1. Login to your e-Services Account  https://www.e.batelco.com/eservices/Login  -  Need help in login? 
2. Click on My Services from the top menu
3. Select the desired number from the Number Selector
4. Go to the Get Add-ons Card
5. Expand the required category
6. Switch ON the Toggle of the required Add-on
   
7. Click on Confirm

NOTE:  For packages, countries and operators details, click on the below:

data add on packages, countries and operators

you will see the below:

•  Package details:

• Countries that we have world data roaming agreement with

• Operators  that we have Data roaming agreement with in a country chosen