Best 20000 mAh Power Banks

It’s time to bring out the big guns. Charging Kick has already listed the best small power banks and 10,000 mAh power banks. While a small or medium-sized power bank can be fine for daily usage, it might not be enough for a trip where a power outlet won’t be easily accessible. Alternatively, you might need a big battery to charge not only your phone but also an iPad or camera. Smaller power banks can’t supply enough energy for this.

Every reputable power-bank manufacturer offers a 20,000 mAh battery. The question is, which one is the best and will meet all your requirements? The big power banks usually offer more advanced features such as laptop charging or simultaneous charging. Therefore, a big power bank can be a highly versatile product that can be used in multiple situations.

We have tested dozens of power banks and considered multiple features to choose the best 6 on the market! Read on to find the one that will work for you.

Top Pick

RAVPower Portable Charger 20000mAh PD 3.0 18W

RAVPower’s power bank provides everything a high-end 20,000 mAh battery should have: a high-quality battery, fast-charging, 4 ports, the latest technology, and an LED screen battery indicator.

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Here Are Best 20000 mAh Power Banks

Here is the list of 6 the best 20000 mAh power banks on the market.

RAVPower Portable Charger 20000mAh PD 3.0 18W

With almost ten thousand reviews with an average 4.8 rating, the RAVPower 20000 mAh is one of the most popular power banks on Amazon. This power bank has 4 ports, fast-charging, and an LED screen battery indicator, to name a few of its features. To find out how good this power bank truly is, read on.

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Pros & Cons:

Pros:

• 4 USB ports

• Simultaneous charging of up to 3 devices

• High-end materials

• Fast-recharging and charging

• LED screen battery indicator

Cons:

• Heavy

Rating

Power & Performance (1 to 5 stars)

Design & Build (1 to 5 stars)

Technology (1 to 5 stars)

Overall Rating (average of above)

Key Info:

• Capacity: 20000mAh / 74 Wh

• Weight: 15.7 oz / 445 g

• Dimension: 6.2 x 2.9 x 0.59 in / 15.8 x 7.4 x 1.5 cm

• Average Charging Time (3000mAh Battery): 1 hour and 20 minutes

• Average Recharging Time: 6 hours

• Ports: USB-C, 2xUSB-A, Micro USB

• Charging Technology: Quick Charge 3.0, Power Delivery (PD)

• Flight Status: Under 100 Wh. Safe to take on board.

RAVPower always produces products with high-tech features and modern and stylish designs. This one has more than ten thousand reviews on Amazon with an average rating of 4.8 – living proof of another excellent device from RAVPower.

This sizeable device weighs almost 16 ounces (445g) and has roughly the same dimensions as a Samsung Galaxy S20. It’s one of the heaviest and biggest power banks on this list. It’s a trade-off for extra features that the competitors’ power banks don’t have.

Usually, heavier devices are built with more durable materials, and this device proves it . It’s constructed with a highly durable UV shell that protects against scratches from sharp objects. Furthermore, you won’t find fingerprints, lint, or dust on this device. The power bank has a sleek and modern design. It’s nice to touch, with a soft coarse top layer that makes it easy to grip.

What makes this device more convenient to use is its LED screen battery indicator. The screen shows the exact power level of the battery pack. That’s not all. When a mobile phone is charging, the display indicates the charging speed; the double-lightning bolt symbol indicates fast-charging. Furthermore, when the power bank charges, the numbers on the screen flash. For this battery capacity, a LED screen should be standard, but in most devices, it’s not.

The RAVPower 20000 is equipped with USB ports that allow you to charge up to 3 devices simultaneously. It can be recharged either via USB-C or Micro USB. For charging, you have at your disposal 2 USB-A ports (iSmart and Quick Charge 3.0) that can charge your devices at the highest speed. The USB-C port (equipped with Power Delivery technology) can be used for charging devices and recharging the device itself. As long as you have one USB-C to USB-C cable, you’ll be able to use it for all purposes (unless you use an iPhone, in which case you’ll need a Lightning connector).

