Skip to content

The Ultimate Guide to High-Capacity Power Banks: Powering Your Digital Life

As our lives become increasingly digital, mobile, and connected, one thing is certain: we‘ve never been more reliant on our electronic devices. And that means we‘ve never been more in need of reliable, portable power solutions. Enter the high-capacity power bank – the unsung hero of the mobile era.

As an expert on mobile technology with over a decade of experience covering the latest and greatest in gadgets, I‘ve had my hands on hundreds of power banks. I‘ve seen the good, the bad, and the underpowered. In this ultimate guide, I‘ll be sharing my top picks for the most powerful, high-capacity power banks on the market today, along with expert tips on how to choose and use them.

Why High-Capacity Power Banks Are a Must-Have

Before we dive into the specifics, let‘s take a step back and look at why high-capacity power banks have become such an essential accessory.

Consider these statistics:

  • The average American spends over 5 hours per day on their smartphone (source)
  • 70% of smartphone users say their device is an essential part of their daily routine (source)
  • The global portable power bank market is projected to grow from $15.6B in 2021 to $24.5B by 2028 (source)

In other words, we‘re using our devices more than ever, and the demand for portable charging solutions is skyrocketing. And while a small, pocket-sized power bank may suffice for a quick top-up, high-capacity chargers offer the peace of mind that comes with knowing you have days (or even weeks) of extra charging power at your disposal.

How to Choose a High-Capacity Power Bank

With so many options on the market, choosing the right high-capacity power bank can be overwhelming. Here‘s what to look for:


Measured in milliamp-hours (mAh), capacity tells you how much charging juice a power bank holds. As a general rule, higher capacity = more charges. But there are other factors to consider, like efficiency and battery type. Roughly speaking:

  • 10,000 mAh = 2-3 phone charges
  • 20,000 mAh = 4-6 phone charges
  • 26,800 mAh = 5-7 phone charges
  • 50,000 mAh = 10+ phone charges

Output Power

Indicated by the wattage (W) of the ports, output power determines charging speed. The key standards to look for are:

  • USB-C Power Delivery (PD): Can deliver up to 100W, suitable for fast charging phones, tablets, and laptops
  • Quick Charge (QC): Charges compatible Android phones up to 4X faster than standard USB
  • USB 3.0: Provides fast data transfer but typically limited to 5-12W charging output

For fastest charging, opt for a power bank with PD and/or QC support.

Size and Weight

High capacity comes at a cost in size and weight. Some 50,000 mAh models weigh nearly 3 lbs! Consider how you‘ll be carrying your power bank – if it‘s primarily for air travel, size matters.

Battery Type

The two main battery types used in power banks are lithium-ion (Li-ion) and lithium-polymer (Li-poly). Li-ion batteries have a higher energy density (more capacity for the size), while Li-poly batteries are more stable and less prone to overheating. Both are suitable for high-capacity applications.

Extra Features

A few other features worth considering:

  • Digital display to show remaining capacity
  • Pass-through charging (ability to charge devices while the power bank is being charged)
  • Built-in cables and/or AC wall prongs for charging the power bank
  • Wireless charging

With those criteria in mind, let‘s take a look at my top picks.

The 5 Best High-Capacity Power Banks

I‘ve personally hands-on tested dozens of high-capacity power banks from all the major brands. Here are my top 5 picks for performance, design, and value:

Power Bank Capacity Weight Key Outputs Price
Zendure SuperTank Pro 26,800 mAh 20.5 oz 2X 100W USB-C, 2X QC USB-A $229
MaxOak 50000mAh Power Bank 50,000 mAh 2.8 lbs 4X USB-A, 2X DC $136
RAVPower 80W AC Power Bank 27,000 mAh 1.5 lbs 80W AC, 30W USB-C, QC USB-A $129
Crave Plus Pro 40000mAh 40,000 mAh 1.5 lbs 60W USB-C, QC USB-A $99
Anker PowerCore Essential 20000 20,000 mAh 12.2 oz 18W USB-C, USB-A $50

1. Zendure SuperTank Pro

The SuperTank Pro from Zendure is hands down the most advanced high-capacity power bank I‘ve tested. It boasts an industry-leading 100W USB-C output, allowing it to fast charge even power-hungry laptops like the MacBook Pro.

Key Specs:

  • Capacity: 26,800 mAh
  • Dimensions: 4.9 x 2.9 x 1.6 in
  • Weight: 20.5 oz
  • Outputs: 2X USB-C (100W PD), 2X USB-A (18W QC)
  • Pass-through charging: Yes
  • Extras: OLED display

The SuperTank Pro‘s sleek, durable aluminum body is a marvel of engineering. At 20.5 oz, it‘s relatively hefty, but still compact enough to slip into a backpack. Its high-res OLED display is a cut above the basic LED displays on most power banks.

While it‘s pricey at $229, you‘re getting top-of-the-line performance and quality. If you‘re a digital nomad or creative professional who needs to keep multiple devices powered on the go, the SuperTank Pro is well worth the investment.

2. MaxOak 50000mAh Power Bank

At the opposite end of the size spectrum, the MaxOak 50000mAh is an absolute beast of a battery. Packing enough juice to charge a smartphone 10-18 times, this is the power bank for serious charging endurance.

Key Specs:

  • Capacity: 50,000 mAh
  • Dimensions: 8.1 x 5.3 x 1.3 in
  • Weight: 2.8 lbs
  • Outputs: 4X USB-A (2.4A max), 2X DC (12/16/19V)
  • Pass-through charging: No

The MaxOak‘s 50,000 mAh capacity is among the highest you‘ll find in a consumer-grade power bank. However, that capacity comes with considerable bulk – at nearly 3 lbs, this is more of a desktop power station than an on-the-go accessory.

