Doing a MacBook battery replacement is not difficult. The first step is determining if you actually need to replace a battery at all. Some people think they need to replace their battery if the charge doesn’t last as long as it once did. If the charge holds long enough for normal use, you can likely keep that old battery. If the length of charge continues to go down, it is likely the time. After you know you need to replace the battery, you need to find a replacement. The most obvious and best choice is a replacement battery from Apple. There are others on the market, but using them can void your warranty.
Once you have a MacBook battery replacement on hand, the actual operation is easy. First, shut the MacBook completely down. Then let it sit at least 30 minutes in order to give the internal pieces time to cool down. When it’s cool, take out all cords except the power cord. Unplug it from the wall, however. The next step is going to be turning the MacBook upside down. Before you do this, lay down a layer of soft cloths such as towels. You want to protect the screen from inadvertent damage. Turn the MacBook over and sit it down on the soft surface.