The charging and recharging speeds are top-notch. Mobile phones with 3,000 mAh batteries will get a full charge within 80 minutes, while bigger phones such as the Samsung Galaxy S20 should get full battery within 2 hours. The power bank detects most mobile phones with fast-charging technologies. The battery should be enough to charge most phones 3-4 times.

The manufacturer claims recharging speed is within 6 hours. It’s an impressive result and can be only accomplished using a fast-charging charger with at least 18W output. Otherwise, recharging takes 10-11 hours.

This is an excellent battery at a reasonable price. Its 4 ports, an efficient battery, LED screen battery indicator, and durable materials add up to a high-end product. If you’re looking for a versatile and high-quality product that will last for years, the RAVPower Portable Charger 20000mAh won’t disappoint.

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RAVPower Portable Charger 20000mAh 60W

How cool would it be to charge your laptop when you’re away from a power outlet? Fortunately, the RAVPower Pioneer 20000 is here to serve you. Its 60W output power can charge compatible laptops such as MacBooks, not to mention your phone. Read on to learn more.

Read full review of RAVPower Portable Charger 20000mAh 60W

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Pros & Cons:

Pros:

• Laptop charging compatibility (but not all laptops, check first!)

• Solid output charging speed

• Simultaneous charging with a total output of 60W when powering two devices

• USB-C port for input and output charging

Cons:

• It doesn’t recharge within 3 hours as promised, but needs 9 hours on average

• Only 2 USB ports

• Heavy

Rating

Power & Performance (1 to 5 stars)

Design & Build (1 to 5 stars)

Technology (1 to 5 stars)

Overall Rating (average of above)

Key Info:

• Capacity: 20,000 mAh / 72.6 Wh

• Weight: 13.11 oz / 371.7 g

• Dimension: 5.96 x 2.62 x 0.98 in / 15.1 x 6.6 x 2.5 cm

• Average Charging Time (3000mAh Battery): 1 hour and 30 minutes

• Average Recharging Time: 9 hours and 35 minutes

• Ports: USB-A, USB-C PD (Input and Output)

• Charging Technology: PD charging, substantial output to charge compatible laptops

• Flight Status: Under 100 Wh. Safe to take on board.

RAVPower is one of the most reputable companies in the battery world. The RAVPower Portable Charger 20000mAh 60W includes the best of this company’s offerings: cutting-edge technology, modern design, and versatility.

This 14-ounce battery has 20000 mAh of energy to use, which is enough to charge most mobile phones 3 or 4 times. It’s relatively small for a battery of this capacity, but not small enough to keep in your pocket while it’s charging your phone.

The Pioneer 20000 is made of smooth and solid plastic. It’s pleasant to the touch and sits firmly in your hand. Every part stays firmly together. It’s durable enough for daily usage. It will work well for someone who needs a big battery to charge a phone multiple times or/and charge a laptop. Yes, you read that correctly, this power bank can charge compatible laptops.

On the edge of the unit are four LED lights, each indicating 25% of battery life. The power button is just below the lights. The power bank has two USB ports: USB-A for output charging and USB-C for input and output charging. Compared to similar power banks, it’s lacking at least one more port. However, the quality of these is the highest you can get. The USB-A has iSmart technology and can deliver fast charging for compatible phones. Add to that USB-C, which can deliver up to 60W of power, and you have enough juice to charge compatible laptops, not to mention phones. After all, how often do you need to charge 3 devices at the same time? If you can charge two devices at their highest speeds, including a laptop, can you really complain?

Here at Charging Kick, we test every device we review. The RAVPower Pioneer 20000 performs almost as well in reality as it does on paper. On average, the power bank can charge phones with 3000 mAh batteries within 90 minutes; for phones with 4000 mAh batteries, it takes 2 hours. These are solid times. Since this power bank can also charge laptops, we used a 13-inch Macbook Pro for testing. It took 4 hours and 30 minutes to charge it from 1% to 100%. Not as fast as the standard wall charger, but still a good time. What’s more, there was still 3,000 mAh left to use in the power bank!

