How to repair laptop battery after loss

The laptop battery is the driving force of the notebook. If the battery consumption of the notebook is too large, the battery life of the laptop battery is greatly reduced. Many users complain that their notebook's battery life is too short. If it is used for a long time, the battery life of the laptop will be relatively weak. In this case, we can use deep discharge to restore the notebook's battery capacity.

1.       The notebook "battery loss" is what is going on

The notebook's lithium-ion battery has a design capacity, this data can be seen on the battery label, some are expressed in "mAh", such as "4400mAh", and some are expressed in "watt hour" Such as "23Wh". This capacity value is the theoretical value of the maximum capacity of the battery. With the use of the battery, the maximum value of the actual capacity will gradually shrink, and the reduced capacity is the loss of the battery. For example, the theoretical capacity of my laptop battery is 4400mAh. After using it for a period of time, the actual maximum capacity is now 4200mAh, then the battery loss is (4400-4200) / 4400 × 100% = 4.5%. It is normal for battery loss to occur after the battery is in use. The amount of battery loss is directly related to the frequency of your battery. When the external power supply is connected, the battery will be charged first, and will automatically be inactive after being fully charged. Therefore, when using an external power supply, use an external power supply as much as possible to reduce battery loss.

2. Self-handling lithium battery with large battery loss

For some notebook batteries that have been used for a long time, battery loss is unavoidable, and the proportion of loss will be high, up to 30-40%. This directly affects the battery's endurance performance. It can last for 3 hours, and now it can only support 1.5-2 hours, which reduces the notebook's outdoor work ability. Is this battery not saved? In fact, the deep discharge method can restore the lost battery capacity. 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 and turn it on, until it is fully charged, unplug the external power again until the battery is exhausted and automatically shut down. Repeated 3 times or more, it can play a battery repair function, and the battery capacity can be restored to a certain extent.

It is not recommended that users who buy new notebooks use deep discharge to restore the battery capacity of the notebook. In fact, the battery has a loss of less than 10%, which does not affect normal use. This type of deep discharge method can be used when the battery has been used for a long time, the battery is worn out, and the endurance is significantly shortened.

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