Tip 4: Check the battery
If the above tips do not resolve the issue, you may need to check the battery. Go to the Apple menu and click on “About this Mac” and then “System Report.” Click on “Power” and check the “Condition” of the battery. If the condition is poor, you may need to replace the battery.
Further, you can check the status of your battery by having the glimpse at the four states:
Where normal state means the battery is functional
Replace soon which states that the battery has the lesser capacity of charging at its optimum and it must get replaced immediately.
Replace now means that the battery must get changed immediately.
Service Battery, this is an alarming message conveyed by the MacBook which basically conveys that the battery must be replaced to prevent the further damage.