The manufacturer promises a 3-hour recharging time that, in our testing, seemed to be unreachable. To achieve this time, a wall charger with at least 30W output is needed. As advised, we charged the power bank using the RAVPower USB C Charger 65W PD. It took over 9 hours to charge the power bank. That’s nowhere close to the advertised time but is still in line with the standard charging time for a battery of this capacity.

Overall, the RAVPower Pioneer 20000 is a truly powerful and versatile power bank. Its fast-charging and laptop compatibility makes this battery a great all-around power bank for those who want to charge various devices.

Read full review of RAVPower Portable Charger 20000mAh 60W

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ROMOSS PD Power Bank 20000mAh, 18W Quick Charge

A cheap power bank with unique solutions, fast-charging, and multiple ports – is it possible? The ROMOSS Power Bank 20000 mAh provides an answer. With over 3000 reviews on Amazon with an average rating of 4.5, it’s one of the most popular power banks out there. Read on to find out more.

Read the full review of ROMOSS PD Power Bank 20000mAh

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Pros & Cons:

Pros:

• 5 USB Ports

• Tri-Input-Output

• Simultaneous charging of up to 3 devices

• Fast-charging and recharging

• LED screen battery indicator that also shows charging voltage and current

• Original design

Cons:

• Heavy

Rating

Power & Performance (1 to 5 stars)

Design & Build (1 to 5 stars)

Technology (1 to 5 stars)

Overall Rating (average of above)

Key Info:

• Capacity: 20000 mAh / 74 Wh

• Weight: 15.3 oz / 433 g

• Dimension: 5.9 x 2.7 x 1.1 in / 14.9 x 6.9 x 2.8 cm

• Average Charging Time (3000mAh Battery): 1 hour and 25 minutes

• Average Recharging Time: 7 hours

• Ports: Micro USB, USB-C PD (Output and Input), 2xUSB-A, Lightning

• Charging Technology: Power Delivery (PD), Quick Charge

• Flight Status: Under 100 Wh. Safe to take on board.

ROMOSS is a new brand in the power bank world that manufactures quality products with original solutions. Its 20,000 mAh model has been welcomed on Amazon and generated thousands of positive reviews.

The battery has a capacity of 20,000 mAh and provides enough energy to charge most mobile phones 3-4 times. Due to its capacity, it isn't a small device about the size of a Samsung Galaxy S20 but is thicker and naturally heavier - 15.3 ounces (433 grams). It won’t be comfortable to keep in your pocket while it charges your mobile phone.

ROMOSS’s unique design stands out from the crowd. While most power banks are black, this one is only white, just like the brand’s other models. The big number 20 on its front indicates the battery capacity. The charger has a premium feel to it, as it has an aluminum shell – but it’s not rugged, so be careful not to drop it.

Another unique feature is its LED screen battery indicator. The screen itself isn’t a new solution and can be found in numerous devices. However, this screen not only shows the battery level but also the charging voltage and current. For those who are interested in the charging process, this feature is amazing. A blue sign appears when a Quick Charge or Power Delivery-enabled device is connected.

And there’s more. The ROMOSS PD Power Bank 20000mAh has 5 ports, which makes this device extremely versatile. Two USB-A ports and one USB-C are for output charging and can be used simultaneously, allowing you to charge up to 3 devices. The USB-C can also be used to recharge the device itself. However, if you don’t have a USB-C cable, you can use either Micro USB or Lightning. This abundance of options makes this device highly versatile.

The maximum output and input of this device is 18W, which means fast charging for mobile phones connected to the power bank and fast recharging of the device itself. If you charge one device using any port, you should receive a fast-charging speed. However, you won’t get fast charging if you charge more than one device. The charging times are standard time: 90 minutes for a 3,000 mAh battery and 120 minutes for a 4,000 mAh battery and above.

The manufacturer boasts about its fast recharging. While most power banks with 20,000 battery capacity need over 10 hours to recharge, ROMOSS’s power bank can do it in 7 hours, as long as you use an 18W wall charger. It’s an impressive result, better than most competing devices.

