The recently revamped MacBook Pro is a great bit of kit, but it's been unable to escape concerns over battery issues.
Shortly before the festive period, the high-end laptop had the ignominy of becoming the company's first machine not to be rewarded a seal of approval from influential tech blog Consumer Reports.
Citing ‘wildly unpredictable’ battery life issues, Consumer Reports’ damning verdict suggested the laptop’s battery would last anywhere between 3.75 hours and 19.5 hours.
Now, however, Apple has hit back and claimed that the Consumer Reports battery tests were flawed from the off.
The iPhone and iPad maker has suggested the variable battery performances were caused by a bug unlikely to affect many actual consumers.
Instead, the company has suggested that an obscure issue in the developer build of websites accessed through Safari triggered the issue.
The bug has since been rectified.
In a statement, Apple said: “We learned that when testing battery life on Mac notebooks, Consumer Reports uses a hidden Safari setting for developing web sites which turns off the browser cache... We have also fixed the bug uncovered in this test."
The iPhone and iPad maker added: “[Consumer Reports’] use of this developer setting... triggered an obscure and intermittent bug reloading icons which created inconsistent results in their lab.
“After we asked Consumer Reports to run the same test using normal user settings, they told us their MacBook Pro systems consistently delivered the expected battery life.”
If you've been experiencing similar fluctuations in your MacBook Pro's battery performance, updating your Safari browser could help improve your battery life.
The bug fix is currently available only to those who are signed up to Apple's Beta Software Program
Consumer Reports has confirmed it will retest the MacBook Pro and update its findings accordingly.
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