The first is cyclic attenuation.
Imagine the battery as a tube. Charging is rolling up and discharging is rolling down. One complete roll up and down is a complete cycle. Half a roll up is half a cycle. After a long roll up, the battery will break down. This is the so-called cycle attenuation. The cycle attenuation is mainly the charging attenuation, which occurs when you roll up.
The second is static attenuation.
In other words, if you leave the battery there quietly, you will break down. The speed of failure depends on the position of the hand. The higher the position of the hand (the higher the power), the faster the failure.
The order of magnitude of the two decay rates is different. As far as the mobile phone battery is concerned, it is basically rolling every day. The damage of cyclic attenuation to the service life is at least one order of magnitude greater than that of static attenuation. So what is our strategy? According to the philosophical common sense of Marxist philosophy to grasp the main contradiction, the first priority should be to minimize the cyclic attenuation and reduce the depth and number of times; The second is to reduce the static attenuation, that is, to reduce the height of the hand.
After describing the above principles, let's look back at the situation of "not used up, such as 50% recharge and 10% recharge". What we want to express should mean that "the static attenuation speed at 10% is slower than 50%".
For most people who use mobile phones, when they are faced with the choice of "should I keep the mobile phone battery at 50% or 10%, they are usually in the following situations:
Case1: "I now charge 50% of my mobile phone. Although the charging line is nearby, I still decided to use 10% to charge."—— This is equivalent to increasing the cyclic attenuation, while reducing the standing attenuation is not worth the loss. Although the discharge from 50% to 10% does not decay, the discharged electricity must be recharged and rolled back. It can't run away.
Case2: "I now charge my mobile phone at 10%, but I don't charge it for the time being. I'm going to charge it to 50% or 100% 2 hours before I go out" - this strategy does reduce the static attenuation and optimize the battery life without increasing the speed of cyclic attenuation. I also mentioned this situation in the "optimal" strategy of the original answer. The implementation of this "optimal" strategy depends on the "smart charger". In order to protect the mobile phone battery with a cost of only tens of yuan, it is not cost-effective to add a smart charger, and consumers do not like it in the market.
