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Power Bank Fast Charging 20000mAh, Capacity 3.7V Portable Charger USB Input & Output Power Bank with LCD Display Battery Pack Compatible Built-in 3 Cables (Black, 20000, Milliamp Hours)
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SKU: PB20K-3B eBuyerhub Store

Power Bank Fast Charging 20000mAh, Capacity 3.7V Portable Charger USB Input & Output Power Bank with LCD Display Battery Pack Compatible Built-in 3 Cables (Black, 20000, Milliamp Hours)

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20000mAh Fast Charging Power Bank with LCD Display & 3 Built-In Cables – Black

Keep compatible smartphones and USB-powered devices charged throughout busy days with this practical 20000mAh portable power bank. Designed with a high-capacity rechargeable battery, LCD battery display and 3 built-in charging cables, it provides a convenient all-in-one charging solution for commuting, work, holidays, travel and everyday backup power.

The power bank is specified with a 20000mAh capacity at 3.7V and includes USB input and output functionality for suitable charging applications. It is also described as supporting fast charging, while the integrated cable design helps reduce the need to carry several separate charging leads.

Finished in a modern black colour, the portable battery pack is suitable for compatible smartphones and other supported USB-powered devices. Exact output wattage, fast-charging protocol, connector types, battery chemistry and simultaneous charging capability have not been supplied, so no unsupported charging-speed or device-specific specifications are stated.

20000mAh Battery Capacity

The power bank is specified with a 20000mAh rated capacity, providing a substantial portable energy reserve for compatible devices when access to mains charging is limited.

3.7V Battery Specification

The internal rechargeable battery is specified at 3.7V. Actual usable output capacity will be lower than the internal cell rating because of voltage conversion and normal charging losses.

Fast Charging Support

The power bank is described as supporting fast charging with compatible devices. Actual charging speed depends on the connected device, cable, charging protocol and supported output specification.

3 Built-In Charging Cables

The charger includes three integrated cables, helping simplify everyday charging and reducing the need to carry multiple loose leads.

USB Input

The product includes a USB input for recharging the power bank using a suitable compatible USB power source.

USB Output

A USB output provides an additional connection option for suitable charging cables and compatible USB-powered devices.

LCD Battery Display

The integrated LCD display provides a convenient visual reference for checking the remaining battery level before and during use.

Portable Phone Charger

Use the power bank to provide supplementary power for compatible smartphones during commuting, travelling or other times when wall charging is unavailable.

High-Capacity Backup Power

The 20000mAh specification provides a larger energy reserve than many lower-capacity chargers, making the unit useful for longer journeys and busy days.

Emergency Charging Support

A fully charged power bank can provide useful backup energy for compatible phones during suitable emergencies or temporary power interruptions.

Built-In Cable Convenience

Integrated charging leads provide quick access to compatible connections without requiring users to pack separate cables for every journey.

Compatible Device Charging

Use only with devices whose connector type, voltage and charging requirements match the power bank's supported cables and outputs.

Modern Black Finish

The black exterior provides a clean contemporary appearance suitable for personal, office and travel use.

Easy Battery Monitoring

Check the LCD display before leaving home or travelling to make sure sufficient stored power is available for the intended journey or activity.

Recharge Between Uses

Recharge the power bank regularly using a compatible power source so it remains prepared for future use.

Charging Efficiency Guidance

The actual number of device charges will vary according to the connected device's battery size, conversion losses, cable efficiency, charging protocol and device use during charging.

Safe Charging Practice

Use suitable charging accessories, keep the power bank adequately ventilated and stop using it if the casing becomes unusually hot, swollen, damaged or produces an unusual smell.

Protect from Heat & Water

Keep the battery pack away from water, open flames, excessive heat and prolonged exposure to strong direct sunlight.

Air Travel Guidance

Portable rechargeable batteries are subject to airline and aviation rules. Check the applicable airline requirements before travelling with the power bank by air.

Complete Portable Charging Solution

Combining a 20000mAh 3.7V battery, fast-charging support, LCD display, USB input and output, three built-in cables and modern black design, this power bank provides a practical charging solution for compatible mobile devices during commuting, work, travel and everyday use.

