You Do Need power plug adapter while traveling from Burkina Faso to Liberia.

Here is Why You Need An Adapter

The outlet and plug type used in Liberia are A, B, C and F and in Burkina Faso are C and E. This is how they look like.

Burkina Faso

In Burkina Faso, outlets of type C and E are in use.

Type C

Type E

Liberia

In Liberia, outlets of type A, B, C and F are in use.

Type A

Type B

Type C

Type F