4pda, article on the repairability of the MacBook Pro.
The answer to the comment that they are replaced by new ones at any breakdown under the warranty.

A1i3n: Yes, they are changing! And not only will they exchange, but they will give another 1 kg gold barrel, keys from Bandley, a trip to the sanatorium, Obama will personally hold his hand, his wife will return, the kidney stones will go away, his son will finish the universe with a red diploma and his aunt will baked.