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Why is the laptop power adapter not compatible?

23 views Yuda Electronic (HK) Technology Co.,Limited. 2018-07-14

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Laptop power adapter is not compatible. Have you ever encountered this situation? In some cases, suddenly the laptop battery is not fully powered, and there is no power adapter, the work has not been completed, this situation is very anxious. Some people may try to borrow other people’s laptop power adapters at this time, but everyone should pay attention to the fact that different brands of laptop power adapters are not compatible.

 

So why is the laptop power adapter not compatible?

 

First, the interface is different

   
Most laptop power adapter brands have different interfaces, which means that other brands of power adapters cannot be plugged into your laptop at all. The difference in interface is relatively safe, because at least you will not plug the power adapter that does not match the current or voltage to power the laptop, causing damage to the computer hardware.

Apple MacBook Magsafe Power Adapter

Second, the voltage is different
   

Different brands of laptop power adapter voltages are not the same, for example: IBM is generally 16V, Dell is 20V, Hp is 18.5V, Sony is 19.5V and so on. It can be seen that even if the power adapter interface is the same, you cannot use different brands of laptop power adapters for power supply.

 

Third, the current is different

   
The current of different brands of laptop power adapters is also different, for example: IBM is 4.5A in general, 3.34A in Dell, 2.7A in Hp, and 4.1A in Sony.

 

In fact, the voltage and current of the same brand notebook power adapter are not the same. Therefore, even if you use a power adapter between the same brand of laptops, you must confirm the voltage and current specifications.(Related articles: Can phone chargers be compatible?)

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