You Do Need power plug adapter while traveling from Peru to Bahamas.

Here is Why You Need An Adapter

The outlet and plug type used in Bahamas are A and B and in Peru are A, B and C. This is how they look like.

Peru

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

Type A

Type B

Type C

Bahamas

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

Type A

Type B