The company tested Apple's 13-inch MacBook Pro with Touch Bar, 13-inch MacBook Pro without Touch Bar, and the 15-inch MacBook Pro with Touch Bar. All three machines were bought at retail.
Despite stringent controls, battery life tests varied wildly from one trial to the next.
For instance, in a series of three consecutive tests, the 13-inch model with the Touch Bar ran for 16 hours in the first trial, 12.75 hours in the second, and just 3.75 hours in the third. The 13-inch model without the Touch Bar worked for 19.5 hours in one trial but only 4.5 hours in the next. And the numbers for the 15-inch laptop ranged from 18.5 down to 8 hours.
Consumer Reports says those were just a few of the results and they tested battery life on the laptops repeatedly.
Interestingly, Apple recently removed the battery life remaining estimates in macOS Sierra claiming that they were 'unable to keep up with or provide accurate information for users on the newest machines'.
Data from the tests was shared with Apple but the company has yet to comment. Please follow iClarified on Twitter, Facebook, Google+, or RSS for updates.