Electronics & Gadgets

9 Best 20000mAh Power Bank 2024 – Editor’s Top 9 Picks & Reviews

best 20000mAh power bank
Written by Kane Dane
Best Choice
Anker 20,100mAh Portable Charger, Ultra High Capacity Power Bank with 4.8A Output and PowerIQ...
Don't Miss
Anker PowerCore II 20000, 20100mAh Portable Charger with Dual USB Ports, PowerIQ 2.0 (up to 18W...
Anker 20,100mAh Portable Charger, Ultra High Capacity Power Bank with 4.8A Output and PowerIQ...
Anker PowerCore II 20000, 20100mAh Portable Charger with Dual USB Ports, PowerIQ 2.0 (up to 18W...
Best Choice
Anker 20,100mAh Portable Charger, Ultra High Capacity Power Bank with 4.8A Output and PowerIQ...
Anker 20,100mAh Portable Charger, Ultra High Capacity Power Bank with 4.8A Output and PowerIQ...
Don't Miss
Anker PowerCore II 20000, 20100mAh Portable Charger with Dual USB Ports, PowerIQ 2.0 (up to 18W...
Anker PowerCore II 20000, 20100mAh Portable Charger with Dual USB Ports, PowerIQ 2.0 (up to 18W...

My job requires me to travel a lot, take hundreds of photos and videos daily, and edit them on the go. I am also a frequent blogger so I am also writing a lot, even during my travels.

So, naturally, I need to carry a power bank to keep my phone, laptop and iPad (that I carry occasionally) charged at all times. And after some trial and error, and some calculations, I figured I should carry a power bank with at least 20000 mAh back up.

After going through a lot (and I mean a lot) of power banks of different capacities and brands, I have established a list of the best 20000mAh power banks.

The Ultimate List of Top 9 Best 20,000mAh Power Banks to Keep Your Gadgets Going

If you have been researching for a detailed review on power banks to make a purchase that is worth your money, read on. I have personally used each of these power banks and will not only share what’s mentioned on the packaging but also my personal experience with them, along with what I liked about them and what I hated.

So, without any specific order, let’s just get into this:

#1. Anker PowerCore – The Powerful 20100 mAh Power Bank


Weighing a little over 12oz, the PowerCore is portable, lightweight and powerful. With a capacity of over 20000, or 20100 to be exact, this power bank can easily last you through a day with enough charge to spare. Although this calculation can vary for you depending on the devices you carry and the size of their batteries. For instance, I found that a fully charged PowerCore was enough to juice my Macbook Pro only once.

This power bank does not support Qualcomm fast charging, but it does charge devices relatively quicker than a regular wall charger, thanks to its VoltageBoost technology. Using a regular 2 amp power brick the PowerCore can be charged from 0 to 100 in about 10 hours. It is a long time but since I charged it while sleeping, the time never bothered me much.

In length, it’s about as long as an iPhone 8 plus, which means you can also fit it in your pocket easily. It has 2 USB ports for output. This means you can charge two devices at the same time if need be. It’s available in four colors, including my favorite, blue, and comes with a travel pouch, in case you are that person that requires it.

  • Its lightweight and small size make it perfect for daily carry
  • Can be bought in any of the four amazing colors
  • Has two output ports to help you simultaneously charge two devices
  • Comes with an 18-month warranty and a travel pouch
  • Supports quick charge
  • Takes almost 10 hours to fully charge from 0
  • A USB type C cable is not included in the box, neither is a wall charger for charging it
  • Does not support Qualcomm fast charging

#2. The EasyAcc Portable Charger


A second generation power bank from EasyAcc, this one has a capacity of 20000 mAh. It costs about $35 bucks and seems to build sturdily. The in-built flashlight is perfect for camping trips or car breakdowns in the middle of nowhere.

It has four output ports. Yes! You read that right. But that’s not what’s unusual about this power bank. What’s abnormal is that it has two input or charging ports. While it does take up more space on your wall socket, the two input ports help you charge the device in just under 6 hours. This does not mean that a single port cannot be used to charge it. However, it would take longer that way.

It comes in three color variants with black being primarily present in all of them. The color options are only for the accents. And some color options may set you back a dollar more on the price. It weighs about a lbs and is the size of a regular smartphone, only a little thicker and less wider.

