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Will having my Macbook Pro plugged in all the time decrease my battery life?
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jonursenbach's pick
Trying to preserve the longevity of your battery will make you crazy. Just use it how you want to and be prepared to replace it in 2 years.
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It's debatable. My usage vector tends to leaving machines plugged in most of the time, and sporadically used - as I alternate between multiple machines. And what I've noticed with the unibodies is that in the times that the batteries have died, they've died well short of the 1000-cycle claim - in fact, more often than not in the 100-cycle range. I'm assuming that Apple's claims as usual are BS and that you do have to treat these 'revolutionary' unibody batteries like regular Li-Ions - i.e. conditioning discharges, etc for optimum life.
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Actually, the MacBook Pro is one of the few laptops that will last you over 2 years if you handle it with case and based on your usage.
The way the MacBook Pro power adapters are designed, they don't overcharge your laptop battery like most Windows based laptops do. If your MBP battery is at 100%, the light turns green which means it is preventing feeding an excess amount of charge to your laptop.
TL;DR: Apple designs their notebook chargers in a way so that you don't have to worry about plugging/unplugging your charger when your laptop is at 100% battery.
The way the MacBook Pro power adapters are designed, they don't overcharge your laptop battery like most Windows based laptops do. If your MBP battery is at 100%, the light turns green which means it is preventing feeding an excess amount of charge to your laptop.
TL;DR: Apple designs their notebook chargers in a way so that you don't have to worry about plugging/unplugging your charger when your laptop is at 100% battery.
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They're both right, all you need to really make sure of is to never let it go completely, utterly, hopelessly dead. Li-ion batteries don't like that.
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