I bought there several months TeckNet® PowerBank 15000mAh, it is big and heavy but charging a lot of times Smartphone and tablet, I wanted a smaller one I took -C. Fantastic! it is slightly smaller than a pack of cigarettes in white it is very class, it has all the tips connectors, like the other lacks the USB AC adapter, but when you know the ... if not buy this:; qid = 1418902502 & sr = 8-1 & keywords = + USB + power adapter
frankly very good product of this brand I recommend !!
upp = I add to those doubts: this battery is compatible with absolutely all phones that are coming out, given that a legal obligation to standardize all connectors. So ALL PHONES WITH MICRO USB CONNECTOR are and will be compatible. for I-phone, you use the original cable supplied with the such. This says it comes with the battery, the tip Alant on iphone 3 and 4s