Title: You should know that most mobile phone batteries are lithium batteries now. Lithium battery has a very loud slogan "charge immediately, charge immediately", which means that it can be charged at any time without causing any damage to the battery, and it is not limited by having to be fully charged every time. Because the lithium battery 100% is used, it is not calculated according to the charging amount. For example, if I use 40 batteries this time and I continue to charge 30%, then the next time I use 60 batteries, it will be a cycle. It has nothing to do with your current power.

There was a saying before that the battery is charged with light, which has a protective effect on the battery capacity. In fact, it has been used in Ni-MH batteries before, but it has been basically eliminated because of its limitations.

However, Bian Xiao suggested that it is best not to use the mobile phone battery to turn it off and charge it, so if it is not charged for a long time, it will easily lead to the "dormancy" of the lithium battery, which requires high current activation to continue to use. When charging, try to keep the remaining 20% and start charging.