1, first of all, please use the original or reputable brand charger, and try to use a dedicated socket, not the charger and TV and other household appliances common socket.
2, before the battery leaves the factory, the factory has carried on the activation processing, and has carried on the pre charge, therefore the battery all has the remaining electricity. The first 3-5 charges of lithium ion batteries are generally referred to as an adjustment period, and should be charged for more than 14 hours to ensure full activation of lithium ion activity. Lithium ion battery has no memory effect, but it has a strong "Sui", and should be fully activated, in order to ensure the future use of the best performance.
3, if the mobile phone battery placed too long time without the use of mobile phone, the best to the maintenance department to apply for a battery cell activation treatment, after three to five complete charge and discharge cycles of its internal chemicals will be all the "activation" to achieve the best results. Can also use a DC constant voltage regulator, the voltage is 3.7V, the current 780mA reverse connection battery. Note that a touch is released, the most repeated three times, you can, after such treatment, and then use the original charger for "adjustment period" charging.
4, the battery life depends on the number of repeated charge and discharge, in general, a battery can be fully charged and discharged 500 times. Therefore, the battery should be charged as much as possible, so that the battery life will be shortened. When the phone is off for more than 7 days, you should completely discharge the battery of the mobile phone and use it after you have enough electricity.
5, when charging, it is best to first turn off the phone. Because in the process of charging, the phone's circuit board will heat up, and if there is an external call, it may produce an instantaneous return current, causing damage to the parts inside the phone