About battery health management in Mac laptops with Apple silicon
Mac laptop computers with Apple silicon use battery health management, a feature designed to improve the lifespan of your computer's battery.
This article applies only to Mac laptop computers with Apple silicon.
About the lithium-ion battery in your Mac
Mac laptop batteries use lithium-ion technology. Lithium-ion batteries charge quickly, are long-lasting, and currently provide the best technology to power your Mac.
All rechargeable batteries are consumable components that become less effective as they get older, and their age isn't determined only by time. A battery's lifespan depends on its chemical age, which is affected by factors such as its temperature history and charging pattern. As your battery ages chemically, its charging capacity gets smaller.
About your battery's maximum capacity
Maximum battery capacity measures battery capacity relative to when it was new. A battery will have lower capacity as it chemically ages, which may result in fewer hours of usage between charges. Depending upon the length of time between when your Mac was made and when you start using it, your battery capacity may show as slightly less than 100%.
A normal battery is designed to retain up to 80% of its original capacity at its maximum cycle count when operating under normal conditions. The one-year warranty includes service coverage for a defective battery. Apple offers out-of-warranty battery service for a charge.
Your Mac might recalibrate maximum battery capacity after installing an Apple software update. During calibration, it might briefly run on battery power, even when connected to AC power.
How battery health management helps
Battery health management is designed to improve your battery's lifespan by reducing the rate at which it chemically ages. The feature does this by monitoring your battery's temperature history and charging patterns. Based on the measurements that it collects, battery health management may temporarily reduce your battery's maximum charge. This happens as needed to ensure that your battery charges to a level that's optimized for your usage—reducing wear on the battery and slowing its chemical aging.
Learn more about charging your Mac, including Optimized Battery Charging and Charge Limit.
Learn more
Learn what to do if you see "Service Recommended" for your battery.
If you feel that your battery isn't lasting as long as it should, learn how to get service for your Mac.