Your Apple One Year Limited Warranty includes replacement coverage for a defective battery. Use Apple Diagnostics to test for battery issues.If you're using an Intel-based Mac, it might help to reset the SMC.Shut down your Mac, close its lid for 30 seconds, then try to charge again.If your MagSafe power adapter isn't charging.If your USB-C power adapter isn't charging.If you're using the correct power adapter, make sure that the power adapter isn't at fault: If the power adapter isn't rated for at least the wattage that your Mac requires, it might not charge your Mac reliably. If your battery isn't charging, make sure that you're using the correct power adapter for your Mac. If charging is on hold and you need your battery to be fully charged sooner, choose Charge To Full Now from the battery status menu. This is optimized battery charging, which helps prolong the overall life of the battery. Occasionally the battery status menu in the menu bar might not show a full charge (100%), even after the power adapter has been connected for a long time. It's best to rely on the battery-health information reported by macOS. Some third-party apps also report battery health conditions, but the data they report might not be accurate or conclusively indicate diminished system runtime. In some earlier versions of macOS, battery health might be reported as Replace Soon, Replace Now, or Service Battery, and might appear in the battery status menu instead of Battery settings: Press and hold the Option (or Alt) key while clicking the battery status menu in the menu bar. Service Recommended: The battery's ability to hold charge is less than when it was new, or the battery isn't functioning normally. You can safely continue to use your Mac, but if your battery needs service or its lowered charging capacity is affecting your experience, get your battery evaluated at an Apple Store or Apple Authorized Service Provider, or contact Apple.Normal: The battery is functioning normally.The Battery information shown here includes Battery Health: Choose Apple menu  > System Preferences (or System Settings), then click Battery.

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