Battery tests run by CNET Labs fell within our acceptable parameters across multiple runs.
Last month, venerable product testing publication Consumer Reports said it couldn’t recommend Apple’s latest MacBook Pro models because of inconsistent battery life results. On the 13-inch model, CR got battery runs that ranged from 16 hours down to less than four hours.
After working with Consumer Reports to figure out why its tests we not giving the expected results, Apple and the publication on Tuesday announced a possible culprit .
For its battery testing in MacBooks, Consumer Reports used a developer mode in Safari that turned off the browser cache. By itself, that wouldn’t have made the battery life so wildly inconsistent. But that developer mode also contained a previously unknown bug that Apple says affected the battery score.
