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Does leaving my macbook on alle night damage th...

I usually fall asleep while watching netflix, which means my macbook pro is on all night (charging). I have just replaced my battery, because the old one couldn't be charged and I suspect it was ruined because I left my macbook on all night almost every night. I would like to avoid ruining my new battery, so I was wondering if that could be the cause

Just leaving your Mac notebook running on battery overnight or any time will not "damage" the battery. It shouldn't damage the battery even if you are charging the notebook with the supplied power brick. However, it is best NOT to leave the charger connected constantly as the battery is designed to be fully discharged/recharged over time.

You need to daily since you keep it plugged in daily like that - MAKE SURE you use battery power to drop below 80%, I would go to 50% and below that occasional to 24-40% and recharge ie when you fall asleep leave it plugged in... in addition I would also once a month allow it to drain until it turns off and then wait 5 hours and fully charge a couple hours after the green light goes back on.

You can leave the computer plugged in all the time if you wish. Advice not to leave the computer plugged in as it will damage the battery or charging circuitry is based on old outdated information. I leave mine charging all the time when near a power source.

Hi,

Today’s lithium ion batteries are completely different than batteries of the past, and some people still live in the past regarding battery care, such as advising you to “calibrate” your battery, which is totally unnecessary, or don’t leave your Mac notebook plugged in all the time. Given that, there are vastly differing opinions on how to treat Mac batteries.

If you run using the power adapter as much as possible, then you're saving "cycles" of which your battery has limited amount of (Apple claims “up to 1000” cycles). Age will also take its toll on a battery, no matter the usage. Some people will recommend running the battery down about 75% at once a month to keep it "exercised" which Lithium Ion batteries do need some of, but Apple has built that in to their charging circuit; after charging to 100% the battery won't charge anymore until it runs down to about 95% (which will occur naturally over time even with it plugged in), then charge it back up to 100%, etc.

Apple doesn’t say there’s anything wrong with leaving your Mac notebook plugged in all the time, nor do they say you need to discharge it ever (unless you’re not going to use your Mac portable long term) so they don’t think it’s a problem either: https://www.apple.com/batteries/maximizing-performance/

If, on the other hand, you want/need to use your battery with any frequency, go ahead, that’s why it’s there, to make your Mac portable and able to run out in the field with no power supply available.

You can run your Mac on battery for a little bit, then charge it back up to whatever level you want, and repeat this as many times as you want.

Although, in general, "common knowledge" is that it's not good to run down lithium-ion batteries all the way until they die, Apple doesn't say there's anything wrong with running your battery down to the point the OS puts your Mac to sleep.

  In short, you can use the battery any way you want to.

This could absolutely effect your battery health due to over heating but I think that the larger impact is on the monitor and other components.

If you keep your notebook on the charger, you would generally be running off of that power and shouldn't have a serious effect.

If your fans are running then you are likely pushing your processor and/or your gpu rather hard.

I definitely don't recommend it.

Why would the battery overheat when it is not powering the Mac, (you did think this through I assume)

最後更新：2017-11-29 12:08:34

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