I use my smartphone much, therefore the battery is always very fast flat. The Sony battery I always hang them on my TV so that it is always ready for use. Once my smartphone then go out I hang the Sony battery ran. My phone thus starts immediately and I can use it as usual without which I have to wait long. I also noticed that loads of Sony battery my phone very quickly. Within an hour of Sony battery empty and my phone is fully charged. Then I hang it back on my TV and it can charge. Until the battery is empty my smartphone is fully recharged the battery Sony.
Thus, you always have enough juice. Real a great job.
Also works great if you ever have to go somewhere, but your phone can not load. Simply take the battery and you have enough energy during the day.
I'm excited. Therefore, 5/5 stars from me!