MaxOak Laptop Power Bank review

MaxOak Laptop Power Bank review

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Last Updated on May 1, 2024 by Daniel Osakwe

Nowadays, there is almost never anywhere without a power outlet (or a USB port), but on the rare occasions that you are without power, having a backup battery is a huge help in case your smartphone or laptop dies.

The market isn’t short of options, but few can sustain you for days on end. In contrast, the MaxOak 50000mAh is an extraordinarily strong and large battery that is capable of charging a wide variety of gadgets on the go. While the power compromises its size and the charging ports aren’t very fast, this battery pack is the right choice if you need lots of power.

MaxOak Laptop Power Bank: Specs

  • Product Name: 185Wh/50000mAh External Battery Power Bank
  • Product Brand: MAXOAK
  • Release Date: June 2015
  • Weight: 2.77 lbs.
  • Product Dimensions: 8.1 x 5.3 x 1.3 in.
  • Color: Gunmetal
  • Removable Cables: Yes, included
  • Controls: Power button
  • Inputs/Outputs: One DC20V 5A, one DC12V 2.5A, Four USB 5V
  • Warranty: One year
  • Compatibility: Android, iOS

MaxOak Laptop Power Bank: Design

MaxOak Laptop Power Bank review

To begin with, it’s a tank. It weighs approximately the same as most compact laptops, despite being heavier than most smartphones. Additionally, its dimensions (HWD) are 8.1 x 5.3 x 1.3 inches. The MaxOak is not balanced in terms of weight. Ported sides can hold a lot more weight than those without ports. Initially, you might not notice it, but as time passes, you will.

We found the metal enclosure and the plastic ends to provide a fairly solid feel, but for some reason, the metal ends do not sit perfectly flush with the plastic ends. A quality control issue might have caused the problem or the charger may have been built in a certain way, but it’s definitely noticeable.

Incredibly, the charger includes so many ports. Two of the Type-A ports are 2.1A and two are 1.0A, and two AC plugs are 2.5A and 5.0A. Additionally, MaxOak includes a host of connection adapters with the charger, offering a solid range of charging options. However, considering how ubiquitous USB Type-C ports are becoming, it would have been nice to see a USB Type-C port (or two).

This device weighs more than many smartphones and is nearly as heavy as most laptops.

It is charged via a connector on the opposite side of the power button that provides 16.8 volts and 2.5 amps. A 50000mAh laptop battery charger generally looks like what you would expect from one. This, too, is quite large and heavy, but that’s to be expected.

MaxOak Laptop Power Bank: Setup Process


MaxOak laptop battery chargers are easy to use. As soon as you take it out of its unbranded cardboard box, all you have to do is plug it in and let it charge. In our testing, we wanted our device to be charged 100%, but based on the LED on the charger, our device came charged at roughly 50%. This is our biggest complaint with the charger.

In order to avoid the hassle of carrying around unnecessary cables when traveling, these chargers provide extra battery power. MaxOak’s battery pack does not use a USB or standardized port. MaxOak’s battery pack relies on a proprietary power supply rather than a USB Type-C or micro-USB port to charge. It is nearly as big as most laptop chargers. 

You could probably leave the charger for your laptop behind as well, but eventually, you’ll run out of juice, and you’re stuck bringing along with a proprietary charger versus bringing a cable you probably already have in your bag.

Charging Speed and Battery

MaxOak power bank

Considering its size, the MaxOak 50000mAh charges reasonably fast, however, we would prefer it to have more high-powered ports for faster charging. The MaxOak power bank was fully charged and completely discharged five times and recharges took around six to eight hours on average.

Additionally, the power bank can charge a laptop or mobile device while simultaneously charging the power bank.

But charging the power bank itself is only one half of the equation-and arguably the less important half. Its ability to charge other devices is more important.

Power banks of this size can offer the highest capacity per unit volume at 50000mAh/185Wh. We tested it on both an iPhone XS and a Samsung Galaxy S8 Active. For laptops, we tested an ASUS X555LA.

It took just short of twelve charges from 0% to 100% for the MaxOak power bank to charge the Samsung Galaxy S8 Active. Based on the 50000mAh capacity of the MaxOak power divided by the 4,000mAh capacity of the Samsung Galaxy S8 Active, this is almost exactly in line with the capacity of the MaxOak power. 

With the iPhone XS, we experienced similar results. Although Apple doesn’t mention the iPhone XS’s battery capacity, third parties have reported it to be approximately 2,700mAh, or roughly 18.5 full charges. As a result of our tests, MaxOak power bank provided a 17.5% charge.

The MaxOak power bank was able to charge our ASUS X555LA four and a half times from 0%, with an average charge time of about three hours. Compared to most laptops, the ASUS X555LA has a relatively small battery, so it falls in line with MaxOak’s claims that its power bank can charge a laptop two times over.

Pros Cons
Several ports to choose from Inefficient and underpowered ports
Includes a lot of adapters Massive
Capacity is high This device requires an additional power adapter

Final Verdict

Despite its massive capacity, the MaxOak 50000mAh is an okay power bank. It is not designed to work with newer computers or devices. It works with older laptops that don’t have MagSafe connectors or aren’t currently using USB Type-C for charging (the MaxOak does not support these). You will want to look elsewhere if your smartphone or laptop is newer and relies on more powerful connections.