ROMOSS provides an original power bank at a reasonable price. Its original features, such as LED screens showing voltage and current or and five ports, set it apart from other power banks. Add to that its fast charging and recharging and unique design, and you get a high-end product for half the price of a top-of-the-line power bank.

Read the full review of ROMOSS PD Power Bank 20000mAh

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INIU Power Bank 20000mAh, 20W PD3.0 QC4.0

Can you get a power bank with the latest technology, 3 ports, fast-charging speed and LED screen battery indicator for a reasonable price? Yes, you can! INIU with its new power bank has it all.

Read the full review of INIU Power Bank 20000mAh

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Pros & Cons:

Pros:

• 3 USB ports

• Simultaneous charging of up to 3 devices

• The latest technology

• LED screen battery indicator

• USB-C for recharging

Cons:

• Low Watt output

Rating

Power & Performance (1 to 5 stars)

Design & Build (1 to 5 stars)

Technology (1 to 5 stars)

Overall Rating (average of above)

Key Info:

• Capacity: 20000mAh / 74 Wh

• Weight: 12.8 oz / 355 g

• Dimension: 5.3 x 2.8 x 1.0 in / 13.5 x 7.1 x 2.5 cm

• Average Charging Time (3000mAh Battery): 1 hour and 25 minutes

• Average Recharging Time: 7 hours

• Ports: USB-C, 2 x USB-A

• Charging Technology: Power Delivery 3.0 (PD), Quick Charge 4.0 (QC)

• Flight Status: Under 100 Wh. Safe to take on board.

INIU is a brand that provides high-quality products at a reasonable price. Its power banks are popular on Amazon and garner positive feedback – and this product demonstrates why INIU is getting so much love.

In this nicely designed portable charger, you get a high-quality 20,000 mAh battery. The product weighs only 12.8 ounces (355 grams), which makes it one of the lightest and smallest power banks on this list. For those who are backpacking and have limited space, this product is worth a look.

The power bank has a sleek, modern design. It’s built of high-quality plastic, robust enough for daily usage. The design and construction make it a high-end product. The power bank is available in black or white.

The LED digital screen battery indicator is a nice feature. INIU knows that four-light LED- battery indicators aren’t accurate, so all of its products include an LED digital screen. Their screen also shows charging speed (either standard or fast charging) and the charging status (out or in). Another extra feature is a small torch that emits a surprisingly bright light.

The INIU power bank is equipped with 3 ports. Two of them are USB-A ports with Quick Charge 4.0 technology, the most advanced one. The third port is USB-C with Power Delivery technology. This port can be used to charge external devices and to recharge the device itself. It’s a very impressive set of ports, enabling you to charge up to 3 devices simultaneously.

It’s time to get to the nuts and bolts: charging. The power bank has a maximum output of 20W, enough to charge one device at its maximum speed. The average phone with a 3,000 mAh battery should fully charge within 90 minutes. Two phones charged simultaneously will charge in 2 hours. The output isn’t high enough to provide fast charging to more than one device. The battery’s capacity should be enough to charge most phones 4-5 times.

Thanks to the USB-C’s 20W input, the power bank can be recharged even within 6-7 hours, as long as you use a compatible wall charger rated at 20W+. With a standard wall charger, it should take 11-12 hours to get a fully charged power bank.

The manufacturer is confident about its products and provides a three-year warranty.

Overall, if you decide to buy this product, you’ll get a good quality battery, the latest technology, the ability to charge most phones 4-5 times, an LED screen battery indicator, all packed into the lightest power bank available. Overall, this is a state-of-the-art power bank that sells for a reasonable price.

Read the full review of INIU Power Bank 20000mAh

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Anker PowerCore Essential 20000mAh

The Anker PowerCore Essential 20000 is the most popular Anker power bank on Amazon in the 20000 mAh category. It’s been continuously named the best seller. What makes this power bank so popular?

