HT204054: About Mac notebook batteries
Learn about About Mac notebook batteries
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All replies
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Helpful answers
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Apr 8, 2016 12:22 PM in response to lettyskiby leroydouglas,★Helpful> (option key) System Information>Power
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Apr 8, 2016 12:29 PM in response to leroydouglasby lettyski,Hi,
Thanks for that info. I am looking at the power in Utilities/ hardware, but I can't see where it would tell me what level of its original capacity the battery has. It tells me full charge capacity and the charge remaining but that is not what I need. I need to know if is retaining 80% or more or less of the original battery charge.
Thanks,
Letty
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Apr 8, 2016 12:33 PM in response to lettyskiby lettyski,OK now I see that the cycle count is 237. Does that help?
Letty
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Apr 8, 2016 12:37 PM in response to lettyskiby Courcoul,You can download and use CoconutBattery. The utility carries a database of all known models and will tell you what the design capacity in mAh is, amongst other goodies. In Ye Olde Days of replaceable batteries (by user or otherwise), used to be that Apple warranted 80% capacity at 1000 cycles or three years, whichever was less.
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Apr 8, 2016 12:46 PM in response to Csound1by lettyski,So the math would be what number divided by what number?
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Apr 8, 2016 12:51 PM in response to Csound1by lettyski,Are we talking Coconut Battery info or Apple Power info?
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Apr 8, 2016 12:58 PM in response to lettyskiby Csound1,★HelpfulUse Coconut, it will do the math for you
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Apr 8, 2016 1:04 PM in response to Csound1by lettyski,thanks very much. It appears my battery is "good." Design capacity 96.7%.
I now know to plug it in as much as possible. I was on the old thought process to run it down before recharging.
lettyski
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Apr 8, 2016 1:05 PM in response to lettyskiby Courcoul,Same thing, except Coconut will tell you what the default-when-new is supposed to be for your model. Apple Power tells you the as-is-now, with no reference to the default.


