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

Here is Why You Need An Adapter

The outlet and plug type used in Nicaragua are A and B 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

Nicaragua

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

Type A

Type B