Since the release of Mac Intel (but already during the time of the iBook), Apple had to face many problems with the batteries on its portables. Between those that started to inflate, those that did not hold the charge, and those which broke down and displayed an X. These vexations were very expensive and created precedents that made it was relatively easy to exchange a used battery under guarantee.
Since March, they have started to tighten up. This started with the arrival of test software only available for the CMAA. This is now used to test the battery and decides if it must be exchanged or not. The after sales service department is forced to follow this guidance, since the software delivers a code for the return. In the absence of this code, the CMAA have to cover cost of the battery.
Also Apple has since then defined especially strict rules and ev
