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12V2A power adapter manufacturers will show you whether the nominal voltage of the power supply is much higher than the voltage of the laptop battery


12V2A power adapter manufacturers tell you that first of all, what you need to know is that the power supply for notebooks is different from the battery for notebooks. Battery-powered, the output of the battery is pure DC.

12V2A power adapter manufacturers tell you that first of all, what you need to know is that the power supply for notebooks is different from the battery for notebooks.
Battery-powered, the output of the battery is pure DC, very clean, the voltage of the battery is neither possible nor necessary to be designed very high, the chemical characteristics of the lithium battery determine that the output voltage of a cell can only be around 3.6V, so Many batteries are connected in three stages, and 10.8V has become a very popular battery voltage. The 12V2A power adapter manufacturer tells you that the nominal value of some batteries is slightly larger than the integral multiple of 3.6V, such as 3.7V or 11.2V, etc., in fact, it is to protect the battery.

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For power supply, the situation is more complicated. First of all, it is necessary to further stabilize and filter the added voltage to ensure stable operation when the performance of the power supply is not very good. The stabilized voltage is divided into two parts, all the way to power the notebook. The manufacturer of the 12V2A power adapter tells you that there is another way to charge the battery. The part that supplies power to the notebook is the same as when the battery is powered, and the part that charges the battery needs to pass through the charging control circuit of the battery before it can be added to the battery cell. The control circuit can It is very complicated, so the power supply voltage must be greater than the cell voltage to have sufficient capacity to supply to each unit of the charging control circuit. In the end, the voltage actually applied to the cell will never be the nominal voltage of your power supply. Don't worry.
The 12V2A power adapter manufacturer tells you that a suitable power adapter requires safety certification, and a power adapter with safety certification can protect personal safety. To prevent electric shock, fire and other dangers.

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