Macbook shuts off at 28-34% of battery life!

hello, im not sure what the problem is but it shuts off at 28-34% battery life.
i updated the battery stuff and it still does it. It normally tell me if the battery is low like at 7% battery life. I need help!

Just so you know, the battery is considered a "consumable" part. It's not covered by the warranty or an AppleCare Protection Plan. If resetting the SMC and calibrating don't help, they're under no obligation to replace the battery.
That is not entirely true. This is from the Apple Warranty info.
(f) to consumable parts, such as batteries,
unless damage has occurred due to a defect in materials or workmanship;
The problem the OP is describing is not normal. My battery was replaced under warranty and it was doing the same thing. Also in the update it is noted the battery warranty/repair coverage has been extended an extra year for core duo batteries.
Message was edited by: First Magus

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AC Power:
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Disk Sleep Timer (Minutes): 10
Display Sleep Timer (Minutes): 5
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Wake On Clamshell Open: Yes
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Wake On Clamshell Open: Yes
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Remaining Capacity (mAh): 1215
Amperage (mA): 0
Voltage (mV): 12503
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Macbook shuts off at 28-34% of battery life!

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