Battery tests conducted on the MacBook Pro recently by Consumer Reports has revealed that the 2016 model of the device has discrepancies in its battery life, ranging from 3.75 hours to 19.5 hours usage time, above other problems. However, Apple has come to the defense of its device.

Apple said that the discrepancies in the test results are due to two different reasons. The company is working with Consumer Reports to understand the cause of the problem. First, Apple believes that the notebooks were tested differently. The second reason was that there could be a bug in the Safari browser.

The Cupertino-based tech firm believes that Consumer Reports tested the device differently, which reflected the disappointing results.

To test the device's battery, locally stored websites were opened in Safari, and the display brightness was set to 500 nits. The time it took the battery to be totally drained after undergoing cycles of web usage was then noted. This test mimics the real world scenario of opening and closing websites, GSM Arena reported.

According to Apple, the other reason for the inconsistencies in the results is that Consumer Reports disabled the caching of website data as well as other features on the browser. Apple took into account the default behaviour of Safari which automatically cache websites. With some of these features disabled, Safari triggered bugs which resulted in battery issues.

After the bug had been patched and the cache was enabled, the battery ran just as Apple advertised the MacBook Pro. Apple is expected to release the patch to the public soon.

"This is the best pro notebook we've ever made, we respect Consumer Reports and we're glad they decided to revisit their findings on the MacBook Pro," Apple said in a statement.