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The following are affected:
MacBook Pro (13-inch, 2016, Two Thunderbolt 3 Ports)MacBook Pro (13-inch, 2017, Two Thunderbolt 3 Ports)MacBook Pro (13-inch, 2016, Four Thunderbolt 3 Ports)MacBook Pro (13-inch, 2017, Four Thunderbolt 3 Ports)MacBook Pro (15-inch, 2016)MacBook Pro (15-inch, 2017)
You can then check your batter as follows:
macOS Big Sur: Click the Apple menu in the top-left corner and go System Preferences, and then click Battery, select Battery in the sidebar, then click Battery Health.macOS Catalina or earlier: Hold down the Option key and click the battery icon in the menu bar to show the battery status menu.
If you see “Service Recommended,” then, well, service is recommended. Apple recommends you contact the company for service, where your MacBook Pro will be examined prior to service to verify that it is eligible for the free battery replacement.