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20000mah Power Bank Comparison - July 2025

6 Best 20000mah Power Bank In the UK

1
Best Choice
9.9Exceptional
2
9.8Exceptional
3
9.6Exceptional
4
Best Value
9.5Excellent
5
9.4Excellent
6
9.3Excellent
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Model

Anker Power Bank, 325 Portable Charger (PowerCore 20K II), 20,000mAh Battery Pack with 2-Port, 15W High-Speed Charging for iPhone 16/16 Plus/16 Pro/16 Pro Max/15/14/13 Series, Samsung Galaxy and More
Model
Anker Zolo Power Bank, 20,000mAh 30W High-Speed Portable Charger with Built-In USB-C Cable, Battery Pack For iPhone 16/16 Plus/16 Pro/16 Pro Max/15 Series, Galaxy, and More
Model
Anker Power Bank, 325 Portable Charger, 20,000mAh Battery Pack with PowerIQ Tech, USB-C Input and Output Ports for iPhone 16/15 Series, Samsung Galaxy, AirPods, and More (PowerCore Essential 20K)
Model
INIU Power Bank, 20000mAh Fast Charging Portable Charger, 22.5W Powerbank with USB C Input & Output, Battery Pack PD3.0 QC4.0 for iPhone 15 14 13 12 11 Pro Max Mini Plus Samsung S22 S21 S20 iPad etc
Model
UGREEN Nexode 20000mAh Power Bank Fast Charging, PD 20W & QC 22.5W 3-Port Mobile Phone Portable Charger, USB C Battery Pack Compatible with iPhone 16/15, Galaxy S24/S23, iPad Pro, AirPods, etc
Model
Power Bank 20000mAh, PD3.0 QC4.0 22.5W Fast Charging PD20W USB C PowerBank Portable Charger With LCD Display 3 Outputs & 2 Inputs For Smartphones and Camping (black2)

Brand

Anker
Brand
Anker
Brand
Anker
Brand
INIU
Brand
UGREEN
Brand
TUXINSUN

Reviews

12,000 reviews
Reviews
1,208 reviews
Reviews
6,904 reviews
Reviews
92,808 reviews
Reviews
360 reviews
Reviews
32 reviews

Tech Specs

product dimensions

16.31 x 8.1 x 2.41 cm 465 g
product dimensions
11.99 x 7.37 x 3.15 cm 420 g
product dimensions
15.8 x 7.4 x 1.9 cm 380 g
product dimensions
13.5 x 7 x 2.5 cm 365 g
product dimensions
14.7 x 7.16 x 2.77 cm 435 g
product dimensions
13.5 x 6.5 x 1 cm 230 g

batteries

1 Lithium Polymer batteries required.
batteries
1 Lithium Polymer batteries required. included
batteries
1 Lithium Polymer batteries required. included
batteries
1 Lithium Polymer batteries required.
batteries
2 Lithium Polymer batteries required. included
batteries
1 Lithium Polymer batteries required. included

Available On

Available On
Available On
Available On
Available On
Available On

Our Top 3 Picks

Here are the top 3 recommended products with more information to help you find the right product for you
  • 9.9
    1
    Anker

    Anker Power Bank, 325 Portable Charger (PowerCore 20K II), 20,000mAh Battery Pack with 2-Port, 15W High-Speed Charging for iPhone 16/16 Plus/16 Pro/16 Pro Max/15/14/13 Series, Samsung Galaxy and More

    Why we love it

    Compact and travel-friendly design.
    Charges two devices simultaneously.
    Fast charging with 15W output.
    Main highlights
    • What You Get: Anker 325 Power Bank (PowerCore 20K II), welcome guide, our worry-free 18-month warranty, and friendly customer service.
    • Unbeatable Power On the Go: Keep your devices charged for days with 20,000mAh of power. Charge an iPhone 14 up to 4.3 times, or an iPad Pro 12.9" over 1 time—ideal for when you're on the move.
    • Compact and Convenient: Anker 325 Power Bank is designed with your convenience in mind. It's super compact, lightweight, and easy to hold, making it the perfect companion for travel or everyday use.
    • Charge 2 Devices At Once: Comes equipped with 1 USB-C and 1 USB-A port, allowing you to charge two devices simultaneously.
    • 15W Full-Speed Charging: With 15W fast charging, you can enjoy the convenience of having your devices fully charged in no time, so you can get back to work or play.
  • 9.8
    2
    Anker

