MacBook Air :: Does Keeping Power Adapter Connected Decrease Battery Life
Jun 16, 2012
I recently bought a Macbook Air and needed some tips to keep it's battery healthy. Now I know that the battery has limited cycles before it goes down to less than 80% charge capacity. But if I keep my adapted connected as much time as possible, to reduce the number of those cycle counts, will it harm it battery? What is best way to keep the battery running healthy for long time - charging it once a day or using it with adapted connected most of the times?
Info:
MacBook Air (13-inch, Mid 2012), Mac OS X (10.7.4)
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May 1, 2012
My battery just went down to 7 percent charge even though it had been connected to the power adapter for quite some time. At least a few days. I didn't notice that the battery wasn't charging. Now it says it is charging again, but every once in a while I notice it has gone to not charging.Â
Info:
macBook, Mac OS X (10.5.6)
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Jul 9, 2009
I just got a new MBP and I want to test how much battery life I am getting. Is there a way to do this other than just manually keeping track of how much time I used it for? A program or something that tracks it for me?
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Jul 8, 2008
I've noticed recently that my screen brightness will suddenly increase or decrease by itself. When I press one of the control buttons it indicates that it is 3 or 4 steps higher or lower (obviously allowing for the fact that pressing a control button moves you one step anyway!) I have the 1.8 SDD. I love the machine....but anyone have any ideas about this. It only happens under battery power.
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Jan 10, 2011
Just want to make sure.
Because one of my adapter for the shaver is dead just by leaving it connected to the power outlet for 2 weeks.
I wonder what you guys do with your MagSafe Power Adapter.
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Nov 6, 2010
There are some SSD that use very little power like the Intel SSD. Do you guys notice a battery life increase with a SSD that is power efficient?
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Jun 28, 2009
In energy prefs on my MBP there's something about graphics at the top where you can select better performance or better battery life. But surely, when on mains power, surely it doesn't use battery?
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Nov 30, 2014
My MacBook Pro 13" (Mid 2010) doesn't go to sleep, when I close the lid or when I try to activate sleep under the Apple menu. I haven't changed nothing in the system preferences. I already tried the following:Â unplugged all USB devices plugged and unplugged external display closed all applications (except of Finder of course) resetted all energy saving preferences deactivated bluetooth checked share options (everything is deactivated)Â
Then I unplugged it from the power supply and after I closed the lid, it went to sleep. Then plugged in power supply again and sleep didn't work.
Info:
MacBook Pro, OS X Yosemite (10.10.1)
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May 14, 2010
Just throwing out my situation and resolution for any who encounter it (When I MRoogle'd it originally, I saw others ran into the same issue)
Specs: 17" i5 Glossy (Mid 2010) - MBP
Issue: Battery Not Charging
Details: In short, with the power adapter plugged in, my MBP would still show as "Battery Not Charging". The light on the adapter would stay green and not change to orange. While it wouldn't recharge the battery, it did provide enough "juice" for the MBP to run off of.Some of the posts on this forum pointed to this being a faulty battery and to take it into the Apple store. In doing so, the helpful Genius diagnosed the problem as the Power Adapter being faulty, not the Battery.
Resolution:
They provided me with a brand new power adapter right out of the box. In and out of the store within 15 mins.
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Apr 13, 2012
Recently bought a mac air and while trying to charge it, the battery sign says not charging but the computer is running on ac. I tried another adapter and it works. Does that mean my adapter is defective?
Info:
MacBook Air, Mac OS X (10.7.3)
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May 29, 2012
My MBP13 (Late 2011) with Lion 10.7.4 suddenly stopped charging...battery level continued to come down when power adapetr is connected...I am able to check MagSafe is working fine in both of its ends..but the system is not charging and there is not LED on when I connect the adapter to system...tried all the possible ways to fix it including SMC reset,,(but i am not sure if SMC reset worked in this case!!).
Info:
MacBook Pro, Mac OS X (10.7.4)
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Jun 17, 2014
It was working OK. I have put it aside for about 1 month during the holiday. Now, it can not be charged. It works on power adaper, the plug has bright green LED on, but always 0% battery. Looks like the power adapter is still working OK, battery issue?
Info:
MacBook Air, Mac OS X (10.7.5)
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Jun 29, 2014
My macbook pro will not power on the AC adaptor when the battery is connected, I have to disconnect the battery to get it to power up on the AC Adaptor, tried another battery still don't work just has a X on the battery icon at the top. Running Mavericks at the Moment.Â
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May 22, 2012
I recently discovered my computer had died while it was sleeping. I tried charging it but am recieving the "Battery not charging, power source: power adapter" status.My power cord light is green, always. and the computer dies instantly when I remove the magsafe.
I've tried the "remove the battery, press the power button, plug in the magsafe" troubleshooting process, but it doesn't work.I've noticed that even with the battery out, the charger reads a green light.I've tried several outlets with the same results.Here are my battery statsÂ
Battery Information:Â
Model Information:
Serial Number:Â Â Â DP-ASMB016-384e-7636
Manufacturer:Â Â Â DP
[code]....
