With the use of the battery, the maximum actual capacity will gradually decrease, and the reduced capacity is the loss of the battery. 0~ 10% battery loss will not affect normal use. If the loss is too large, the battery life will be weak and you can only plug it in.
Capacity recovery:
For some notebook batteries that have been used for a long time, battery loss is inevitable, and the proportion of loss will be high, as high as 30-40%. This directly affects the battery life. It can last for 3 hours before, but it may only last for 1.5-2 hours, which reduces the outdoor working ability of the notebook.
The lost battery capacity can be recovered by deep discharge. The method is as follows: first, start the notebook to enter the system, unplug the external power supply, and use the battery to supply power until the battery is exhausted and automatically shut down.
Then plug in the power supply to charge and turn it on until it is full, then unplug the external power supply again and turn it off automatically until the battery is exhausted. Repeated operation for more than 3 times can repair the battery, and the capacity of the battery can be restored to a certain extent.
This method is not recommended for users who buy new notebooks. In fact, the loss of the battery is less than 10%, which does not affect the normal use. This method of deep discharge can be used in the case of long battery life, large battery loss and obviously shortened battery life.