I've gotten several external batteries in operation, could there where the juice come up empty everywhere I have deposited a battery. Well I found this shell very appealing, but was hugely skeptical about whether the iPhone would also reflect my optical claim. Result: It is enough. Of course, the sleeve bears on something, but I like her still very good. Even better, however, I like the shell of the same manufacturer with the 2400 mAh battery, which is only slightly more expensive, while pretty, has a state function and a bit more power than this. The envelope is processed very valuable and feels good in your hand. The reception of my phone is not affected. The shell heats up only slightly on loading. The loading is quick and swiftly using the supplied USB charging cable. Especially practical, on the one hand, the camera is the front and back not covered, the volume buttons and mute switch are of good use with landscaped shell. Even the plug for the headphones still fits into the socket when the envelope is created.
For me, the charge capacity of the one-time almost complete charging of the iPhone enough.