
Are the following mentions coreferent?:
<m> battery life </m> in The most innovative feature in the upgrade is a new battery that Apple claims will last up to eight hours on a single charge and can be recharged up to 1,000 times, which means up to a five-year lifespan. 
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<m> battery life </m> in The only hardware release at Macworld Expo 2009 was a predictable unibody upgrade for the 17-inch MacBook Pro, which Apple reports will have an eight-hour battery life. Apple was able to beef up the MacBook Pro's battery by taking advantage of the generous amount of space available in the notebook's enclosure. Apple also claims the new MacBook Pro's battery is more environmentally friendly because it lasts five years and has fewer toxins. 