Leaving the Macbook plugged in w/battery out. Is it safe?

I typically use my macbook on my external hdtv so i keep it plugged up with the battery removed. Is this safe to do or should i always unplug it when i'm not useing it.
it just a hassle to plug it up everytime i want to use it. And i took the battery out because i'm not using it in the traditional method.
Should i be concerned if i leave it plugged up? Will this do any harm?
thanks
~chris

cpage76 wrote:
I typically use my macbook on my external hdtv so i keep it plugged up with the battery removed. Is this safe to do or should i always unplug it when i'm not useing it ... And i took the battery out because i'm not using it in the traditional method.
Safe? Well, it won't harm the computer, but if you have important files on the computer, you're putting them at risk. If the power is lost - if there's a power outage, brownout, or you accidentally pull the power cord out, you're shutting the computer down in a very "harsh" manner - essentially crashing it - so your hard drive would undergo undue stress and wouldn't get the safe shutdown it requires to help safeguard your files.
I highly recommend you keep the battery in. If you're permanently connecting it to the mains - which is fine - the battery isn't going to run down, so you're not wearing it out by having it connected.
Matt

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Hi guys,
do you think its better that i just leave my macbook plugged in all the time *if i can* ... or should I just use the battery whenever I feel like it? I know that your supposed to do at least one full drain with your computer at least once a month... but If i'm going from room to room and just feel like not dragging around an adapter, is it bad for the battery? or is it good becasue I'm using the battery more and keeping the parts moving and warmed up rather than just never really using it?
Like right now my battery status is "not charging" even though its not plugged in!
the only reason I like to keep it plugged in a lot is because I record music a lot, and can't really do that on a low battery power (if the macbook shuts off I could lose data)
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torsenstarrow wrote:
Hey lyssa, that does help a bit. What about how my battery drains to under 95 % even when it's plugged in... and then it charges back to 100% in like 20 minutes... is that bad for the battery, because it happens when its plugged in (it slowly drains to below 95%... will that add battery cycles onto my laptop?
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I won't bore you with the details, but hybrid car batteries are designed to stay between 40-75% of theoretical capacity. By avoiding the extremes of charge and discharge, they can go through hundreds of thousands of these partial charge-discharge cycles while a standard use battery might go through maybe under 1000. The overall amount of energy cycling through a hybrid car battery would be maybe 30-50 times more than a standard use battery. Of course MacBook charging system isn't designed for that kind of use.
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https://discussions.apple.com/community/notebooks/macbook_pro
https://discussions.apple.com/community/mac_os
http://www.apple.com/support/macbookpro

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Sure, you can leave the display plugged into the socket, provided you turn OFF the display itself. There must be somewhere some switch or touch button that will turn the display OFF.
Usually, those displays use a lot of power, so it's better to save
I shall add an unrequested piece of advice: if you don't this already, please use some kind of electrical surge protector
<http://en.wikipedia.org/wiki/Surge_protector> to connect your computer, display, printer, router, etc to the wall socket.

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MacBook reduces processor speed when battery is removed while operating from an A/C adaptor
Apple portable computer's battery does not show a full charge in Mac OS X
Apple Notebook Batteries
Lithium-ion Batteries
MacBook: How to remove or install the battery
Determining Battery Cycle Count
Use and cleaning of MagSafe power connector
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•Mac notebooks: All about batteries - Apple Support
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•Find the right power adapter and cord for your Mac notebook - Apple Support
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http://www.apple.com/batteries/maximizing-performance/
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Welcome to the Apple Support Communities
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Thanks,
Matt M.

Can i replace the macbook pro (mid 2012) battery

myself or have to take it to service center because its buit in??

Additional ram uses a negligible amount of energy so the usage issue is more likely related to the applications being run and things like the screen brightness level, radio, i.e., Bluetooth, wireless, devices and their load.
And batteries do degrade over time so watching them is usually the easiest thing to do.
Also, look at your charging habits...deep discharging of a Lithium-Ion battery on a regular basis is actually detrimental to the life of the battery. Despite some of the guidance you will see around here, a Lithium-Ion battery that is only discharged to 50% before being recharged will have three to four times the lifetime of a battery discharged to shutdown. Leaving the battery on the charger most of the time does not hurt it, just take it off and discharge half way once or twice a month so it gets some exercise.
Leaving the MBP on the charger will not overcharge the battery...they have circuitry that stops the charging when the battery hits 100% and then restarts to top off the battery when the charge trickles down to 93-95%.
So, just keep an eye on the usage patterns and see how it is doing.

The macbook plugs

What are the 5 plugs on the outside?
I know there are 2 USBs, a FireWire, and a mini-Dvi, but what is the other one?
And there is a headphone jack, but what is the other jack?

Look in your User Guide - Chapter 2 I believe.

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Does anyone know what the pros and cons are?
Many thanks.
Message was edited by: Nicholas Dawes

I'm running the stock GT120 as well as the Quadro FX 4800. I also have an eSATA controller installed in one of the PCIe slots and have one free slot for future expansion. The Quadro card requires a double slot so I have it installed at the bottom.
FYI - I'm also running three displays. If you don't require three, you'd probably be better off with the single card.
As for driver issues, I have none as both are nVidia cards.

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I have been told by the local Apple Store Genius Bar that I should cycle the Lithium Ion battery down and then charge it back up to increase battery life. I thought that this was not necessary with a Lithium Ion battery. What is the truth here? I use my MBP on my desk most of the time and it is easier to keep it plugged in.
Does it really affect battery life?

tonefox,
Some of your recommendations are out of date:
It is suggested you run it down until the phone powers down and then charge it right up to 100% occasionally. But that is only to recalibrate the oercentage readout.
OP has an MacBook Pro, not a phone, and User calibaration ceased to exist with the 2009 MacBook Pros according to this article:
http://support.apple.com/kb/HT1490
To veehbg,
Anna's link to that artilce is very important to good battery life. I've been around here a long time and the number of batteries that failed early from lack of use far exceeds those that failed for any reason when the usage patterns outlined in that article were followed. i try to run my Mac portables on battery for 30 mins to a hour a day to keep thenm exercized. So dar, so good!

Leaving the Macbook plugged in w/battery out. Is it safe?

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