    Anker Zolo Power Bank, 20,000mAh 30W High-Speed Portable Charger with Built-In USB-C Cable, Battery Pack For iPhone 16/16 Plus/16 Pro/16 Pro Max/15 Series, Galaxy, and More

    Why we love it

    Charges iPhone 15 four times.
    Fast 30W two-way charging.
    Durable built-in USB-C cable.
    Main highlights
    • What You Get: Anker Zolo Power Bank (20K, 30W, Built-In USB-C Cable 15.2cm/5.98in), welcome guide, 18-month warranty, and our friendly customer service.
    • Go Beyond with 20,000mAh: Carry the power you need to charge your iPhone 15 up to 4 times or your Samsung S24 3.79 times, perfect for extended travel and long days.
    • Enhanced Safety: Equipped with ActiveShield 2.0 technology that monitors temperatures 3 million times per day and adjusts power output to ensure safe charging.
    • Durability on Demand: Features a 5.98-inch built-in USB-C cable that's not only convenient but also extremely durable, designed to withstand over 10,000 bends.
    • 30W Two-Way Fast Charging: Charge quickly with 30W output and recharge just as fast with 20W input, keeping your devices ready in no time. Boost an iPhone 15 from 0 to 57% in just 30 minutes.
  • 9.6
    3
    Anker
    11% Off

    Anker Power Bank, 325 Portable Charger, 20,000mAh Battery Pack with PowerIQ Tech, USB-C Input and Output Ports for iPhone 16/15 Series, Samsung Galaxy, AirPods, and More (PowerCore Essential 20K)

    Why we love it

    Massive 20,000mAh capacity for multiple charges.
    Bi-directional USB-C for simultaneous charging.
    Fast and safe charging with PowerIQ technology.
    Main highlights
    • What You Get: Anker 325 Power Bank (PowerCore 20K), USB-C cable, welcome guide, our worry-free 18-month warranty, and friendly customer service.
    • Ultra-High Capacity: The massive 20,000mAh capacity provides 3.6 charges for iPhone 15 and 2.9 charges for Samsung Galaxy S23 Ultra.
    • PowerIQ and VoltageBoost Technology: Experience fast and safe charging for all devices with Anker's leading technology, including a trickle-charging mode for low-power accessories.
    • Multiple Recharge Options: Choose between USB-C or Micro USB ports to recharge the power bank. Achieve a full charge in just 9 hours with a 15W or higher charger.
    • Bi-Directional USB-C Charging: The USB-C port supports two-way charging with a 15W power for both input and output, allowing you to charge two devices simultaneously.

Our ranking system

The TopChoice.co.uk Team selects top-of-the-line items from a wide selection and conducts rigorous evaluations on almost all the products available on the internet. We rank each product based on how well it matches our criteria.We can ensure that the product is well-tested with the help of our expertise, experts, and artificial intelligence technology. TopChoice.co.uk requires consistent care for the products we review, ensuring that our assessments are always accurate and up to date.

Features

Our team of experts analyzes key attributes, capabilities, significance, and many more depending on the type of product to determine its effectiveness.
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Consumer Reviews

We ensure an evaluation of the ratings using references all over the internet for each product. With the help of our AI technology and professional review teams, we give weight to the worth of individual user experiences.
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Popularity

Popularity is an important criterion in choosing a product. Several factors contribute to the popularity of the products on our site, including prestige, relevance, reputation, news, and more.
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Value for money

TopChoice.co.uk compares product attributes to price, examines tech specs, ratings and reviews, and more.

When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.

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