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 notebook battery, including its cycle count: Knowing how many charge cycles your battery has, and how many are left, can help you determine when to replace the battery. In this example, it might take several days to complete a cycle.īatteries have a limited number of charge cycles before their performance is expected to diminish. Once the cycle count has been reached, a replacement battery is recommended to maintain performance. You can use your battery after it has reached 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. MacBook Pro unleashes game-changing performance and the longest battery life ever on a Mac allowing users to do more on the go than ever before. 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. This unprecedented combination of system performance, on-battery performance, and battery life sets MacBook Pro apart from every other notebook.

When you use your Mac notebook, its battery goes through charge cycles.

Battery life on macbook pro retna