Sudden shutdown when not plugged in

I have found others that have had this issue but I have not found a satisfactory answer to the problem. My MacBook no is no longer able to operate without being plugged in. After about 5 mins of operation with just the battery and not being plugged in. It's a hard shutdown where the computer just has a complete power loss (screen goes black and motors stop running). It operates normally when plugged in though. The battery is fully charged also.
Is it safe to do an SMC or battery calibration? Might I have data loss? If I take it to Apple, what might they say?
Here's my info:
Battery Information:
Battery Installed: Yes
First low level warning: No
Full Charge Capacity (mAh): 3404
Remaining Capacity (mAh): 3283
Amperage (mA): -785
Voltage (mV): 12318
Cycle Count: 206

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