If you're experiencing issues with your mac battery discharging too quickly or getting a message saying "service recommended", try the steps below to see if this resolves the issue.
1. Reset the System Management Controller (SMC)
You can try resetting the SMC if your MacBook comes with a non-removable battery. Macs from around 2009 onward will fall under this category.
Here are the steps to reset the SMC.
1. Shut down your MacBook.
2. Connect the power adapter from your computer to a power outlet.
3. Hold the Shift + Control + Option + Power buttons, then release them.
4. Power up the MacBook, then check the battery status menu to see if the “Service Battery” warning has disappeared.
5. Resetting the SMC often does the trick. If not, move on to step 2 below.
2. Recalibrate the Battery
This method could take you a while, but it’s worth it to fix the Service Battery warning on your Mac.
In fact, Apple also suggests this to help take care of your battery, though the frequency does depend on how often the computer is used.
Here are the steps you’ll need to follow:
1. Charge your battery to 100 percent.
2. Once it’s charged, use the MacBook for about two hours while the charger is still plugged in and turned on.
3. At this point, unplug the charger and use the MacBook until it runs out of battery power. You’ll see a low battery warning on the “Battery Status” menu. The Mac will sleep without warning, and when this happens, turn it off.
4. Wait for at least five hours, then charge the Mac up to full.
This should calibrate your battery.