MacBook battery problem

Before this goes any further- I've already tried the "remove the battery and hold the power button down, then put the battery back in, etc." thing. Not working.

My MacBook keeps saying my battery is not charging. If I press the button on my battery, all five green indicator lights come on, as if the battery is fully charged.

When unplug the MacBook's power cord, the computer goes dead. I haven't been able to find anything to tell me what the problem is. Can anybody help?

Oh- and this is a 2.4 Penryn black MacBook.

 

No- it stays green the whole time.

 

Update: now it's working fine. I don't get it.