macbook pro mid 2011 battery replacement

When removing these screws, note how they come out at a slight angle. Remove the following ten screws securing the lower case to the upper case: When removing these screws, note how they come out at a slight angle.

Three 13.5 mm (14.1 mm) Phillips screws.Remove the following ten screws securing the lower case to the upper case:.MacBook Pro (Retina, 15-inch, Early 2013) MacBook Pro (Retina, 13-inch, Early 2013) MacBook Pro (Retina, 13-inch, Early 2015) MacBook Pro (13-inch, 2016, Two Thunderbolt 3 ports) MacBook Pro (13-inch, 2016, Four Thunderbolt 3 ports) MacBook Pro (13-inch, 2017, Two Thunderbolt 3 ports) MacBook Pro (13-inch, 2017, Four Thunderbolt 3 ports) MacBook Pro (13-inch, 2018, Four Thunderbolt 3 ports) MacBook Pro (13-inch, 2019, Two Thunderbolt 3 ports) MacBook Pro (13-inch, 2019, Four Thunderbolt 3 ports) MacBook Pro (13-inch, 2020, Four Thunderbolt 3 ports) MacBook Pro (13-inch, 2020, Two Thunderbolt 3 ports) Under the Hardware section of the System Information window, select Power. The current cycle count is listed under the Battery Information section.Hold the Option key and click the Apple menu , then choose System Information.Your battery is designed to retain up to 80% of its original charge capacity at its maximum cycle count. For best performance, replace your battery when you reach its maximum cycle count.įollow these steps to access information about your Mac laptop battery, including its cycle count: Knowing how many charge cycles your battery has and how many are left can help you determine when a battery replacement is required. This lets your Mac learn your charging routine and wait to charge past 80% until you need to use it. In macOS Catalina 10.5.5 or later, you can turn on optimized battery charging to help reduce battery aging. In this example, it might take several days to complete a cycle.īatteries have a limited amount of charge cycles before their performance is expected to diminish. Once the cycle count is reached, a replacement battery is recommended to maintain performance. You can use your battery after it reaches its maximum cycle count, but you might notice a reduction in your battery life. If you did the same thing the next day, it would count as one charge cycle, not two. A charge cycle happens when you use all of the battery’s power-but that doesn’t necessarily mean in a single charge.įor example, you could use half of your laptop's charge in one day, and then recharge it fully. When you use your Mac laptop, its battery goes through charge cycles.

Macbook pro mid 2011 battery replacement