Of course, as the age of the Mac grows, you will not get enough battery life due to natural degradation, but as we discussed in this article on how to save the battery of the MacBook, you can take many measures to minimize the battery life. Life. For this reason, a three-year MacBook Air may not last 12 hours as Apple claimed in the past, but it should last for a reasonable period of time.
Please click to enter a picture description.
If the Mac doesn't have enough battery life just because of a fault, or it may mean that the battery needs to be replaced or repaired. Fortunately, it is easy to find out whether there is something wrong with the battery.
Your MacBook constantly monitors the battery. To view the current status:
Please click to enter a picture description.
Hold down Alt/Option.
Click the battery charging icon next to the clock in the upper right corner of the desktop.
After the heading "Condition" at the top of the menu, you will see one of the following four kinds of battery status information: normal, about to be replaced, immediately replace and repair the battery.
Please click to enter a picture description.
Obviously, "normal" means the battery is healthy. Perhaps surprisingly, Replace Soon is only a warning, not a requirement. The MacBook can still work normally on battery power, although its battery life is significantly shorter than that of a new battery.
Please click to enter a picture description.
However, the last two states-"Replace immediately" and "Repair the battery"-indicate that the battery is about to run out. ?
If you want to know more, you can download a third-party battery monitoring application, such as CoconutBattery with coconut flavor or FlipLab's battery health. These will monitor and automatically limit energy-saving applications running in the background. Coconut battery can measure the maximum capacity of the battery compared with the original capacity of the new battery, and even compare the performance with similar models of batteries.
Please click to enter a picture description.
Applications like the free CoconutBattery (pictured above) allow you to enter technical details to get more detailed information. Apple did not explain how it produced the battery life status reading, but it may charge the battery by measuring the maximum capacity that the new battery can currently hold.
Please click to enter a picture description.
CoconutBattery will display these two numbers in milliampere hours (mAh). For example, the MacBook Pro, originally designed with a capacity of 5,400mAh, now only stores 3,700mAh, with a capacity loss of over 30%. But the MacBook will still report that the battery is full 100%. It won't last as long as before, and there will almost certainly be a "replacement is coming" status message.
Please click to enter a picture description.