Apple today announced a voluntary recall of a limited number of older generation 15-inch MacBook Pro units which contain a battery that may overheat and pose a safety risk. The units were sold primarily between September 2015 and February 2017 and can be identified by their product serial number.
The recall does not affect any other 15-inch MacBook Pro units or other Mac notebooks.
Because customer safety is a top priority, Apple is asking customers to stop using affected 15-inch MacBook Pro units.
You can find out if you are affected here.