You Do Need power plug adapter while traveling from Saba to Malawi.

Here is Why You Need An Adapter

The outlet and plug type used in Malawi is G and in Saba are A and B. This is how they look like.

Saba

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

Type A

Type B

Malawi

In Malawi, outlets of type G are in use.

Type G