Apple will replace built-in batteries on some 13-inch MacBook Pros
<p>Apple has determined that, in a limited number of 13-inch MacBook Pro (non-Touch Bar) units, a component may fail causing the built-in battery to expand. This is not a safety issue and Apple will replace eligible batteries, free of charge. Affected units were manufactured between October 2016 and October 2017 and eligibility is determined by the product serial number.</p>