You Do Need power plug adapter while traveling from Vatican City to Chad.

Here is Why You Need An Adapter

The outlet and plug type used in Chad are C, D, E and F and in Vatican City are C, F and L. This is how they look like.

Vatican City

In Vatican City, outlets of type C, F and L are in use.

Type C

Type F

Type L

Chad

In Chad, outlets of type C, D, E and F are in use.

Type C

Type D

Type E

Type F