Your Mac's battery is a crucial component that powers your device when it's not plugged in. However, over time, the battery may become damaged, leading to issues such as reduced battery life and unexpected shutdowns. There are a few ways to tell if your Mac's battery is damaged:
1. Battery Health: If you're running macOS 10.15 or later, you can check the health of your Mac's battery by clicking on the Apple menu -> System Preferences -> Battery -> Battery Health. Here, you'll see the current maximum capacity of your battery, as well as whether it's considered "Normal" or "Service recommended." If your battery health is "Service recommended," it's likely that your battery is damaged or needs to be replaced.
2. Battery Life: If you're noticing that your Mac's battery life is significantly shorter than it used to be, it could be a sign that your battery is damaged. You can check your battery life by clicking on the battery icon in your menu bar, which will show you the estimated time remaining on your battery. If it's much shorter than it used to be, consider checking your battery health or replacing the battery.
3. Charging Issues: If your Mac is having trouble charging or staying charged, it could be a sign that your battery is damaged. If you're experiencing issues with charging, make sure you're using an Apple-approved charger and cable. You can also try resetting the SMC (System Management Controller) which can sometimes solve charging problems. If none of these solutions work, your battery may need to be replaced.
In summary, keeping an eye on your Mac's battery health, battery life, and charging behavior can help you determine if your battery is damaged and needs to be replaced.