It eliminated Ethernet and FireWire ports and the optical drive. It is thinner than its predecessor, made solid-state storage (SSD) standard, added HDMI, and included a high-resolution Retina display. The third-generation MacBook Pro was released in 2012: the 15-inch in June, a 13-inch model in October. Updates brought Intel Core i5 and i7 processors and introduced Intel's Thunderbolt. Called the "unibody" model because its case was machined from a single piece of aluminum, it had a thinner flush display, a redesigned trackpad whose entire surface consisted of a single clickable button, and a redesigned keyboard. The second-generation model debuted in October 2008 in 13- and 15-inch variants, with a 17-inch variant added in January 2009.
Later revisions added Intel Core 2 Duo processors and LED-backlit displays. The 15-inch model was introduced in January 2006 the 17-inch model in April. The first-generation MacBook Pro used the design of the PowerBook G4, but replaced the PowerPC G4 chips with Intel Core processors, added a webcam, and introduced the MagSafe power connector. All models from the current lineup use variants of the Apple-designed M1 system on a chip. It is the higher-end model of the MacBook family, sitting above the consumer-focused MacBook Air, and is currently sold with 13-inch, 14-inch, and 16-inch screens. MacBook Pro (15-inch, 2.The MacBook Pro is a line of Macintosh notebook computers introduced in January 2006 by Apple Inc. 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.
#MACBOOK PRO MID 2015 BATTERY CAPACITY MAC#
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 notebook 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. 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 notebook's charge in one day, and then recharge it fully. When you use your Mac notebook, its battery goes through charge cycles.