Battery LED won't light up when on charger... Please help me!

After I plug my Aspire CF VV+ into the charger in the wall, the blue LED won't light up at all. It flashes purple three times, so I know it's getting power and likely being charged. The charger that came with it is displaying the red light, indicating that it's supplying power to a charging battery.

The problem is that the blue LED light on the battery itself is supposed to stay lit until it is finished charging, and it is not lit at all. This would make it seem like it's been fully charged, but it isn't! I've been using it at work all day... What's going on?!
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