  • Takes only 6 hours to fully charge
  • Has four USB ports which can help in charging more devices at once
  • Comes with a built-in LED powered flashlight for emergencies
  • Has a safety protection feature that prevents any device from overcharging
  • Charges any device at twice the speed of a computer’s USB port
  • Requires a double USB port power brick or can take up two wall sockets to fast charge
  • With the total weight of 1 lb it is a bit on the heavier side
  • A USB type C cable has to bought separately

#3. RAVPower Portable Power Bank


This portable power bank and the two I mentioned previously share a lot of similarities, albeit there are a couple of noteworthy differences here as well. The biggest difference is the power level LED display. The display also shows the charging level when it is connected to a power socket.

Another noticeable difference here are the three output ports and two input ports. The three output ports include a USB 2.0 port, a USB 3.0 port with Qualcomm charging support and a USB type C port with 18w fast charging support. The input ports include a micro USB and a USB type C. So, in terms of connectivity, this one is off the hook.

I don’t know what is it with the manufacturers but even this one doesn’t come with a type C or a lightning cable. All you get a run-of-the-mill micro USB cable.

  • The device is completely future-proof thanks to its multiple types of input and output ports
  • It supports Qualcomm fast charging and also has 18w two-way power capability
  • There’s an LED display to conveniently show the current status of the power bank
  • Thanks to the type C lightning port the power bank can be fully charged in a couple of hours
  • Doesn’t weigh more than an average cellphone and can be easily carried
  • Does not ship with a USB type C to type C cable
  • The device seems to be a little chunky when compared to other similar capacity power banks
  • The first few charges can take a rather long time

#4. EC Technology Portable Power Bank Ultra High Capacity 3 USB Output


Okay, I’ll start by saying, for the price, this is the most battery capacity you can get. Apart from that, it has a 2A port to charge the power bank itself. While the box says 2A is fast charging, it has certainly become a standard in most electronic devices and shouldn’t be confused with fast charging enabled.

The power bank is certified safe by the manufacturer and is capable of automatically disconnecting power, in case of over-charging or over-voltage. The safety certification also allows it to be carried between flights.

It doesn’t support Qualcomm charge but has the capability of fast charging multiple devices thanks to its three 5.5A USB output ports. You also get a 12-month manufacturer’s warranty, and two micro USB cables for charging the device. Oh yeah! It also has an LED flashlight.

  • It’s safety certification allows it to be carried on planes, making it convenient for travelers
  • All three output ports deliver the 5.5A power, charging your devices faster
  • It has a huge capacity compared to the devices in the same price range
  • The built-in safety chip keeps all the devices from being overcharged and the power bank itself from being overheated
  • It also has a flashlight for those unforeseen emergencies
  • The power bank can take forever to get a 100% charge
  • USB type C port is missing on this one
  • The built quality feels very cheap and can cause problems, like the power button getting stuck, now and then

#5. The PowerCore II from Anker


Another entrant from Anker, this is the newer version of their famous PowerCore. Apart from the many additional features, it also has a more expensive price tag which could feel a little steep to some.

Weighing a whole ounce less than its predecessor, the PowerCore II is also a lot less wider. It also has a little less capacity than the original PowerCore. 100mAh to be exact. It has two smart USB power output ports, 18w and 15w respectively.

Thanks to Anker’s new PowerIQ 2.0 technology, the power bank can be charged a 100% in just 5 hours. It also has power level indicator LEDs. The body is made of rugged plastic to provide a better grip in hands, and to keep it from slipping when placed on smoother surfaces. It can be bought in two colors, namely black and white.

  • Can be charged quicker than its predecessor
  • The new PowerIQ technology-enabled ports can automatically detect ideal charging speed for individual devices
  • Has a rugged plastic body that offers extra grip in hand and on smooth surfaces
  • It’s available in two different colors
  • Has an eight-light LED ring which indicates the current charge status
  • The white color can set you back a couple of extra bucks
  • The rugged plastic body is a dirt magnet, especially if you own a white one
  • The fast charging is not compatible with certain Apple devices and some USB type C devices

#6. POWERADD EnergyCell Portable Power Bank


With its elegant physical appearance, compact size and 20000 mAh battery, the EnergyCell by POWERADD is geared toward the frequently traveling business people. The fact that it also meets all the international flying regulations also reaffirms this.

