Sandisk Solid State Drive Extreme on MBP 13" 2012

I recently replaced a Samsung 830 120gb  with a Sandisk Extreme 240 gb drive. I am wondering why I have a significant decrease in battery life. On a Samsung 830 I was able to get 6 hours of battery life, and if not 7. On the Sandisk Extreme however, the battery life decreased to roughly 5 hours of battery life or less. I reinstalled the exact same applications on my Sandisk as on the Samsung. On Newegg it advertises Samsung with 0.12 W (active) and Sandisk with 0.6 W (active). Is there a signifcance in the change in my battery life because of that? Can someone give me insight in this? I need to improve my battery life.
Thank You!


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    Keyboard Description
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    The master software that controls hardware functions and provides a platform on top of which any software applications will run. Commonly used systems include Microsoft Windows and Mac OS X for computers and Palm OS and Microsoft Windows Mobile for PDAs.
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    Best Buy PC App
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    Blu-ray Player
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