Apple has announced an USB-C Charge Cable Replacement Program. The company says a limited number of charge cables that were included with MacBooks through June 2015 may fail due to a design issue.
As a result, your MacBook may not charge or only charge intermittently when it’s connected to a power adapter with an affected cable. Apple will provide a new, redesigned USB-C charge cable, free of charge, to all eligible customers. This program also covers Apple USB-C charge cables that were sold as a standalone accessory.
For MacBook owners who provided a valid mailing address during the product registration process or Apple Online Store purchase, Apple will send you a new cable by the end of February 2016. All other eligible MacBook owners should use the replacement process below to receive a new USB-C charge cable.
Affected cables have “Designed by Apple in California. Assembled in China.” stamped on them. New, redesigned cables include a serial number after that text. See images below.