After 60 minutes of charging, battery level is 75%. After 90 minutes, 90%. After 105 minutes, 99%. After 110 minutes, 100%. In all tests, the laptop was OFF while charging, I briefly powered it ON at those time intervals only to look at the battery level and immediately turn it OFF to let it continue charging. 3. According to Apple: Full charge capacity: Measured in mAH (milliampere-hours), this refers to the amount of power the battery is capable of containing, less the energy required to shut down the device. This number lowers as the battery becomes depleted with usage and age. You didn't indicate your device details so I can't tell you if that Important Battery Message: "The battery's capacity is significantly reduced. To restore capacity, please check your service options". Not sure what to do about this. Ever since the last software update to my Macbook Air, the battery life is significantly impacted. Any suggestions would help! Limited storage capacity. The 2015 Apple MacBook Air 11-inch ($899 as tested) is all about ultraportability. With its 38-watt battery, the MacBook Air 11-inch lasted 11 hours 33 minutes on The most confounding piece of the puzzle is that while the MacBook Pro M2 has an identical battery to the Pro M1 (58.2WHr), the Air M2 has a 52.6WHr battery that is slightly larger than the 49 Specifications One Year Guarantee California Residents: Prop 65 WARNING Replacement Guides MacBook Air 13" Early 2014 Battery Replacement Use this guide to replace the battery. Note: If 15 minutes Moderate MacBook Air 13" Early 2015 Battery Replacement Click the Apple icon from the menu bar and choose the "System Preferences" option. Here, go to the "Dock & Menu Bar" section. Now, from the sidebar, choose the "Battery" option. Here, click the checkmark next to the "Show Battery Percentage" option. Ideally, you will want your battery to hold at least 80% of its original capacity. If your battery's maximum capacity is below 80%, you will see a noticeable difference in battery life when using your MacBook. Therefore, consider taking it in for service. Under regular use, you can expect your MacBook to lose 10% of its maximum capacity each BNaU.