Why isn't my MacBook not charging?

I've had my Macbook for about year now, and last week i let my battery completely die. When i went to charge it i plugged in my adapter and the adapter shows a green light, which means that the battery is fully charged but it isn't charged, and my battery icon doesn't show anything but an "X"... show more I've had my Macbook for about year now, and last week i let my battery completely die. When i went to charge it i plugged in my adapter and the adapter shows a green light, which means that the battery is fully charged but it isn't charged, and my battery icon doesn't show anything but an "X" in the middle. When i disconnect the adapter my computer turns off, so I'm stuck using my adapter at all times. Does anyone know how i can make my batter start charging again?
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