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MacBook Pro 2012 [Quick Question]


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#1 RyanKeslord17

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Posted 07 October 2012 - 10:22 AM

So I'm just wondering about my MacBook and it's battery life in terms of charge cycles and how much is too many cycles. Right now, I mostly use it at home, which is not that much and I only have to charge it once every three days. When doing some searches, some people have said if using it only at home, just leave it plugged in, as it doesn't charge after it reaches 100%. Is this true? Also, once I shut it down, won't it go to 99% tomorrow when I turn it on again and it will start charging again? Or does that even matter since it's such a minimal amount?

And, what is a charge cycle? Is it just when you fully drain it and then fully charge it? Or is it one cycle even when you just charge it from say 50-100%?

Thanks!
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#2 Nevlach

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Posted 07 October 2012 - 10:26 AM

Between plugging it in and unplugging it it will start charging again after it drops below 95%.

I don't think you have to worry about anything here.
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#3 RyanKeslord17

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Posted 07 October 2012 - 10:41 AM

Between plugging it in and unplugging it it will start charging again after it drops below 95%.

I don't think you have to worry about anything here.


I see. So are you saying I should leave it plugged in then?
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#4 Opmac

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Posted 07 October 2012 - 10:41 AM

Try reading this: http://www.apple.com.../notebooks.html




For proper maintenance of a lithium-based battery, it’s important to keep the electrons in it moving occasionally. Apple does not recommend leaving your portable plugged in all the time. An ideal use would be a commuter who uses her notebook on the train, then plugs it in at the office to charge. This keeps the battery juices flowing. If on the other hand, you use a desktop computer at work, and save a notebook for infrequent travel, Apple recommends charging and discharging its battery at least once per month. Need a reminder? Add an event to your desktop’s iCal. When your battery no longer holds sufficient charge to meet your needs, you may choose to replace it. If your notebook came with a built-in battery, you should have the battery replaced only by an Apple Authorized Service Provider.


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#5 GoaltenderInterference

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Posted 07 October 2012 - 05:38 PM

The instructions that came with my laptop (not a MacBook) say that if you leave it plugged in for a long time, it's best to take the battery out.
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#6 StevenStamkos

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Posted 07 October 2012 - 06:12 PM

You don't need to worry about it unless you are not unplugging your MacBook for over half a year lol. MacBooks are the gods of laptops. They last forever.

But technically what happens if you leave it plugged in is: after it hits 100% charge, it will automatically reroute the circuit to the wall plug. So it basically disconnects the battery so it's unaffected by the charger until it gradually loses enough charge.

Edited by StevenStamkos, 07 October 2012 - 06:12 PM.

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#7 ChenWei91

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Posted 07 October 2012 - 06:46 PM

You don't need to worry about it unless you are not unplugging your MacBook for over half a year lol. MacBooks are the gods of laptops. They last forever.

But technically what happens if you leave it plugged in is: after it hits 100% charge, it will automatically reroute the circuit to the wall plug. So it basically disconnects the battery so it's unaffected by the charger until it gradually loses enough charge.


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