Main Battery Explained
Any laptop computer has a battery pack which provides power to the laptop while it’s not connected to the wall-plug through AC/DC power adapter. Laptop batteries come in many different shapes and they are model-specific.
The laptop battery life depends upon many conditions and circumstances: screen brightness, intensity of running programs, the temperature of the working environment, etc…
The same battery could last longer in the same laptop if you optimize the power usage settings in the control panel. You can lower screen brightness, reduce CPU processing speed, chance cooling method, and other settings available on your laptop. Some of these settings could be changed only through the manufacturer’s power management software.
In most laptops the main battery connects directly to the system board.