New MacBook Pro Batteries Got Less Battery Power
A post from RyanBlock.com confirms that the new MacBook Pro batteries got less power than the old ones. The old battery was rated at 5600mAh/60Wh, but the new ones are rated at 4700mAh/50Wh, which is about 16% less.
This explains why you now need to use the integrated Nvidia GeForce 9400M on the new Pro to get the same five-hour (rated, not real world) battery life as you did with the previous-gen Pro’s 8600M GT, despite its use of more energy-efficient DDR3 memory (which would negate drops from the faster FSB) and the same processor clock speeds.
According to Ryan, your batteries degrades faster than the previous ones and you’ll probably have to a buy new one faster and more often, since the pool of energy is smaller to start with. [RyanBlock]
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