Why extra ac adapter for notebook

[Novice 22]

Why do I need to purchase extra ac adapter for notebook ?

 

[Someone Somewhere]

You shouldn't need to; it would normally come with one.

 

[PsyKhiqZero]

Some people like to have an extra one for travel. Leave one at home in case you lose the other. But a laptop will come with a power cord, so you don't NEED to buy another.