Package Information

Package Weight: 390 grams
Package Dimensions: 16.7 × 9.1 × 3.5 cm

Carton Information

Pieces in Carton: 24
Carton Net Weight: 9.90 kg
Carton Gross Weight: 10.30 kg
Carton Dimensions: 34.50 × 18.70 × 22.50 cm

Why Choose STEK?

STEK offers practical mobile charging and travel accessories designed to support convenient everyday power needs. With an emphasis on high-capacity portable charging, integrated cable convenience and easy battery monitoring, STEK provides useful solutions for commuting, work, holidays and compatible mobile devices.

About this item

  • 20000mAh High-Capacity Power Bank: Equipped with a 20000mAh battery , providing reliable backup power for smartphones, tablets, wireless earbuds, smartwatches, and other USB-powered devices throughout the day.
  • Fast Charging Technology: Delivers efficient high-speed charging to compatible devices, helping reduce charging time and keep your devices powered when you need them most.
  • Built-in Charging Cables: Features 3 integrated charging cables , eliminating the need to carry extra cables and making charging more convenient wherever you go.
  • LCD Digital Battery Display: The clear LCD screen displays the remaining battery percentage in real time, allowing you to easily monitor power levels and recharge when needed.
  • USB Input & Output Ports: Multiple charging options with USB input and output ports enable convenient charging of both the power bank and your electronic devices.
  • Wide Device Compatibility: Compatible with most iOS and Android smartphones , tablets, Bluetooth headphones, smartwatches, portable speakers, gaming accessories, and other USB-powered devices.
  • Portable & Travel-Friendly Design: Compact and lightweight construction fits easily into backpacks, handbags, laptop bags, or suitcases, making it ideal for travel and daily use.
  • Charge Multiple Devices: Designed to power multiple compatible devices, making it ideal for family travel, business trips, commuting, camping, and emergencies.
  • Advanced Safety Protection: Built-in protection against overcharging, overcurrent, overheating, overvoltage, and short circuits helps ensure safe and reliable charging.
  • Reliable Everyday Backup Power: Perfect for keeping your devices powered during work, commuting, holidays, outdoor adventures, power outages, and extended travel.
  • Durable & Stylish Black Finish: Modern black exterior offers a sleek appearance while providing a durable housing for everyday portability.
  • Easy to Use: Simply connect your device using one of the built-in cables or USB ports to enjoy convenient charging without carrying additional accessories.
  • Ideal for Home, Office & Travel: Perfect for students, professionals, travellers, commuters, campers, and anyone needing dependable portable power on the go.
  • Rechargeable & Reusable: Designed for repeated charging cycles, providing long-lasting performance and dependable backup power whenever required.
  • Complete Portable Charging Solution: Combining a 20000mAh capacity , fast charging technology, 3 built-in charging cables , LCD battery display, USB input and output ports, advanced safety protection, and universal compatibility with iOS and Android devices, this portable power bank is the perfect companion for home, travel, work, and everyday use.
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How to use 1. Charge the Power Bank Before First Use Connect the 20000mAh power bank to a compatible USB charger using the input port or built-in charging cable. Fully charge the battery before first use and monitor the LCD display until it reaches 100%. 2. Check the Battery Level Press the power button to activate the LCD display and view the remaining battery percentage. Recharge the power bank whenever the battery level becomes low. 3. Connect Your Device Use one of the built-in charging cables or a compatible USB cable to connect your iPhone, Android phone, tablet, earbuds, smartwatch, or other USB-powered device to the power bank. 4. Start Fast Charging Once connected, charging will begin automatically on most compatible devices. If required, press the power button to activate the output and enjoy fast, reliable charging while at home, work, or travelling. 5. Charge Multiple Devices Use the built-in cables and available USB output ports to charge multiple compatible devices at the same time, depending on the power bank's supported output capacity. 6. Disconnect After Charging Once your device is fully charged, disconnect the charging cable from both the power bank and your device to help preserve battery life and prevent unnecessary power consumption. 7. Recharge the Power Bank Regularly Recharge the power bank after use or whenever the battery level becomes low. Regular charging helps maintain battery performance and ensures it is always ready for emergencies or travel. 8. Store Safely Keep the power bank in a cool, dry place away from direct sunlight, moisture, excessive heat, and sharp objects. Proper storage helps protect the built-in battery, cables, and LCD display for long-lasting performance.