New battery problem, can anyone help?

Hello,
I recently brought a new battery for my Macbook and for a couple of weeks it seemed to work fine, however, now it doesn't appear to be charging. At the top right of my screen it just says (Calculating...) and the iStat* lights on the battery won't light up.
Battery Installed: Yes
First low level warning: No
Full Charge Capacity (mAh): 5250
Remaining Capacity (mAh): 0
Amperage (mA): 0
Voltage (mV): 9393
Cycle Count: 11
Any ideas on what I can do?
Alex

Welcome to the forums.
Is the battery an Apple battery or an after market battery? You can try this Intel-based Macs: Resetting the System Management Controller (SMC)

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