Lithium batteries used today basically have no malignant memory, that is, they do not run out of power, unlike cell phone batteries of the past , which can only use their capacity when charging.
Usually, the mobile phone shows the battery level when it is 20% used. If possible, you can charge it directly when the battery is full, you can unplug the charger after a while.
It must be said that cell phones are pre-charged when they leave the factory. A new mobile phone will have power when it is turned on, which means the battery has been charged and discharged frequently.
Of course, although there is no malignant memory in mobile phones, there is a limit to the number of times it can be charged. Use the phone as long as possible and charge it below 10% to reduce thecharge. number of times it needs to be recharged.
The 1st floor is correct. Lithium batteries must not be exhausted before they can be charged. Usually they can be charged if less than 30% (usually cell phone). will cause low battery). Scientists experimented with lithium battery, the cycle time between 30% and 90% is longer than others. If it reaches 100% and continues to charge for a long time, it will easily reduce the power. Lithium batteries are not nickel batteries and there is no memory effect. There is no need to charge during the first three periods. . .