Apple has updated its support document for the MagSafe Duo Charger to note that its 29W power adapter is not compatible with the charger.
Source
Apple’s 29W Power Adapter Does Not Work With the MagSafe Duo Charger
Call us: +1-246-245-1225 Whatapp Please Always Check With Store For Up To Date Pricing And Inventory Quantities. All prices are displayed in Barbados Dollars.