In the age of digital connectivity, where every device plays an essential role in our daily routines, nothing frustrates more than seeing the dreaded low battery warning. Whether you’re capturing memories with your camera, navigating through an unknown city using your smartphone, or staying on top of work emails, you need power — and lots of it. Enter the realm of 20,000mAh power banks, a savior for those on the move.

Boasting a capacity enough to charge an average smartphone roughly five to seven times — that’s almost akin to having five full iPhone 13 Pro batteries (3,095mAh) or about 20,000 milliamp-hours (mAh) — these compact devices have risen to fame in recent years. For those more comfortable with Imperial units, think of them as the heavy-lifters, having approximately 76.8 watt-hours (Wh) of energy stored in a pocket-sized format. That’s more power than most standard laptop batteries offer.

But with a plethora of options flooding the market, pinpointing the cream of the crop can be a daunting task. Some power banks cater to the adventure seeker with rugged exteriors and water resistance. Others are crafted for the tech-savvy user, integrating features like wireless charging, multiple USB-C ports, and fast charging capabilities that juice up your devices at lightning speeds.

There’s also the intricate dance of aesthetics and portability. A power bank shouldn’t just be a lifeline for your gadgets; it should effortlessly slip into bags, suitcases, or even pockets. With weights ranging around 15 ounces (425 grams) or less, these portable chargers promise not just efficiency but also convenience.

In this comprehensive guide, we’ve done the legwork to compile a list of the top 20,000mAh power banks available today. From their design and build quality to charging performance and additional features, we delve into what truly makes each of these power banks stand out. After all, in the ever-evolving world of technology, ensuring you’re equipped with the best is not just a luxury — it’s a necessity. Join us as we unravel the future of portable charging.

🥇 Our Pick

Portable Charger

Portable Charger Image

  • Micro USB
  • USB Type C
  • 20000mAh

Buy now – $49.99 (Amazon)

🥈 Runner up

Power Bank

Power Bank Image

  • 65W Charging
  • USB Type C/A
  • 20000mAh

Buy now – $49.99 (Amazon)

🥉 Recommended

Portable Charger

Portable Charger Image

  • USB Type C
  • USB Type A
  • 20000mAh

Buy now for $28.91

What to Consider When Buying 20,000mAh Power Banks?

  • Capacity: Ensure that the power bank indeed has a 20,000mAh (or 20Ah) capacity, which can provide multiple charges for most smartphones.
  • Charging Speed: Consider the output wattage. A higher wattage (e.g., 65W) will charge devices faster than a lower one.
  • Ports: Check the types and number of ports. A variety like USB-C, Micro USB, and USB Type A can cater to different devices.
  • Simultaneous Charging: Some power banks allow you to charge multiple devices at once. This is especially helpful when traveling or for emergency situations.
  • Build and Design: Opt for a sturdy design, preferably with an aluminum or hardened plastic casing, which can withstand occasional drops.
  • Price: Determine your budget. While high-quality power banks might be pricier, there are good options available at various price points.
  • Brand Reputation: Stick to renowned brands with positive user reviews to ensure reliability and longevity.
  • Additional Features: Look for features like LED indicators, fast charging technology, and safety mechanisms against overcharging.

Tip: Remember, a power bank’s efficiency decreases over time. It’s essential to choose a reliable brand with good warranty terms to maximize longevity.

5 BEST 20000mAh Power Banks

1. Anker Portable Charger

Anker Portable Charger


  • Ultra-High Capacity
  • Advanced Technology
  • Simultaneous Charging
  • Versatile Recharging
  • Warranty Included

Anker’s PowerCore 20K offers a massive 20,000mAh capacity, advanced charging tech, and the ability to charge multiple devices simultaneously. With both USB-C and Micro USB input ports, it’s versatile and reliable.

2. Baseus Power Bank

Baseus Power Bank


  • 65W Power
  • Colossal Capacity
  • 3-Device Charge
  • Ingenious Design
  • 60W Recharge

Baseus’ 20,000mAh power bank boasts an impressive 65W PD output, making it capable of charging even laptops. With the ability to charge three devices simultaneously and a precise LED charge indicator, it’s both functional and user-friendly.

3. INIU Portable Charger

INIU Portable Charger


  • Fast Charging
  • USB-C In/Out
  • Triple Ports
  • Mini Devices
  • 3-Year Warranty

The INIU Portable Charger, a leading 20,000mAh power bank, boasts rapid charging capabilities for both phones and iPads. Its unique triple-port design and ability to charge smaller devices set it apart. The industry-leading 3-year warranty speaks volumes about its reliability.

4. LILIO Portable Charger

LILIO Portable Charger


  • Ultra-Fast
  • LED Display
  • Dual Port
  • Cozy Touch
  • Pocket-Sized

Fast-charging and stylishly slim, LILIO’s 20,000mAh power bank keeps multiple devices juiced up. Its LED display and dual ports make it a convenient travel companion, ensuring you’re always powered on-the-go.

5. Coolreall Small Power Bank

Coolreall Small Power Bank


  • Quick Charging
  • Ultra Compact
  • LED Display
  • Wide Compatibility
  • Triple Outputs

Unprecedented high-speed charging and compact size. Coolreall offers a powerful 20,000mAh (approx. 78.3Wh) capacity with accurate LED display. Perfect for modern devices.

20,000mAh Power Bank FAQs

Q: What does 20,000mAh mean?

A: 20,000mAh stands for milliampere-hours, a unit of electric charge. It indicates the total amount of energy that a power bank can store. A 20,000mAh power bank can theoretically charge a 2,000mAh device ten times before needing a recharge.

Q: How long does it take to fully charge a 20,000mAh power bank?

A: The charging time varies depending on the input capacity and the power source. Generally, a 20,000mAh power bank takes between 6 to 12 hours to fully charge using a standard 2A charger.

Q: How heavy is a typical 20,000mAh power bank?

A: A 20,000mAh power bank typically weighs between 350 to 500 grams (approx. 12.3 to 17.6 ounces) depending on its build and design.

Q: Can I carry a 20,000mAh power bank on an airplane?

A: Yes, most airlines allow carrying power banks in carry-on luggage. However, there might be restrictions based on the Watt-hour (Wh) rating. It’s always good to check with your airline and local regulations before traveling.

Q: How many charge cycles does a 20,000mAh power bank typically have?

A: A quality 20,000mAh power bank can typically last for 300 to 500 charge cycles before its capacity starts to degrade.

Jim Beckett is all about the pulse of tech. He’s got an uncanny knack for sniffing out the freshest gadgets, the underground tech scenes, and the digital revolutions just around the corner. Off the keyboard, you might catch Jim geeking out over the latest VR games or hunting down rare retro tech collectibles.