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by konstruktors
3411 days ago
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It's 76Wh in 2016 vs 99Wh in 2015 -- a 24% smaller battery. To have the same battery time, it must draw 24% less current than it did with the 2015 model. Secondly, we should always compare watts instead of amps unless we know the batteries have the exact same voltages. For example, for a battery life of 18h it must draw 4.2W on average (76Wh/18h). I don't think that's possible because only the 2016 MacBook uses that little power -- 4.1W (41Wh/10h). |
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619mA * 11.1V = 6.87W
430mA * 11.1V = 4.77W
So it's the difference of about 2 watts between the 2015 MBP and the 2016 MBP, or roughly 30% less consumption.
> I’m impressed that the new MBP will happily sit at a 500 mA power draw for long stretches of time.
It's virtually useless to tell people the amount of current something is using without also mentioning the voltage. I don't know why the author is discussing this in terms of current instead of watts.
5W isn't overly impressive for a laptop. My 2012 Dell (admittedly without retina display, but with 5 year old components) idles in Linux at ~7W with the brightness at 50%. If you close the lid to turn off the display, this will drop to 5W.
So, 5 years, a HDPI display, and Apple is down to 5W.
Anyone with a Dell XPS 13 or XPS 15 who can comment on power consumption? I'm not overly impressed by this number from Apple, it seems par for the course for Intel hardware over the past few years.
The biggest problem for laptop battery life is Windows. My Dell came with Windows 7 and I wouldn't get 3 hours on the 6 cell battery (65Wh). I installed Linux on it and now I can get 6-7 hours comfortably.
Maybe Windows 10 has improved this somewhat, but Windows 7 is terribad for laptop battery life.