It will indicate a full charge based on the battery's condition. But the full charge is less than full capacity. the batteries five years old. It's done. Get a new one because getting stuck is going to cost a lot ,more. Few actually know how to properly test a battery, nor do they have the equipment. My wife's died with no warning in her 2010 escape. Yret the one in my 08 was fine until the day I traded it a few months back.