Sometimes I do small gaming on my MacBook Pro and it discharges quite quickly while running games. I understand that this is normal for every laptop. But in the latest update 10.15.5, there is a "Battery Health management feature" but there is no description of what exactly it does.   So, my question is Is it safe to keep MacBook plugged while it is charged?  This question in my case is applicable for gaming and other heavy programs (Video editing, etc).
6117
My friend told me that I need to disconnect the power cord when the battery is fully charged. Otherwise, I will shorten the life of the battery.  Other people say you should drain it once a month or point out that for long term storage, you should charge it to 50% and then periodically (3 to 6 months) bring it back to 50% and store it again.  I am going to use my laptop at home 90% of the time. So, I plan to have the power cord connected all the time.  I'd prefer to just plugging in my MacBook Pro and letting it be on charge long term and occasionally taking it away from the charger when I'm not at home or my desk.  Are these specific recommendations worth the inconvenience?
98697
I recently ran yes &gt; /dev/null for a 3 minutes to drain my Mac's battery. During that time, the temperature rose to 72 °C and fans spun up to 4000 RPM. I immediately quit the process.   Should I fear that has this damaged hardware or the logic board?
13821
Will my MacBook's battery be damaged if I do not use for next couple of months?  I bought a new Macbook Pro (March 2015) a month back. So far I have not started using it yet. It's charged and box packed as I do not currently have time to set it up for my development work.  Update: It's charged 90%+ but not being used.
49524
I have a MBP late 2011 running El Capitan, recently my battery died (x over the icon and "no battery available" in the dropdown.) I've noticed since then that CPU intensive tasks are very slow, and I read that without a battery macs will throttle the CPU to half capacity.  So now I'm looking for one of two solutions:  1) Either somehow disable the throttling, or  2) Trick the computer into thinking it has a battery.  In regard to the first one I've tried a few things such as described , removing a plist file that supposedly controlled it, but that hasn't helped. Any help would be greatly appreciated, TIA.  Edit: I've looked over the question about a 2006 MacBook, it's similar but I've tried everything outlined there and nothing has worked. I'm curious if there are any new ideas. I think the difference may be El Capitan.
74294
My girlfriend has a Macbook Air.  The power supply is smaller and lighter than the Pro.  It has an output of 14.85V and 3.05Amps.  My Pro Retina has a power supply that is 20V and 4.25 Amps.    Both supplies have the same Magsafe adapter, so the power supplies seem interchangeable at a physical level, but what would happen if one of us plugs in using each other's adapter?    Could damage result from under-powering my MacBook Pro? (like a brownout)? Could damage result from over-powering her Air? (like a power surge)? Will the Macbook Air charge faster with a Pro adapter?
29614
I have found myself in situtations where the internal battery has been used frequently. How do I check its status without diving into the mountain of directories?  NOTE I need to know about the CMOS battery. not the laptop's power supply, so this isn't a duplicate of those questions
55369
I got a brand new mid-2015 MacBook Pro 15", OSX 10.11.3.  Display never turns off even it is configured to turn off after 10 mins in power adapter AND in battery mode. Screen saver (aerial) stays active forever. I tried disconnecting all USB peripherals connected - it did not help.  Any ideas?
56195
I forgot my macbook pro charger at a friends place and I won't have it for a week. I saw that there are 3rd party chargers being sold for half the price of official chargers. Can 3rd party chargers damage my macbook pro? After I get my normal charger back in a week I will be mostly using that one and keep the new one as an extra, so I won't be using it fulltime.
82892
There are many superstitions on what you must never do lest your battery become worthless - and by worthless I mean hold about 16 - 24 seconds of charge. This has happened to every laptop I have ever owned, and I just got a new one, so please help me sort out fact from fiction. Here are some of the things I've heard:   Do not keep your laptop fully charged. You must run it completely down every so often. Do not use your laptop plugged in to the wall. Only plug it in when it needs charge. If you will not be using your laptop for a long period of time, don't leave it at full charge. Do not leave your laptop running 24/7.   The first two I know to be complete fiction: this was true of old batteries such as you might have had in an iPod in 2003, but modern batteries function better when kept at or near full charge. Devices even have circuitry to prevent you from completely depleting your battery, as this is dangerous.  The third point sounds probable, and I'd be interested to know if it was true. However, it doesn't really apply to me because I'm not really the type to leave my laptop alone for a day, much less a "long period of time"  The fourth seems most likely of the above, but only because of causality: I have always done this, and my batteries have always crapped out on me. I've generally treated a laptop like a desktop with a battery backup, and that I can move from one room to another if necessary. The fact that my batteries tend to last less than 30 seconds has further entrenched this behavior. Should I be trying to break this habit?  Are there any other things that ruin laptop batteries? I love that I can actually use my new laptop unplugged :) I'd like to keep it that way.  Update: Additional question: If the computer will be used for an extended period of time plugged in, does it make sense to remove the battery first?  Update 2: I know people with laptops older than mine, who actively use their laptops as much as I do, and their batteries still hold about an hours' charge while mine holds less than 30 seconds, hence my belief that something I'm doing kills them.