Read the full review of Anker PowerCore Essential 20000mAh

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Pros & Cons:

Pros:

• Supports simultaneous USB charging via USB-A ports

• Superb material quality and design

• 92% battery efficiency, one of the highest

• Charges most mobile phones 4 times

Cons:

• Simultaneous charging and recharging is not supported

• USB-C input only; no cable provided, only Micro USB / USB-A

• Doesn’t support laptop charging

• Does not support fast charge output to phones, only standard charge speed

Rating

Power & Performance (1 to 5 stars)

Design & Build (1 to 5 stars)

Technology (1 to 5 stars)

Overall Rating (average of above)

Key Info:

• Capacity: 20,000 mAh / 72 Wh

• Weight: 12 oz / 342 gm

• Dimension: 6.2 x 2.9 x 0.8 in / 15.8 x 7.4 x 1.9 cm

• Average Charging Time (3000mAh Battery): 1 hour and 20 minutes

• Average Recharging Time: 11 hours

• Ports: 2xUSB-A Output (5V/3A), USB-C Input (5V/2A), Micro USB Input (5V/2A)

• Charging Technology: PowerIQ, Fast-Charging via Leading Technology

• Flight Status: Under 100WH. Safe to take on board.

The Anker PowerCore Essential 20000 has been at the top of the podium for years. What makes this power bank so popular?

The power bank’s appearance is the traditional simple Anker design. The main material is solid and robust plastic. It has a matte finish that prevents smudges and fingerprints. The texture is comfortably coarse, allowing you to keep the device firmly in hand. There are two color selections: black and white.

The power bank weighs 12 ounces and has the dimensions of a 6-inch phone. It’s not the lightest or smallest power bank out there, but this is the nature of a battery. It might not be a comfortable device to keep in a pocket while charging your phone.

The power button and battery indicator are on the front. The power button is round and has four LED lights on it that indicate the battery level – a minimalistic and subtle solution. However, an LED digital screen displaying the battery level would have been better. For big power banks, LED lights are not enough.

The PowerCore Essential 20000 has 4 USB ports: 2 USB-A ports for output charging and one USB-C and one Micro USB for input charging. This meets the industry standard but lacks USB-C for output charging.

What about the charging capability and battery efficiency? In this case, the power bank performs very well. According to tests, the battery efficiency is 92%, which makes this battery the top quality. It can charge an average mobile phone with a battery of 3,000 mAh within 80 minutes. It’s a great time, even though the unit lacks the latest charging technologies. If you want to charge two phones simultaneously, the phones will fully charge in 2 hours, a solid time.

The recharging time is typical for this battery category and ranges from 11 to 12 hours if you use a charger rated at 2A.

The Anker PowerCore Essential 20000 is a solid power bank that has proved its worth over the years. Its great battery efficiency, multiple ports, robust materials, and minimalistic design make the PowerCore Essential 20000 a winner. Since this device has been on the market for a few years, it lacks features such as USB-C for output charging or an LED display battery indicator. However, if you’re not a technology geek and need a reliable and solid power bank, the Anker PowerCore Essential 20000 has everything you need.

Read the full review of Anker PowerCore Essential 20000mAh

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Anker PowerCore 20100

The Anker PowerCore 20100 is one of the most popular power banks sold and reviewed in recent years. What makes this power bank so popular? Is it the technology or its efficient battery? Read on to find out.

Read the full review of Anker PowerCore 20100

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Pros & Cons:

Pros:

• A big, efficient battery

• Simultaneous charging of two devices

• Amazing charging time of two devices at the same time

• Relatively small and low weight for its capacity

Cons:

• It doesn’t charge all devices at their optimal speeds

• Lacks USB-C for input and output charging

Rating

Power & Performance (1 to 5 stars)

Design & Build (1 to 5 stars)

Technology (1 to 5 stars)

Overall Rating (average of above)

Key Info:

• Capacity: 20,100 mAh / 72.36 Wh

• Weight: 12.7 oz / 359 g

• Dimension: 6.5 x 2.4 x 0.9 in / 16.8 x 6.2 x 2.2 cm

• Average Charging Time (3000mAh Battery): 2 hours

• Average Recharging Time: 9 hours and 45 minutes

• Ports: 2xUSB-A Output (5V/2.4A), Micro USB Input (5V/2A)

• Charging Technology: PowerIQ

• Flight Status: Under 100WH. Safe to take on board.

