@linora80: Why is it said that the magnetic charging treasure is a must-have external battery? Why does everyone have to prepare one? When you go out, as long as you stick the external battery on the back of the iPhone, you can completely get rid of the battery anxiety. Although it has the appearance of a charging treasure But if you look at it as a fast-charging power bank, you may be very disaposted. As the name suggests, this is a real battery, which can protect the health power of the mobile phone and is used as a supplement to the iPhone battery. Look at him from this scene. On the contrary, it will feel simple, easy to use and worry-free.