5 Best Power Bank

Most Affordable - Mini Power Bank Romoss

With the smallest size among the options in this list, the Romoss Mini power bank is roughly the size of a credit card but thicker. At such a small size it holds 10,000mAh which is a relatively decent amount of capacity and can give you multiple charges depending on the device you are charging. There are dual inputs and dual outputs; letting you use MicroUSB as well as USB Type-C. The body is made from a fire-retardant plastic alloy that makes this a hardy and durable power bank too.

Best Overall - RAVpower 16750mAh

This power bank from RAVpower has a capacity of 16,750mAh in a relatively compact size. There are two USB 2.0 outputs that both have 4.5 amps, so two devices can be charged without compromising amps. This power bank also features an LED light for emergencies, something that could be very useful in Pakistan. The price is very ideal for the power and functions this power bank can provide you with. 

Best High-End - Mophie Powerstation all-in-one

A power bank that has it all in terms of charging. The Mophie Powerstation lets you use wireless charging for your smartphones and earbuds. There is also a built-in magnetic watch charger for your Apple Watch. In case you want to make use of a conventional method this device also has a USB Type-C port. The power capacity is at 8,000mAh meaning you have ample power on the go. Given the modern functionality, this is the most costly option that one can opt for among these 5.

Best Features - RAVPower Power Bank 20100mAh Built-in AC Outlet Universal Travel Charger

If truly serious portable power is what you need, this is the power bank for you. It can not only handle your smartphone and other smaller devices but also has an AC output that you can insert your laptop charger into. Other ports include USB and USB Type-C. The capacity is at 20,100mAh, which is a lot of power for your usage. This is the ideal travel partner or even works for camping and such; it will give you multiple charges before you need to recharge it. Due to its size, it does take more time to charge up itself.

Best Slim Design - Anker Powercore II Slim 10,000mAh

For a good power to thickness ratio, one can opt for the Anker Powercore II. It is at 1.5cm but has 10,000mAh of power. It is not much thicker than an average smartphone, making it an easy fit in your palm or pocket. This power bank has a silicone shield for protection. It also features Anker's own fast charge tech meaning it makes quick work of your charging needs. The price is also in the lower ranges, making it an affordable choice too.