Under the Hardware section of the System Information window, select Power. The current cycle count is listed under the Battery Information section.
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: Apple officially says the new MacBook Pro is rated for up to 10 hours of battery life. Knowing how many charge cycles your battery has, and how many are left, can help you determine when to replace the battery. Customer safety is always Apple's top priority, and we have voluntarily decided to replace affected batteries, free of charge.
Affected units were sold primarily between September 2015 and February 2017 and product eligibility is determined by the product serial number. 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. Apple has determined that, in a limited number of older generation 15-inch MacBook Pro units, the battery may overheat and pose a fire safety risk. 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.