Emie Power Note 5200mAh
If you’re a student or you carry a ringbinder for work, its built-in binder holes and Micro-USB cable make the Power Note an ideal device for easy charging on the go. This 5200mAh power bank is also slim and lightweight, with an aluminium chassis that is reassuringly tough and does a great job of dissipating heat.
The Power Note ships in its own little ringbinder, and its user manual is held in place by the clipped-in power bank. Even if you don’t use a ringbinder, the ultra-slim (7mm) power bank will slip easily into a laptop bag or handbag, and it’s tough enough that no carry case is required to protect it.
Our review sample came in black with orange accents; the Power Note is also available in blue and orange or white and orange. Better suited to Android- and Windows Phone users than iOS fans, an orange built-in Micro-USB cable runs neatly up the right edge and clips securely into the side, so you don’t need the hassle of carrying additional cables.
If you are using an iPad or iPhone, a USB output lets you attach your own Lightning cable. Note, however, that the Emie’s max output is 12W, so with both outputs engaged neither will run at full power.
Whether you use the USB output or built-in cable, the Power Note can output 12W to charge your attached phone or tablet. That’s plenty for even the fussiest tablets, and will ensure as quick a charge as the device can handle.
Don’t expect to have 5200mAh of power to charge your devices, mind. Most power banks average around 70 percent efficiency, with some power lost through voltage conversion and heat generated. In such a circumstance, you may find only around 3640mAh available, which for most Android phones is a little over one full charge.
When the Emie runs out of juice a USB cable is included in the box for refilling it. You simply attach one end to your phone or tablet charger, and the other to the Micro-USB input on the device’s bottom. How quick the Emie charges depends on your adaptor, but with a 10W input it should be reasonably fast.
So how do you know when the battery is empty? We’ve expressed our dislike of LED status indicators in power banks before, much preferring an LCD for an exact readout, but at 5200mAh four LEDs are sufficient for telling you at a glance how much power remains. These will activate when you push the small button beside them, which is also used to begin charging.
We love the Emie Power Note. It offers fast charging and a handy built-in Micro-USB cable, too, meaning you can leave the cable clutter at home.