You Do Need power plug adapter while traveling from Haiti to Central African Republic.

Here is Why You Need An Adapter

The outlet and plug type used in Central African Republic are C and E and in Haiti are A and B. This is how they look like.

Haiti

In Haiti, outlets of type A and B are in use.

Type A

Type B

Central African Republic

In Central African Republic, outlets of type C and E are in use.

Type C

Type E