On the surface, the process of battery calibration involves charging and discharging the battery, but its purpose is not to activate the battery as we imagine, as current laptops are all lithium batteries and there is no activation issue. The true purpose of charging and discharging is to help computers re understand the capacity of batteries. So it is necessary to discharge the electricity as clean as possible and let the laptop work at a lower power, so that the correction effect is good.

　　1. In the operating system (using Windows XP as an example), enter 'Power Options' for the laptop. Select 'Power usage plan' as' Always on ', and set' Turn off monitor 'and' Turn off hard drive 'as the shortest time, while setting the system standby to' Never '.

　　2. In the "Alarm" section of the "Power Options" section, cancel all alarm options in order to completely drain the battery until it is turned off.

　　3. After setting up, close all applications, close WIFI, unplug the power adapter, and use battery power. Do not perform any operations until the battery is depleted and automatically shuts down. After discharging, connect the power adapter and fully charge the battery to complete a battery calibration.

　　If the battery life of the laptop is not very clear after calibration, it may be due to the aging of the battery itself. If the battery life of the laptop is normal, it is not recommended to use battery calibration.

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