If you dismantle a lithium battery (not recommended), you will see the following;
- Li-ion cells: They can either be prismatic, cylindrical cells, or pouch cells (aka lithium polymer).
- Battery Charge State Monitor: This is a small computer that controls the charging process of the battery.
- Voltage tap: Tasked with monitoring the energy capacity of individual cells of the batteries.
- Notebook Connector: Allows smooth flowing of information and power in and out of the battery.
- Regulator Circuit and Voltage Converter: They maintain safe levels of current and voltage.
- Temperature sensors: For monitoring the temperature of the battery.