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

Here is Why You Need An Adapter

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

Bahamas

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

Type A

Type B

Bangladesh

In Bangladesh, outlets of type A, C, D, G and K are in use.

Type A

Type C

Type D

Type G

Type K