Review: Anker Powerport Atom III Slim 65W 4-Port USB Charger

Anker has introduced a wide variety of wall chargers within the last year. They have quietly reduced their size and weight, while increasing their power output. They have tiny phone chargers, models with at least six USB ports, and models that will charge any laptop with no effort.

The company is now using that knowledge to create chargers that can do just about everything. Although charging a laptop, smartphone, and tablet with a charger small enough for you to carry around was once a dream, it seems that this is no longer the case.

Anker uses the exact same name for two different products. There is a Powerport Atom III Slim with a single port 30W USB–C charger and a 65W four-port model. I am reviewing the latter.

Specifications and Features

The Powerport Atom III Slim 4 Port, like its name, is a small device. It’s compact and lightweight at 3.5×3.4×0.8″ (9×8.7x2cm) and 4.8oz (135g) . While I’m not certain why you would do that, I can guarantee it will be possible.

The power cable, measuring five feet in length and plugging into a wall socket at 5 feet, is not included in this weight. It is wrapped with a Velcro strap to keep it in place. If you need a shorter version for travel, you can use any standard cable with an 8-pin plug.

The device is plain and has no branding. A small circle lights up when the power is on. The wall cable plugs in at the back. At the front, you’ll find all the ports, including a USB C 45W PD and three USB A sockets sharing 20W of power. The USB-A sockets are capable of delivering a maximum of 12W (2.5v x 2.5a).

There’s nothing else inside the box other than a Velcro strip to secure the charger to your desk.

Real-World Testing

I tested the charger in several ways. I first put it through some stress tests for a few days and then used it for three week as my everyday charger to confirm its reliability.

Stress Testing

To begin, I repeatedly drained two smartphones and a laptop to half the battery. Then, each phone was charged with its own charger and the Powerport III. I tested the USB C port and one USB A port separately for the phones.

Lenovo Yoga 920

FACTORY-CHARGER

19.1v @ 2.79a = 53.3W

POWERPORT III SLIM (USB–C).

14.1v @ 2.55a = 36W

As you can see from the image, the Powerport can’t produce 45W as much power as the factory charger of 65W that came with the laptop.

Google Pixel 2

15W USB C CHARGER

4.76v @ 1.48a = 7W

POWERPORT III SLIM (USB – C)

8.64v @ 0.8a = 6.9W

POWERPORT III SLIM – (USB-A).

4.88v @ 1.33a = 6.5W

The Pixel 2 charged with no problems. There was no difference in the output of my regular 15W charger and the Powerport III USB-C port. The difference was minimal when I used a USB A instead.

OnePlus 6T

15W USB C CHARGER

4.78v @ 1.38a = 6.6W

POWERPORT III SLIM (USB–C).

4.78v @ 1.38a = 6.6W

POWERPORT III SLIM – (USB-A).

4.88 @ 1.38 = 6.7W

There wasn’t any difference charging a OnePlus6T smartphone with a regular charger or using one of the Powerport III ports.

 

However, power measurements are only one thing. For most people it’s much more useful to find out how long charging takes. Modern devices slow down charging rates as they approach capacity in order to prevent damaging the battery. There is often less difference between the raw numbers and actual charging time.

No matter what I used for charging my smartphone, it charged in the same way. However, my laptop did not charge as fast.

Yoga 920 went from 50% to 100%.

  • 81 minutes using the factory charger
  • Anker PowerportIII Slim takes only 107 seconds

It isn’t significant and won’t be with every laptop. Our top choice for a laptop that can be used as a travel companion, the Dell XPS 13 ships a 45W charger while Apple’s Macbook Air comes with a 30W model. In both cases, the Powerport would make little or no difference in charging speed.

To see if there was any power loss, I tried a few devices both separately and in combination. As I connected and disconnected the laptop, two other phones, a Bluetooth headset, and some batteries for my portable devices, there was no noticeable difference.

I also watched the Powerport temperature as it charged the laptop. These chargers are often very hot and can become extremely hot. While the laptop did feel warmer after an hour or two it never became unbearably hot.

Everyday Testing

 

The stress testing took several hours, and I had to use a variety of measuring tools, but the everyday testing was quick and easy.

 

There were already a few charging cables around my desk for a phone, laptop, headphones, and Fitbit so I just plugged them all into Powerport III.

It was my only charge source for about three weeks. It kept my phone and laptop connected the majority of the time. I only used the Fitbit and micro USB cables once in a few days.

Everything worked as you’d expect. My laptop, along with my phone, was always fully charged after I took it from the charger. There were no disconnections or slowdowns to the charging speed. It was as simple and straightforward as it sounds.

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Verdict

I loved the Anker Atom III Powerport. Amazing that you can pack this much power into such a small device.

You can use it every day as a charger for your smartphone, tablet and laptop at home. Once you’re done, just grab it from the bag and head to a café or airport. It proved to be solid throughout my testing. Even though it warmed up under heavy loads it never got too hot.

It might charge many laptops more slowly than usual, but it is likely to make a difference in real life that is less than the specs may indicate. A single charger can charge all of your devices, so it will not be a hassle for most people.

Anker is definitely on the right track with their Anker Powerport Slim 4-port charger. It’s very cost-effective and highly useful. Recommended.

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