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by emptybits·11y ago·view on hn ↗
Apple claims 12.5% longer life (from 8 to 9 hours) with only a 4.7% larger battery (95 Wh to 99.5 Wh), and without moving to Broadwell processors like in the 13" rMBP which we know are a big part of its battery life improvement.

So is this 15" rMBP battery life improvement software-driven or new hardware throttling or just wishful thinking? The video card and SSD have changed, but doesn't a full hour of battery life improvement seem optimistic? I guess reviews will expose the truth soon enough...

1 comments
"Rather than 4.7% more capacity being responsible for a 12.5% increase in stated battery life, efficiency gains in the tested OS and software also likely contributed, since last year’s test was with Mavericks and an older version of Safari. Fortunately, those efficiency gains benefit old Macs, too."

Source: http://www.marco.org/2015/05/19/mistake-one (footnote2, at the bottom of the page)