Ultra-high-capacity power banks are a must-have if you’re planning to spend extended time on the go. These 25000mAh to 50000mAh beasts can power larger devices like digital cameras and laptops, or give your phone a full charge several times. If you’re planning to use a power bank to keep all of your fancy devices powered up, here are the best ultra-high capacity portable charger options.

Also: The best portable chargers and power banks: A buyer’s guide

The best 25000mAh to 50000mAh power banks:

Editor’s note: We’ll be updating this list of the best 50000mAh power bank options. Also, when using power banks with USB-C ports, check your device’s compatibility beforehand. Some power banks may require adaptors, and others may not work at all.


1. Anker PowerCore+ 26800mAh

Anker PowerCore 26800mAh

Anker is a trusted name for portable battery chargers, and this particular option offers it all. First, you get a lovely capacity of 26800mAh, which is more than enough to recharge your smartphone multiple times fully.

The newest version of the power bank comes with three USB ports, including a USB-C port with 30W output to let you charge a MacBook or Nintendo Switch. Like every portable charger on this list, you get protection from short circuits, overcharging, and current or voltage surges. The mobile charger also comes with a 60W USB-C wall charger, which is an excellent addition.

More: The best charging stations you can get

Key details:

  • Capacity: 26800mAh
  • Output: 2 x USB ports 5V/3A max, 1 x USB-C port 5V/3A or 9V~15V/2A or 20V/1.5A (30W max)
  • Dimensions: 166 x 80 x 23mm, 725g

2. Fochew Wireless Portable Charger 30800mAh

Fochew Wireless Portable Charger 30800mAh

This Fochew portable power pack not only has a massive 30800mAh battery, but it’s also one of the most convenient options on this list. This is primarily because of its Qi wireless charging capabilities, which can juice up devices at 15W without cables.

Other features include 25W Power Delivery, as well as Quick Charge 4.0. It also comes with four ports, of which all work as outputs, and two can be used as inputs. It’s also very affordable for what you get!

More: Our guide to all the phone accessories you’ll ever need

Key details:

  • Capacity: 30800mAh
  • Output: 2 x USB-A port 5V/3A QC 4.0, 1 x USB-C port PD 3.0, Qi Wireless Charging
  • Dimensions: 149.86 x 73.66 x 15.24 inches, 360.04 grams

3. Tecknet Portable Laptop Charger

Tecknet Portable Laptop Charger

Tecknet makes one of the best high-capacity power banks if you don’t mind carrying a larger unit. It’s also great looking, but aesthetics aren’t all it packs.

The unit comes with a handsome 42000mAh battery. Three ports will help you keep all your mobile devices powered, while a PD 45W USB-C port will also juice up a laptop. If that’s not enough, you also get an AC outlet and an integrated lamp.

Key details:

  • Capacity: 42000mAh
  • Output: 3 x USB port 5-12V/2.4A, 1 x USB-C port 5-20V/3A with 45W PD, 1 x AC outlet (up to 150W)
  • Dimensions: 233.68 x 81.28 x 81.28mm, 1.7kg

4. FlashFish 40800mAh Solar Generator

FlashFish 40800mAh Solar Generator

Some may believe a battery this ample and complex is overkill for 40800mAh. This one has a nice trick up its sleeve, though. It’s technically a solar generator, and panels can keep it charged and ready for your electronics. It comes with a couple of AC outlets and three USB ports too.

The only downside about this high-capacity power bank is that it can’t be charged and used simultaneously, but that is a common issue with portable batteries. Also, the solar panels are sold separately. Otherwise, it’s a very convenient and powerful battery generator.

Related: The best car chargers: A buyer’s guide

Key details:

  • Capacity: 40800mAh
  • Output: 2 x USB QC 3.0, 1 x 5V/2.4A, AC outlet with 9-12.6V/10A
  • Dimensions: 357.89 x 259.08 x 171.96mm, 2.44kg

5. Romoss 40000mAh Power Bank

Romoss 40000mAh Power Bank

This portable battery from Romoss packs plenty of ports and offers more than enough juice. It has a large 40000mAh battery and options for most cables on the market. It features USB-A, USB-C, and MicroUSB, but you won’t find an AC port on this high-capacity power bank.

Other features include a screen for checking the amount of power left in the battery, as well as informing you of the current and voltage usage. You can charge with the MicroUSB or USB-C ports, but it will take a while. Even with an 18W adapter, the super large battery should take about 16 hours. The high-capacity power bank is very affordable compared to its direct competition, though. We’re sure you wouldn’t mind waiting a bit.

Key details:

  • Capacity: 40000mAh
  • Output: 2 x USB-A, USB-C, MicroUSB
  • Dimensions: 6.69 x 3.19 x 1.73 in. 33.6 oz.

6. Powkey 42000mAh Power Bank

Powkey 20000mAh Power Bank

There are less expensive power banks with more juice in this list, but the Powkey 42000mAh Power Bank has an excellent build quality and fantastic versatility.

A couple of AC outlets make it possible to plug in pretty much anything. Then there are four USB ports for charging smartphones, tablets, and other mobile products. It should be enough to keep your devices alive for long, considering it has a 42000mAh battery.

Key details:

  • Capacity: 42000mAh
  • Output: 2 x AC, 4 x USB (5V/3.1A), 2 x DC
  • Dimensions: 200 x 145 x 46mm, 1,497g

7. Maxoak laptop power bank

Maxoak Laptop battery

Now it’s time to get to the big boy power banks. The Maxoak Laptop Power Bank is meant precisely for what its name entails. The extended 50000mAh battery can charge computers and mobile devices alike. It features a traditional outlet for charging any device at 20V/5A speeds.

Need less?: The best 10000mAh power banks you can buy

In addition, you can enjoy four USB ports. Two of these have 5V/2.1 A capabilities, while the rest keep a more modest 5V/1 A. This is easily one of the best 50000mAh power bank options out there, but the price is starting to get higher.

Key details:

  • Capacity: 50000mAh
  • Output: 1 x DC 20V/5A, 1 X DC 12V/2.5A, 2 x USB 5V/2.1A, 2 x USB 5V/1A
  • Dimensions: 206 x 135 x 33 mm, 1,260g

8. Krisdonia 50000mAh laptop power bank

Krisdonia 50000mah power bank

As the name implies, the Krisdonia 50000mAh Laptop Power Bank is perfect for charging your laptops (as well as smartphones, tablets, and other devices) while away from a plug. It sports DC input and output options, as well as two USB-A ports and a USB-C option. If you don’t have your trusty laptop charger around, the Krisdonia comes with a set of 28 unique adapters to fit just about any model on the market.

Once again, this power bank is far too large to take on an airplane. It’s among the largest on our list, though, so it should give you all of the power you could ask for.

Key details:

  • Capacity: 50000mAh
  • Output: 1 x DC output, 1 x DC input, 2 x USB-A output, 1 x USB-C output
  • Dimensions: 19.5 x 15 x 2.8cm, 1.2kg