Higher Capacity Battery upgrade
Can I install the same higher capacity battery from the mid-2013 (13") MacBook Air, in a mid-2011 (13") MacBook Air?
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That's not going to signifcantly change anything it's the more efficient processor and architecture -- which result in significantly improved battery life -- not the battery alone. This happened the last time "significant battery life increase" was announced... hypertheading and other improvements contributed significantly to battery life.
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