If theres a knock against this power bank its that it has a max 2A power input, so itll take around six hours to fully recharge.

Its understandable, given the fact that you use it as a phone, camera, music player, personal computer, navigation device and social media machine but its still a big problem.

Of course, there are various settings on your smartphone to preserve its battery life.

Theres storage capacity (measured in mAH) and power output (measured in amps), and, of course, other things like size, weight, durability and number of ports.

Its only been with the recent advancements in charging standards and fast charging technology that youve needed to know more.

Not all power banks have the power output to charge a MacBook Pro, for example.

And not all can fast charge your iPhone or Android smartphone.

Power isnt efficient enough to transfer at a like-for-like rate.

Also, the more you use a power bank the more the power banks capacity will actually decrease.

Batteries just tend to get worse over time.

Dont worry, youll get hundreds of recharges out of a power bank before it becomes noticeably worse.) To make sure youre buying a power bank thats as efficient and dependable as possible, we recommend buying from a reputable brand.

Start with these: Anker, Aukey, RavPower, Belkin and Mophie.

Most of the latest smartphones, including the recent iPhone 88 Plus and iPhone X, support fast charging technology.

The quick charge technology allows your smartphone faster than you would with a traditional power bank (it outputs at 5A rather than 3A).

More specifically, you want the power bank to support Qualcomms Quick Charge 3.0 it will be noticeably faster than older models that support Quick Charge 2.0.

Power banks that support USB Power Delivery (USB PD), which is fast charge standard, are able to control more watts and deliver more power basically, theyre able to fast charge larger devices (if those devices support it).

USB Power Delivery only works with a USB-C to USB-C connection, so if you have a 2016 MacBook Pro or new laptop that charges via USB-C, you want a power bank that supports this technology.

The size of the power bank is also going to dictate the price as well.

In general, the more mAh storage capacity, the more expensive the power bank is going to be.

But really, the mAh storage capacity should be secondary to what exactly youre trying to charge.

To take a further dive into the concepts and lingo of portable batteries, and how they are able to charge (or not charge) your devices, we suggest reading the below articles.

More importantly, it has enough power to charge your new iPhone almost four times.

The first port supports Qualcomm Quick Charge 3.0 according to the company, it allows you to fast charge supported smartphones to 80-percent in just 35 minutes.

The second USB port can charge most other connected devices, although it doesnt support fast charging.

Best Portable Batteries For Mac Air