Jan 17 2014

Review: Y3E Power Bank

Y3E Power Bank

Sometimes when you are on the go and cannot charge your phone with the normal charger, it would be nice to have a portable power bank with you. I wanted to find a small enough bank that would be comfortable to carry and with large enough capacity to charging one or two mobile phones. One such power bank is the Y3E.

Hardware

Y3E Power Bank

The Y3E power bank is between my Xiaomi Mi-2 and a Samsung Galaxy S3. You can see that it is smaller in width and height than a modern smart phone. It is 108 mm (4.25″) high and 64 mm (2.52″) wide. There is a power button and five little blue LEDs to indicate how fully charged it is.

Y3E Power Bank

Y3E Power Bank

The bottom side hides a normal Type A USB charging cable. The power bank can be charged with it from a USB port. The power cable is attached to the power bank permanently from one end and it is nicely embedded into the surface.

Y3E Power Bank

Y3E Power Bank

The other end has a flash light. You need to double-press the power button to light it up and turn it off. The same end has additional in/out ports for various hardware combinations.

Y3E Power Bank

The opposite end hides two commonly used charging cables: Apple’s proprietary and a standard micro-USB. They are nicely integrated so they stay in place well. There were many different adapters in the package, should you need a different kind of end for a particular device. To charge a device, you connect the charging cable and press the power button once. It will begin charging immediately. It even has enough juice to charge my iPad 2 which requires 2.1 A of current. That is not an easy task for a portable power bank.

Y3E Power Bank

Y3E Power Bank

Here you can see that it is a bit thick: 22 mm (0.87″), making it about twice as thick as a modern smart phone. The power bank weighs 184 g (0.40 lbs). For comparison, Samsung Galaxy S3 weighs 134 g (0.3 lbs) and my Xiaomi Mi-2 weighs 146 g (0.32 lbs).

Capacity

It says “8400 mAh” on the front so that should be the capacity. Now it is very difficult to measure the capacity accurately because there is always power transfer loss through heating. With the power bank fully charged, I was able to charge two phones four times.

Phone Battery Charging Time Initial Charge End Charge
2,300 mAh 90 min 15% 89%
2,000 mAh 90 min 27% 92%
2,000 mAh 60 min 52% 100%
2,000 mAh 15 min 30% 40%

Charge Time

It takes 5 hours and 30 minutes to charge the power bank via a standard laptop USB port. The bank heats reasonably but not notably when charging.

Where to Get?

I ordered mine from AliExpress store AirBox Inc. It cost $22.50 (16.50 €) including postage. The product photo looked different and the capacity in the description was lower (5000-6000 mAh) but I didn’t mind.

Conclusion

The Y3E power bank gives very good value for the price. With the capacity you can charge 2,000 mAh battery approximately twice from 0% to 100%. The built-in charging cables are nice because you don’t have to remember to take different cables with you – you just take the power bank and that’s it. The flash light can become handy. The only down side is its thickness as it is about twice as thick as a modern smart phone.

2 Responses to “Review: Y3E Power Bank”

Leave a Reply