Emie Power Note 5200mAh

Tech Advisor - - REVIEWS - Marie Brewis

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.

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