[Nexus 5X Accessories] Alcolawl:
Introduction

The Presto is a 12000mA/h portable battery charger. Much like the included wall charger, it too is Qualcomm QuickCharge 3.0 compatible. Unfortunately, my Nexus 5X is not QuickCharge compatible, but is still capable of pulling 3000mAh from the charger provided from LG. Due to the size of the battery built into my phone, this charger can fully charge my phone three to four times before running out of juice. Impressive for such a small package.

Disclaimer: I received the reviewed products from Tronsmart in exchange for this review. I have no financial stake or affiliation with this company. No bias exists here.

Details

Device: Tronsmart Presto 12000mAh USB Type-C External Battery Power Bank

Price: $34.99 (at the time of this review)

USB-C Input/Output: 5V/3A(MAX)

USB-A (QC 3.0) Output: 3.6V-6.5V/3.0A,6.5V-9V/2.0A,9V-12V/1.5A(MAX)

Dimensions (L x W x H): 6.25" X 2.125 X .75"

Initial Impressions

Upon opening the package I discovered I had been shipped a Single Port Qualcomm QuickCharge 3.0 charger, a short USB-A to USB-C cable to charge the power bank, a very nice braided USB-A to USB-C cable and, the star of this review, the Tronsmart Presto.

The wall charger, battery/portable charger and cable are consistent with the quality that I've come to expect from Tronsmart. For the purpose of this review, I'll only concentrate on the look and feel of the Presto external charger.

Design and Features

The Presto is a sleek rectangular brick measuring 6.25" Long, 2.125" Wide and .75" High. The entire brick, with exception of the top trim, is a nice feeling black matte plastic. The trim is a glossy black plastic as well as the "Tronsmart" branding which is debossed in the center. Overall, the product feels well built, slick and would be reasonable enough to carry in something as small as a woman's purse. My only complaint about the design of this device is that Tronsmart made the odd choice to label both charging ports with black ink instead of white. The labels aren't legible except when catching the light at a certain angle. An interesting decision, especially when you consider the included charger has white labels.

This portable charger comes with two ports. A USB-A QC 3.0 compatible port that is strictly used for charging and a USB-C port that is used to charge the brick and can also be used to charge USB-C devices. To enable charging, one must simply connect a device and then press the power button on the side of the Presto. Four charging lights will illuminate and as the external charger's power is drawn down, these lights will slowly fade one by one. It works the opposite way when charging it back up. Four lights indicates that the Presto is fully charged.

Performance

Charging performance is terrific. I was able to achieve charging speeds identical to the 3000mAh charger that came with my phone, although, normally, my phone pulls about 1800mAh due to several factors like battery temperature and CPU usage.

I was unable, however to match the same performance when connected to the QC 3.0 port via a USB-A to USB-C cable. This was expected, however, as the phone, as I stated before, is not QC compatible.

(hadn't changed the theme before this screenshot)

Overall

Overall, the Presto is a sleek, minimalistic, easy to carry portable charging solution that can come through for charging many different devices in a pinch. Even though my phone is unable to take advantage of the QuickCharge 3.0 capabilities offered up by this product, charging speeds via the USB-C port are still impressive.

Additionally, I'd like to thank Tronsmart for the charger, cables, the power bank and the opportunity to review one of their products.