Portable Charger, TROND Air 4000mAh External Battery Pack Power Bank (8mm Ultra Slim, 2.4A Smart Charging, 2.0A Fast Recharging, Unibody Brushed Aluminum Housing), for Apple iPhone 6S 6 Plus 5S 5, Samsung Galaxy S6 Edge S5 S4 S3 Note 5 4, iPad, Tablet and More - Blue

I'm really impressed with this battery. The USB cable has a reversible plug, which is a nice touch that shows the company put some effort into the details. The cord itself is flat and easy to fold and put in my purse and I'm sure it would fit well into a man's billfold wallet as well. Even the packaging is nice. It also comes with a thin carrying pouch that keeps it from getting scratched. It really does have some nice touches.The battery itself is flat, probably about 2-3 times the size of a regular cell phone battery. However, it carries enough juice to charge a typical phone 2 times. It has an on/off button and a LED light with 3 different colors to let you know if it's barely charged, moderately charged, or completely charged. It charges cell phones at 2.1A which is very fast in this price range.There are other batteries that have more name recognition but I'm very happy I got this one.

This battery contains similar capacity to other batteries I've seen/used, however what sets it apart is its compact design. It slips in the pocket of all styles of clothing and is virtually unnoticeable. Yet the main reason why this device gets 5-stars is because of the service I received from Trond. From the moment I contacted them about an issue with my initial purchase they were quick to respond, honest about the issue and replaced it without any of the usual headache of activating manufacturer warranties.Great work Trond! I will be buying and recommending their products regularly!

This thing just flat out WORKS! Steady and reliable (unlike others I have tried). Nice, slim form factor that does not bulge like other batteries in the "lipstick" configuration. Fast charging from a source, and rapid charging of my Samsung Galaxy S4 and Samsung Tablet. TROND's customer service and tech support are superior, and, let's face it: a product is only as good as its support. If I were buying something and TROND was a choice, that's where I'd put my money.

This battery is so slim and light for a 4000mAh charger. It charges my Note 4 lightning fast. I had a different brand battery before but it was big and heavy. The only thing that would make it perfect would be if the cable was some how attached and stored on the battery but because it is so small, it would be impossible. I keep the cable folded in half and tucked in the battery sleeve that came with it.

I got this TROND 4000 mAh power bank yesterday and have been exceedingly pleased with the overall package and performance it provides.Like the product title says, it is really really super, ultra slim. In terms of the size, it is slightly larger than credit card. This makes it a good fit for travel, outdoor activity and daily usage when you only have one small purse to carry with. The black travel sleeve looks pretty and makes me happy too.Love it!

I returned a lipstick style battery for this one. This is muchore convenient for your pocket. Keeps a charge well and can charge my iPhone 6 at least twice. Lightweight, pretty and functions well.

Initially it worked great, I could get 2 or 3 full charges of my iphone 6 out of it. The charge decayed as time went by, after less than 40 cycles, it only charges half of a charge of my iphone 6. It became swollen and got pretty hot during charging. I charged it mostly with my iphone charger and an amazon usb charger. Maybe I should have taken some special care but no special instructions were provided.

Losing power over time, but otherwise great! I can still get 50% out of this thing EASY! But not quite a full charge anymore.

Cercavo qualcosa di carino e funzionale e devo dire che questa power bank ha rispettato tutte le mie aspettative, poi questo colore blu è davvero bello. E' sottile e larga più o meno quanto uno smartphone, per cui si può tenere in mano insieme allo smartphone senza problemi, si impegna una sola mano, poi il cavo di collegamento flat la rende ancora più funzionale, perchè non è lungo e non da impiccio. Inoltre se si vuole usare la custodia nera in simil pelle di ottima qualità, il tutto ha anche la sua eleganza. La durata è davvero fantastica, con una sola carica si riesce a fare anche tre giorni di uso intensivo. Ho smesso di dannarmi perchè il mio smartphone non arriva a fine giornata. Acquisto consigliatissimo ad un prezzo ottimo rispetto agli altri tipi in commercio e da me provati. I led che indicano la stato di carica sono una comodità e una figata.

The slim build makes it easy to carry and use. The only con is the small included cable, not having a full enclosure on the end that plus in the USB port (The large section) makes it flimsy and hard to insert. Purchased 3 of these batteries and one cable was not magnetized.

POCO CAPIENTE OVVIO MA DOPO ANNI SODDISFATTO

I have had this product for about one year. The battery has expanded a bit which is a problem, and the battery life dropped to the point where it wouldn't fully charge my iPhone 6s. These problems started happening after having it for 10 months. Any time before that I would give it a 4.5 out 5 stars, since it was very easy to put into my pocket and could recharge my iPhone 6s twice.Would not recommend if you want to use the product for a few years.

Great little power bank. I got one full charge on my htc one m8 from this. I was amazed by the build quality and what you get in the box. The sleeve you get looks great and protects the brushed aluminum body of the power bank. The cable has magnetic ends that connect although I had a problem with the usb cable popping out easily when it's in my pocket. It's not much of a problem as long as you make sure it's in all the time.