120340
Out of nothing, my  became extremely hot while charging. So hot, I could not even touch it.  What could cause it?  I've been using it so I can leave multiple old 85W MagSafe chargers at various places, so I plug my new late 2013 15" Retina MacBook Pro without having to bring a charger.  Edit:  After inspecting for discoloured parts, I saw the flat side of the aluminium surface is a bit discoloured.   This is what I've done after it got hot:   I cleaned everything a couple of times with finger nails and a wooden toothpick (to prevent scratching: electric stuff doesn't like metal fragments). The connector kept getting hot. After turning the connector 180 degrees, it kept cold. If I turned the power plug 180 degrees or 360 degrees, it stays cool too.   Turning 180 degrees was  by  and seems to fix the issue every time this happens.
99052
I have found contradictory opinions on this. Some say Windows users tend to shut down but that it is not necessary, and I tend to do that too. Others say it is preferable to shut down, as it does not take too much time to boot anyway, and that in this way the battery is protected. While others say that it is in fact better not to shut down to often, including for the battery, etc. An interesting opinion - cannot find the link for that now - was that shutting down / restarting serves no purpose for Macs, except when that is needed after installing or upgrading applications or the system, unlike in Windows, where shutting down was (is?) very important. Also, that Macs do periodical system maintenance work during operation and even sleep, which eliminates the need for restart; possibly restarting would even come against all this, etc., and &quot;not shutting down&quot; is in fact a typical differentiating Mac feature. Is this true? I need a competent opinion on this - not just a description of the most common use - preferably reflecting some advice from the manufacturer. I have a Macbook Air.   Update after answer: Although I got , a crucial point in it (that the system has to be shut down, but only from time to time) is not yet clear: how often should I shut down the system. So, I will bring my question down to this formula. As pointed out by that answer, my question cannot be answered in relation to a tangible benefit for the system, but rather in relation to the battery life. So, I guess this last point can be answered by some information on how how is battery life dependent on how often the system is shut down.
99835
From the pmset man page:     POWER SOURCE ARGUMENTS      -g with a 'batt' or 'ps' argument will show the state of all attached power sources.      […] Certain Apple battery calibration tools may temporarily disable   battery charging, even though your Apple portable is plugged into AC   power.      Such tools will never surprise you with this behavior; you will know   it's happening. This state will be reflected in an additional line of   output to 'batt' or 'ps' readings, including the pid of the app   inducing this behavior.       'ChargeInhibit':    1432    So, does any piece of publicly available software exist to force the battery not to charge?
121516
I have a MacBook Pro 15" (mid 2014, running Sierra). Recently, it has started black screening and shutting off shortly after, after a few minutes' use—let's say 3 to 10 minutes. The screen will go black but the LCD backlight will remain on for about 5 seconds, then the laptop will completely shut off.  I have reset PRAM and the SMC. Things I have determined:   The built-in hardware test passes Problem is not tied to my user account (occurs when I'm logged in to another freshly created user) Problem is not tied to my OS installation (I wiped and re-installed) Problem does not manifest itself in Safe Mode or when booted into Windows 10. (Also didn't manifest during OS X re-installation.) Problem does not seem to be overheating: I can game with no issues on Windows, graphics performance and fans are fine.   This behaves like a classic overheating problem, but I'm stumped due to some of the weirdness of it not being an issue in safe mode or Win 10. Any thoughts?
60102
When I charge my iPhone 4 on my laptop, it starts charging but then it keeps going on and off charging even though it's not touched. It charges fine with a plug charger or with any computers I use at college.  What things prevent a Mac from charging a connected iPhone so that charging can be resumed?
66482
My 1.5 year old Dell Studio 15 notebook computer has a battery and I keep it attached to the notebook but 98% of the time I just plug in the power adapter.  Lately when I unplugged the power adapter, the battery was only good for 10 minutes, and a few days ago, when I unplugged the power adapter, the computer simply turned off.  When clicking on the battery icon on Win 7, it says "Plugged in, not charging":    is the battery dead?  Or can Windows 7 have any option to not charge the battery?  It is a Dell Studio 15, I wonder if in such case, it looks like it can be a manufacture's defect, would Dell replace the battery? (if there was a recall, then they probably would, i think).  The notebook is 1.5 year old.
36448
Whenever I lock my screen (using command+control+Q), the display goes to sleep within about 5 seconds. How can I prevent this?  This happens while plugged in, and my screen is set to never go to sleep while on power:    Even if I wasn't plugged in, on battery life, the screen should go to sleep within 2 minutes, not 5 seconds:    I'm on High Sierra 10.13.2.  edit: I gave up on locking with cmd+ctrl+q and just went with enabling my screen saver and setting the system to require a password on screen saver wake.
72497
I wanted to know if there is difference in terms of charging the battery when a MacBook Pro 16" is connected to two monitors via USB-C, both with Power Delivery capability.   In this specific case I am talking about the LG 27UK850-W monitors. The MacBook Pro 16" will be connected via USB-C to both of them and use them as external monitors. Since both can charge it as well, will the MacBook Pro  charge faster while being connected to both or will just one monitor be able to deliver the charge at a time?