition. This is an estimate, not a manufacturer-confirmed charging time.


Q13. Does the power bank have a battery indicator?

Yes. The BJ84A features an LED indicator to help show the remaining battery level.


Q14. Can I charge an iPad with this power bank?

It can charge compatible iPads that accept the available USB charging output. Some larger tablets may charge slowly or require higher power.


Q15. Is the Borofone BJ84A suitable for air travel?

Its stated battery energy is 74Wh, below the common 100Wh threshold. However, airlines may impose additional restrictions. Power banks generally belong in carry-on baggage, not checked luggage.


Q16. What is the difference between the USB-A and USB-C built-in cables?

The built-in USB-A cable is specified as an input for recharging the power bank. The USB-C cable supports charging compatible USB-C devices.


Q17. Does the BJ84A support wireless charging?

No wireless charging capability is listed in the supplied specifications. The BJ84A is designed for wired USB charging.


Q18. What are the dimensions of the BJ84A?

The power bank measures approximately 147 × 68 × 33mm.


Q19. How much does the Borofone BJ84A weigh?

It weighs approximately 420g.


Q20. Is the Borofone BJ84A suitable for everyday use?

Yes. Its 20000mAh capacity, integrated charging cables and LED battery indicator make it convenient for commuting, work, travel and everyday backup charging.