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

Here is Why You Need An Adapter

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

Balearic Islands

In Balearic Islands, outlets of type C and F are in use.

Type C

Type F

Falkland Islands

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

Type G