It has three ports, 2 USB and 1 USB type C which is 18w PD enabled for faster charging. The same type C port is also used for charging the power bank. It has a four LED power status indicator at the top. It has a chip installed in it that can automatically sense the charging current required for any device and adjust itself accordingly.

Unfortunately, the fast charging is only supported on the 18w PD port on the power bank. Also, if you wish to charge the power bank faster, you need to buy an 18w charger separately. The good news is, it comes with a 24-month warranty, a traveling pouch to carry it in, and a very favorable price tag.

  • Very compact in size and has attention-grabbing looks
  • Supports 18w fast charging for USB type C devices
  • Meets all the requirements of international traveling
  • Has power status indicating LED lights
  • Can be bought for an amazingly affordable price
  • Fast charging cable isn’t supplied in the box and has to be bought separately
  • The two USB ports do not support fast charging
  • Can take forever to charge on a standard charger

#7. RAVPower Portable Power Bank – 16750mAh


Okay, so the last one on the list isn’t a 20000mAh power bank. Nonetheless, it is worth mentioning. RAVPower offers this one in four colors. Appearance-wise, it is more flatter and wider.

With its two power output USB ports, a 4.5A and 2.4A, this power bank is only suitable for smartphones and devices that are at least a year old. There’s no Qualcomm quick charge support here and neither is a USB type C port available. The power bank also takes up to 9 hours to fully charge, using a 2.4A power adapter.

This one also has a built-in LED flashlight and comes with two micro USB cables for charging the device and a pouch to carry it in. It isn’t very expensive but that reflects in its built quality.

  • Has a matte finish body so it doesn’t attract fingerprints and can resist lighter scratches
  • Has two USB ports with different power outputs to suit most devices
  • Comes in four colors and with 18-month warranty
  • Has LED flashlight that also doubles as a power indicator
  • Ships with an extra charging cable just in case you lose one
  • USB type C and Qualcomm fast charging support are missing here

How to Pick the Right 20,000mAh Power Bank for Your Gadgets –  The Ultimate Buyer’s Guide

I hope you find all this information useful and make the right decision when purchasing a power bank for yourself. However, this list of best 20000mAh power banks will only be useful to you if you have some basic understanding of what you actually need. If you have no idea, this power bank buyer’s guide will help you out.

Power Output

As I stated at the very beginning of this article, before you start searching for a power bank, you need to determine how much power you require. Take a look at the devices you travel with or you want to get the power bank for and add up their battery capacities to have an accurate answer. For most people, 20000mAh is more than enough.

The Number of Output Ports

Now that you have the capacity in mind, you need to create different scenarios to understand how many devices you would be charging, with that power bank, at once. Two output ports are more than enough for an average person. But you can also get power banks with up to four ports for convenience. Choose wisely!

Qualcomm Quick Charge Support

Many recently released smartphones, tablets, and laptops are supported for Qualcomm quick charge technology. While the majority of old, even flagship devices aren’t. Carefully research your devices and their capability of fast charging before jumping to a decision.

USB Type C Support

This one is connected to Qualcomm’s quick charge technology in a major way. Since Qualcomm’s quick charge is only supported on devices that have USB type C connectivity, deciding on this one shouldn’t be that difficult. To make it simpler, almost all flagship devices released after 2017 have type C support.

Apple Device Support

If you are looking to buy a power bank for one or all of your Apple devices, make sure the power bank you choose supports them. For some strange reason, certain power banks do not work with Apple devices. But this information can easily be found on the product description page or its packaging.

Acceptability on Flights

This one is really important. If you are a frequent flyer and your travels are one of the reasons for buying a power bank, you need to confirm that your chosen power bank conforms to all regulations related to carrying it in flight.

Final Thoughts

By now, I am hoping that I have helped you in reaching a good enough decision. If you do not have any defined specifics and just need a power bank to help you last through the day, or a week if you buy a 20000mAh one, always go for the cheapest option.

But if you have specific needs and this is one of those make it or break it decisions for you, I am sure that at least one will suit your needs from my best 20000mAh power banks list. If that is indeed the case, I request you to make the purchase using one of my links. Doing so will help me earn a small commission and encourage me to share more such articles for you guys. Bye!


About the author

Kane Dane