Regarding the "activation" of lithium batteries, a common statement is: the charging time must exceed 12 hours, and repeat the charging for three times in order to activate the battery.
The statement that "charge for more than 12 hours for the first three times" is from the charging method of the nickel batteries (such as nickel-cadmium and nickel-metal hydride), which can be said that it was misinformation. Sampling surveys show that a considerable number of people have confused the two battery charging methods.
There is a very big difference between the charge and discharge of different types of lithium batteries and nickel batteries. The official technical data have stressed that overcharging and overdischarging batteries will cause huge damages to lithium batteries especially liquid lithium batteries. It is best to charge according to the standard time and method, and do not charge for a long period of more than 12 hours.
Generally, the charging method described in the mobile phone manual is the standard charging method suitable for the mobile phone.
In addition, mobile phones or charger using lithium batteries will automatically stop charging after the battery is fully charged, and the so-called "trickle" charging of nickel electric chargers lasting 10 hours doesn't exist.
In other words, if the lithium battery is fully charged, it will stop charging. None of us can guarantee that the characteristics of the battery's charging and discharging energy protection circuit will never change and the quality will be guaranteed, so the battery will be on the verge of danger for a long time, which is another reason why we oppose long time charging.