You Do Need power plug adapter while traveling from Falkland Islands to Cape Verde.

Here is Why You Need An Adapter

The outlet and plug type used in Cape Verde are C and F and in Falkland Islands is G. This is how they look like.

Falkland Islands

In Falkland Islands, outlets of type G are in use.

Type G

Cape Verde

In Cape Verde, outlets of type C and F are in use.

Type C

Type F