Best 20000mAh power banks

Next to 10000mAh power banks, the 20000mAh ones are some of the most popular capacity models. They are perfect for people that want a bit more range than the 10000mAh chargers provide, but still want to have a relatively lightweight and portable device.

If for example, on a 10000mAh power bank you can charge an average smartphone 2-3 times, with a 20000mAh power bank you can increase that range to 5-6 times. Not to mention the fact that you can charge a laptop such as the MacBook Pro around 2.5 times, provided they have the right amount of output power.

In this curated list we strived to include some of the best 20000mAh power bank models available today. Depending on your needs you might find some to be more suitable than others. What we looked for in these devices was for them to have some of the latest and best charging technologies possible.

Elecjet PowerPie 20000mAh 45W USB C PD

Best 20000mAh Power Bank

  • Capacity: 20000mAh
  • Max output: 45W
  • Ports: 1 USB type C, 1 USB type A
  • Fast charging: PD
  • Weight: 13.8 oz / 391 g
  • Recharging time: 2.5 h
  • Price: ~$69.99 (actual price might vary)
  • mAh/$ ratio: 285.75

Buy on Elecjet.com

The Elecjet PowerPie is an all-around very well built unit that comes with Power Delivery compatibility. This allows it to both charge itself very fast (just 2.5 hours) and also to quickly change other devices. For example, you could use it to change an iPhone 11 Max up to 50% in just 30 minutes.

With an 45W power output it can easily charge most laptop models, including the MacBook Pro but also the Nintendo Switch, even during its TV mode.

In terms of other charging technology features, it comes with pass through charging and a low current mode, which enables you to charge devices that require low current outputs such as Bluetooth headphones and smartwatches.

What we like about it
  • Recharges in just 2.5h
  • It’s PD compatible
  • Can charge most laptop models
  • Comes with pass through & low current charging
What we dislike about it
  • Not compatible with Lenovo’s X series laptops

RAVPower PD Pioneer 20000mAh Power Bank

Best Portable Charger

  • Capacity: 20000mAh
  • Max output: 60W
  • Ports: 1 USB type C, 1 USB type A
  • Fast charging: PD 3.0, QC
  • Weight: 14.4 oz / 408 g
  • Recharging time: 3 hours
  • Price: ~$50 (actual price might vary)
  • mAh/$ ratio: 400

Buy on Amazon

The RAVPower PD Pioneer 20000mAh is one of the latest and best models in the PD Pioneer series launched by RAVPower. As the name implies, these power banks are created around hte Power Delivery technology wich allows them to both charge other compatible devices and recharge themselves in very short amounts of time, compared to traditional power banks.

For example, the RAVPower PD Pioneer 20000mAh can be recharged in 3 hours, which is roughly half the time of a non-PD power bank. It can also charge the MacBook Pro 13″ from 0% to 60% in just one hour. These are some good charging speed by any account.

Besides the USB type C PD port, it also features a USB type A port with Quick Charge capable of delivering 18W of power output. This is a great solution for quickly charging just about any smartphone.

What we like about it
  • It features both PDand QC
  • It can easiliy charge most laptop models
  • Premium-looking design
What we dislike about it
  • It could do with one or two extra output ports

Read the full review of the RAVPower 60W PD Pioneer.


NusGear 20000mAh 100W PD Power Bank

NusGear 20000mAh power bank

  • Capacity: 20000mAh
  • Max output: 100W
  • Ports: 1 USB type C, 1 micro USB, 2 USB type A
  • Fast charging: PD, QC
  • Weight: 20.6 oz / 584 g
  • Recharging time: 1 hour
  • Price: ~$55 (actual price might vary)
  • mAh/$ ratio: 363.63

Buy on Amazon

What sets the NusGear 20000mAh power bank apart is its impressive 100W power output. Very few other portable chargers can match this output level, that can charge even the most power-hungry laptop models.

Equally impressive is the ultra-fast 1 hour recharging time. This can be achieved only by using an 87W USB C wall charger. Charging it with adaptors that have lower outputs or that don’t use a USB C charging cable, will result in charging times as low as 9 hours.

In terms of ports, it features one micro USB, one USB C with Power Delivery, and two USB A with Quick Charge. Overall, it provides a good port variety, which enables you to charge up to 3 devices simultaneously.

The design is sleek and elegant and the outer case is made of metal. The black metal casing is durable and scratch-resistant but unfortunately it’s heavier than a regular plastic one and it adds to the overall weight of the NusGear 20000mAh.

What we like about it
  • 100W max power output
  • Ultra-fast recharging time (provided the right charger is used)
  • It features both PD and QC
  • Sleek and elegant design
What we dislike about it
  • On the heavy side

Read the full review of the NusGear 20000mAh 100W power bank.


ZMI 20K Pro 20000mAh 65W Power Bank

ZMI 20000mAh power bank

  • Capacity: 20000mAh
  • Max output: 65W
  • Ports: 1 USB type C, 2 USB type A
  • Fast charging: PD, QC
  • Weight: 15.5 oz / 439 g
  • Recharging time: 3 hours
  • Price: ~$89 (actual price might vary)
  • mAh/$ ratio: 222

Buy on Amazon

The ZMI 20K Pro is one of the best looking 20000mAh power banks. It’s easy to tell that the design team put in a lot of work to come up with this minimal and stylish metal case. But besides its looks, the ZMI 20K Pro is also a very powerful portable charger, capable of a maximum power output of 65W, which is enough to charge most tablet and laptop models.

It features a total of 3 ports: one input/output USB type C with Power Delivery and two output USB type A with Quick Charge. It’s also capable of charging 3 devices simultaneously out of the 3 ports.

One of ZMI 20K Pro’s most unique features though is that it can be turned into a USB hub if needed. In order to do that, just connect the power bank to your laptop using the USB type C port. Then the remaining two USB type A ports will function as extensions to your laptop ports. This means that you can place your wireless mouse USB or a USB storage disk into the power bank ports and your laptop will be able to recognize them.

What we like about it
  • Can charge laptops
  • Premium build with elegant design
  • Can function as a USB hub
  • Comes with both PD and QC
What we dislike about it
  • Premium price

Read the full review of the ZMI 20K Pro power bank.