My battery is swollen but unfortunately I bought it on November the 7th 7 days outside the range of Oct 2016-2017 and the serial number is out of their range so I have to pay. Can anyone tell me how Apple have decided on these parameters? ??
I do not have special knowledge of how Apple works, but my answer is based on my experiences at other electronics companies.
When there are a lot of failures in a particular System or Subsystem, a group of specialist Engineers is assembled to study the issue and find out why. At a company as large as Apple this may include Engineers from the original design team, as well as manufacturing specialists and failure specialists (yes, there are failure specialist Engineers).
The team looks at the accumulated failed systems or subsystems to determine EXACTLY why the failures occurred. Sometimes they use extended instrument testing, such as examining chips under a microscope. Sometimes they will write new diagnostic software to isolate EXACTLY why the failure occurred. Once they know WHY the failure occurred, and what systems were affected, then they can confidently recommend what measures need to be taken to mitigate the problem.
When a particular set of serial numbers is involved, it is NEVER arbitrary. The team has determined that the failing component or processes were only used over a certain period of time or in a certain subset off all models produced, and therefore the "fix" only applies to that range of dates or serial numbers. (Occasionally they will include slightly more than necessary to make certain all implicated systems are fixed properly.)
There may be failures that appear to be quite similar that occurred very near the cut-off dates. However, the team has determined that failures outside of the specific range are attributable to random failures, not to the failure mechanism they were studying in depth.
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So no, they will not make an exception. After a great deal of research, they have determined there was a deficit, but ONLY in the samples they listed for the program, and no others.
Your failure appears to be a random failure, outside of the program's focus, and is not likely to be covered.
I do not have special knowledge of how Apple works, but my answer is based on my experiences at other electronics companies.
When there are a lot of failures in a particular System or Subsystem, a group of specialist Engineers is assembled to study the issue and find out why. At a company as large as Apple this may include Engineers from the original design team, as well as manufacturing specialists and failure specialists (yes, there are failure specialist Engineers).
The team looks at the accumulated failed systems or subsystems to determine EXACTLY why the failures occurred. Sometimes they use extended instrument testing, such as examining chips under a microscope. Sometimes they will write new diagnostic software to isolate EXACTLY why the failure occurred. Once they know WHY the failure occurred, and what systems were affected, then they can confidently recommend what measures need to be taken to mitigate the problem.
When a particular set of serial numbers is involved, it is NEVER arbitrary. The team has determined that the failing component or processes were only used over a certain period of time or in a certain subset off all models produced, and therefore the "fix" only applies to that range of dates or serial numbers. (Occasionally they will include slightly more than necessary to make certain all implicated systems are fixed properly.)
There may be failures that appear to be quite similar that occurred very near the cut-off dates. However, the team has determined that failures outside of the specific range are attributable to random failures, not to the failure mechanism they were studying in depth.
--------
So no, they will not make an exception. After a great deal of research, they have determined there was a deficit, but ONLY in the samples they listed for the program, and no others.
Your failure appears to be a random failure, outside of the program's focus, and is not likely to be covered.
Thank you for taking the time to give such a thorough reply. It is much appreciated.
The macs earmarked for free repair actually have a faulty component which could have a detrimental effect on the battery. The battery in my Mac charges to 100% drops to 40% in 40 minutes and then the Mac shuts down indicating the battery needs charging. This after only 15 months of use and less than a 100 cycle count. Nowhere near the batteries advertised life expectancy. The batteries should even after 1000 cycles hold 80% charge.
My Mac is being repaired at this moment. Faulty battery or faulty component? I will have my answer when it is returned. Regardless of what the problem is I will probably have to foot the bill. If it is a faulty battery I will be a little annoyed if I have to pay. Should have got the extended warranty because after all this situation is the reason they are offered.
Recall for swollen battery