But if you need a reliable charging companion for a long trip off the grid, the MaxOak is up to the task. Its dual DC outputs can even power small appliances like mini-fridges and CPAP machines.

3. RAVPower 80W AC Power House

For the most flexibility in charging options, check out RAVPower‘s 80W AC Power House. It‘s one of the few power banks to feature a built-in AC wall outlet, opening up a world of charging possibilities.

Key Specs:

  • Capacity: 27,000 mAh
  • Dimensions: 5.1 x 4.1 x 1.5 in
  • Weight: 1.5 lbs
  • Outputs: 110V/80W AC, 30W USB-C PD, QC 3.0 USB-A
  • Pass-through charging: Yes

With its AC outlet, the RAVPower can charge a much wider variety of devices compared to USB-only models – from laptops to cameras to portable speakers. And it delivers that power quickly, with 80W AC output and 30W USB-C PD.

Design-wise, the RAVPower is utilitarian but well-constructed, with a rugged housing and informative LED display. It‘s on the larger side for its capacity, but still reasonable to pack for a weekend trip.

4. Crave Plus Pro 40000

Looking for a high-capacity power bank that won‘t break the bank? The Crave Plus Pro offers an impressive 40,000 mAh for under $100, making it one of the best value picks on the market.

Key Specs:

  • Capacity: 40,000 mAh
  • Dimensions: 7.3 x 4.7 x 1.2 in
  • Weight: 1.5 lbs
  • Outputs: 60W USB-C PD, 18W QC 3.0 USB-A
  • Pass-through charging: Yes

The Crave Plus Pro punches above its price class with a 60W USB-C PD port capable of fast charging laptops and a Quick Charge 3.0 USB-A port for speedily topping up phones. Its 40,000 mAh capacity provides enough power to fully charge a laptop and keep your phone and tablet topped up for days.

While not as stylishly designed as some pricier models, the Crave Plus Pro is solidly built and comes with a handy carrying case. It‘s an excellent choice for budget-conscious power users.

5. Anker PowerCore Essential 20000

If portability is a priority, the Anker PowerCore Essential 20000 delivers a hefty 20,000 mAh capacity in a surprisingly compact package. It‘s my go-to power bank for everyday carry.

Key Specs:

  • Capacity: 20,000 mAh
  • Dimensions: 5.9 x 2.7 x 0.8 in
  • Weight: 12.2 oz
  • Outputs: 18W USB-C PD, 12W USB-A
  • Pass-through charging: Yes

Anker has a well-earned reputation for high-quality, reliable charging accessories, and the PowerCore Essential 20000 is no exception. Despite its small size, it packs an 18W USB-C port for fast charging phones and tablets.

The tuxedo black design is classic Anker – simple, sleek, and durable. And at just over 12 oz, it‘s light enough to forget you‘re carrying it. For a solid all-around performer at an affordable price, the PowerCore Essential 20000 is hard to beat.

Power Bank Frequently Asked Questions

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

This depends on your phone model and battery size, but as a general estimate:

  • iPhone 12: 4-5 charges
  • Samsung Galaxy S21: 3-4 charges
  • Google Pixel 5: 4-5 charges

Can I bring a high-capacity power bank on a plane?

Lithium batteries are regulated as hazardous materials on aircraft. Most airlines and the TSA limit power banks to a maximum of 27,000mAh (100 watt-hours). So if you‘re planning to fly with a larger capacity model, be sure to check regulations first.

How can I tell if my device supports fast charging?

Look for these fast charging standards in your device‘s specs:

  • USB Power Delivery (USB PD)
  • Qualcomm Quick Charge
  • Samsung Adaptive Fast Charging
  • Motorola TurboPower
  • OnePlus Warp Charge

How can I make my power bank last longer?

To maximize your power bank‘s lifespan:

  • Avoid extreme temperatures – don‘t leave it in a hot car
  • Don‘t let the battery fully drain before recharging
  • Use at least once every 3 months to keep the battery active
  • Charge to about 60% before long-term storage
  • Use official or reputable third-party charging cables

The Future of Portable Power

As impressive as today‘s high-capacity power banks are, there‘s still plenty of room for improvement. Here are some of the charging technologies and trends I‘m excited about:

Gallium Nitride (GaN) Chargers

GaN is a semiconductor material that enables smaller, more efficient chargers. We‘re already seeing power banks take advantage of GaN to shrink size and boost output – the Zendure SuperTank Pro being a prime example. As the technology matures and becomes more affordable, I expect GaN to revolutionize portable chargers.

Graphene Batteries

Graphene is a wonder-material composed of a single layer of carbon atoms. When used in batteries, it enables higher capacities, faster charging, and longer lifespans compared to traditional lithium-ion cells. While graphene batteries are still in the early stages of development, they could be a game-changer for high-capacity power banks in the coming years.

Wireless Power Banks

With Apple, Samsung, and other major players now supporting wireless charging in their phones, I predict we‘ll see more power banks follow suit. Cutting the cord could be a major convenience upgrade, especially for on-the-go charging. Imagine a power bank that magnetically attaches to the back of your phone and charges it wirelessly – no cables required.

As our devices continue to evolve, so too will the portable batteries that keep them running. While high-capacity power banks are more necessity than luxury for many of us today, I‘m hopeful that advancements in charging tech will yield smaller, lighter, and more efficient solutions in the near future. Until then, the models featured here are the best of the current bunch – road-tested and ready to power your digital life, no matter where it takes you.