The main reason why the different brand laptop power adapter is not universal

The laptop power adapter is not universal. Have you ever been in a situation like this? In some cases suddenly the laptop battery is not powering up, and there is no power adapter, and the job is a little unfinished, which is very disturbing and embarrassing. Some friends may try to borrow someone else's laptop power adapter at this point, but you should be aware that different brands of laptop power adapters are not universal, at least for now.

There are three main reasons why different brands of laptop power adapters are not universal:

Interface Unlike most laptop power adapter brands, the interface is different, which means that other brand power adapters are not plugged into your laptop for power. Interface is relatively safe, because at least you do not plug in the current or the voltage does not match the power adapter to power the notebook computer, resulting in computer hardware damage. Voltage is different

Different brands of laptop power adapter voltage is not the same, for example: Generally speaking, IBM is 16v,dell is 20V,HP is the 18.5v,sony is the 19.5V and so on. This shows that even if the power adapter interface is the same, you cannot use a different brand of laptop power adapter for power supply.

Current is different

Different brands of laptop power adapter current is also not the same, for example: In general, IBM is 4.5a,dell is 3.34A,HP is the 2.7a,sony is the 4.1A and so on.

In fact, the same brand notebook computer power adapter voltage and current are also different. Therefore, even the same brand of notebook computer channeling power adapter to confirm the voltage and current specifications.