You Do Need power plug adapter while traveling from Czech Republic 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 Czech Republic are C and E. This is how they look like.

Czech Republic

In Czech Republic, 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