You Do Need power plug adapter while traveling from Kenya to Botswana.

Here is Why You Need An Adapter

The outlet and plug type used in Botswana are D and G and in Kenya is G. This is how they look like.

Kenya

In Kenya, outlets of type G are in use.

Type G

Botswana

In Botswana, outlets of type D and G are in use.

Type D

Type G