You Do Need power plug adapter while traveling from Brunei to Maldives.

Here is Why You Need An Adapter

The outlet and plug type used in Maldives are C, D, G, J, K and L and in Brunei is G. This is how they look like.

Brunei

In Brunei, outlets of type G are in use.

Type G

Maldives

In Maldives, outlets of type C, D, G, J, K and L are in use.

Type C

Type D

Type G

Type J

Type K

Type L