Thank you, a good charging bank product should not damage the mobile phone battery. For mobile phone batteries, the power bank is a power source, and there is no difference between plugging in the charger and charging the battery. Mobile phones use lithium batteries, afraid of overcharging and overcharging, especially overcharging, and rapid charging and discharging of large currents will also have a greater impact on the life of lithium batteries.
Of course, some charging treasure products will provide a higher voltage, will charge the battery with a larger current, then this product will have a certain impact on the battery life. In addition, the battery product has a service life, with the increase of use time, it will naturally slowly to its product life end period, reflected in the battery the most obvious is the gradual reduction of the total available power, the mobile phone is the reduction of standby time, which is an inevitable process. Good battery products and reasonable use of batteries can only ensure that the power of a battery product decays at a slower rate, rather than an obvious decline in power.
The battery should be replaced in time when it reaches the end of its service life.