I have discovered the cause of short battery life and the other shocking thing is that it is related to the Lenovo Ultrabay adapter. I have studied this thing very carefully and then only I am saying this. It seems that that additional drive is connected to DVD SATA port, but the BIOS is not exposing the P-state perfectly. The thing is that windows is not able to scale the frequencies and the result for this is that your CPU is running at the highest frequency.
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