You Do Need power plug adapter while traveling from Cocos (Keeling) Islands to Sri Lanka.

Here is Why You Need An Adapter

The outlet and plug type used in Sri Lanka is G and in Cocos (Keeling) Islands is I. This is how they look like.

In Cocos (Keeling) Islands, outlets of type I are in use.

Type I

In Sri Lanka, outlets of type G are in use.

Type G

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