If you’re familiar with Anker’s products, you’ll see that the PowerCore 20100 conforms to the company’s traditional plain and minimalistic style. For this category, the power bank has good size and weight. However, it’s not a power bank you can easily slide into your pocket while charging your phone unless you don’t mind excessive weight pressing on the side of your leg.

It’s robust construction. The material is sturdy and should withstand a fall from a few feet onto a soft-ish floor. Potentially it could survive rock or hard ground, but the battery might be damaged.

The manufacturer guarantees a matte finish. Unfortunately, it attracts small smudges and fingerprints. It stays firmly in your hand. It’s available in black, white, red, and blue.

In the upper-right corner, you’ll see 4 LEDs indicating the battery level. Each light represents 25% capacity. The lights are bright enough and don’t flash annoyingly. When the power bank is being recharged and reaches full charge, charging automatically stops, preventing damage to the power bank and charger. On the left-hand side is the power button.

On the top side are the USB ports: two USB-As for output charging and one Micro USB for input charging. Many power banks have up to 4 ports, but their output charging speed is low, frequently 3A, which means simultaneous charging is also slow. The PowerCore 20100 has only two ports for output charging, but with a maximum output of 4.8A, so if it’s charging two devices, they charge at the maximum speed. If this device had a USB-C for output and input charging, it would be almost perfect.

During our tests, the PowerCore 20100 charged the Samsung S8 and Huawei P10 in one hour and 40 minutes – a great result. However, individual tests aren’t that great – on average a single phone charges within the same time as two phones simultaneously. It’s a bizarre result. Potentially, a decent compatible cable is needed.

The power bank takes around 10 hours to recharge, which is a solid result, slightly faster than an average phone. The maximum input is 2A, so as long as you use a wall charger that delivers this amount of power, you’ll get a full charge in 10 hours.

This power bank will be ideal for those who need extra energy for 3-4 days to charge phones every day.

The Anker PowerCore 20100 has proved its worth. It features a highly efficient battery, high-quality ports, and robust construction. It lacks a USB-C port and fast-charging technology, which would make the device more versatile and powerful. However, if you’re looking for a solid power bank that will last for years, you won’t be disappointed.

Read the full review of Anker PowerCore 20100

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The Verdict & Conclusion

After dozens of hours of research and testing, we’ve concluded that these are the best six power banks in the 20,000 mAh category. Each one differs slightly from the others in terms of features, but all of them provide a high-quality battery, multiple ports, fast charging, and durable construction.

The winner is the RAVPower Portable Charger 20000mAh PD 3.0 18W. It’s one of the most popular power banks on Amazon. It has everything a high-end 20,000 mAh power bank should have: a powerful battery, multiple ports, fast charging and recharging, an LED screen indicator, sleek design, and high-quality materials. It’s one of the most expensive on this list, but the quality and technology have made this product a top choice for years.

The second place on the podium belongs to the RAVPower Portable Charger 20000mAh 60W. What distinguishes this power bank from other products is its laptop charging ability. With 60W output, it can charge compatible laptops with USB-C ports (such as MacBook Pros). It’s an amazing feature that makes this product an all-encompassing power bank.

Sharing third place on the podium, we have the ROMOSS PD Power Bank 20000mAh 18W Quick Charge, and the INIU Power Bank 20000mAh 20W PD3.0 QC4.0. Both brands may not be well-known, but they fully deserve more recognition. For a reasonable price, both products provide a high-quality battery, an LED screen battery indicator, sleek design, unique features, multiple ports, fast charging speeds, and high-tech. All in all, if you need a quality power bank and don’t want to shell out loads of money, these two will work well for you.

Last, but certainly not least, are two of the most popular power banks in recent years: the Anker PowerCore Essential 20000mAh and Anker PowerCore 20100. Both devices are popular on Amazon and provide a high-quality battery, robust materials, multiple ports, and fast charging. Due to their outdated technology, they can’t compete with the units on the podium. However, if you want a power bank from the most reputable company in the battery world that’s used by hundreds of thousands of people, these two will work out perfectly.