Info:
MacBook, Mac OS X (10.5.8)
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Jun 28, 2012
The battery don't charge and the power adapter light stays green, I didn't noticed it before the battery was empty. I have had problems with the adapter before and just reconnected the power a couple of times and it starts to charge again and the light turns orange but if I touch the adapter now the computer shuts down.
Info:
MacBook Pro, Mac OS X (10.6.8)
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Dec 4, 2014
Was activating FileVault on a new MacBook Pro until I received a message that it paused because it thinks the power adapter is not connected...even though it was. I unplugged the power adapter for about 12 seconds and then plugged it back in. But the error message persists. FileVault hasn't completed its process and not generated an encryption / recovery key. If I reboot do I risk being unable to access my Mac?
Info:
MacBook Pro, Mac OS X (10.5.7)
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Feb 25, 2012
its vivid image I like the screen bright on my 15" 2010 macbookpro. but I wonder, in the long run does it shorten the computer's lifespan?
should I stay 3 clicks away from the maximum setting for example? just curious what the consensus is on this, if there is oneÂ
Info:
MacBook Pro, Mac OS X (10.6.7)
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Nov 11, 2009
i just ordered a late 2008 macbook pro 15 with the dual GPUs (9400m and 9600m GT) and I'm a little worried about the battery life.
-What can I expect if just doing normal every day stuff (web surfing mostly?)
-does watching a movie off of the hard disk use less battery than watching it off a DVD? Is there a big difference?
I'm not a big gamer but would like to have the horsepower to play a game should one come out that I want. I'm also not a big traveler so battery times are only of average importance.
Basically, I'm asking if I made a good purchase considering I have only average concerns for both battery and game performance. They had the new 7 hour battery 15" macbook pro for the same price but it doesn't have the dual GPUs.
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May 4, 2012
I calibrated my MacBook Pro battery and then noticed that the battery life seemed slightly shorter after that. I calibrated it according to this: [URL]
Just wondering if I have done anything wrong... Â
One more question... What do they mean by "At this point, save your work. Continue to use your computer; when the battery gets very low, the computer will automatically go to sleep." Does it mean that I have to use the computer until it just shuts down or should I shut it down once the "Low Battery" warning pops up?
Info:
Logic Pro, Mac OS X (10.6.8)
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Jul 16, 2009
I have a 13" 2.4 GHZ white macbook that I bought in march of 2008. About 4 months ago I all of the sudden started having problems with battery life. It was very abrupt. I used to be able to take my macbook and sit through 3 classes or more with no trouble in regards to batter life. Then suddenly the battery would drain within a few hours. It has remained that way since.
I've spent the last month or so looking around forums and other places to try and find someone with a similar problem and possible solutions. As a result I've discovered that my situation seams to be somewhat unique.
Using cocoanut battery I tested my battery's capacity and it remains at a solid 98%. How can my battery still be at 98% capacity and have such a short battery life? I also seam to be losing charge while my macbook is closed. How and why does that happen? If I leave my macbook closed for a day or two it can lose up to 25% charge just sitting there!
I've tried loads of things including turning off unnecessary things such as sharing and bluetooth and calibrating my battery, all with no avail.
What is going on?? My battery is too old to be eligable for a recal and I'm not paying $30 just to have a phone conversation with a "Genius". If anyone has any idea what's going on and any possible advice, I would greatly appreciate it.
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Apr 17, 2012
I am getting a very short battery life out of my "New" A1261 battery - we're talking 2.5 hours tops. I've recycled it a few times, but this is no where near the "7" hours that is quoted.
Info:
MacBook Pro (15-inch Late 2008), Mac OS X (10.6.8)
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Aug 10, 2009
I've had this MBP for just over 8 months now, I'd intially purchased one in november, but the audio out used to give a crackle sound so they replaced the laptop. Moving on to the point - in the last week or so, I've noticed the MBP suddenly seems to get very hot and the fans turn on and thus suddenly becomes very noisy. I was using it on the bed so could appreciate that I may have been blocking the vents, but I've had it on a stand the past couple of days and it still seems to do it for no particular reason. The charger usually always gets ridiculously hot, but the MBP used to stay relatively cool, now the MBP gets hot independently of whether its being charged or not. Moreover, my battery life has gone from what used to last 4 hours, to around 2.25.
Cocunut battery gave the following stats:
Current Battery capacity: 4483mAh
Load Cycles: 222
Age: 8 months
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Apr 5, 2012
I just bought a macbook air, and i am wondering, if i can use my macbook air plugged in to the charger at all times using at home? or i have to charge it , then empty the battery, and charge it again then remove the plug and empty the battery again and again? Cant i just use the macbook air plugged in when i am home? Will that affect the battery life of my MBA?Â
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Nov 8, 2010
if using mail.app is more power efficient than keeping 3 gmail account tabs open in google chrome.
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Mar 26, 2012
Is there a separate battery for the clock? My 4 year olc MacBook doesn't seem to be keeping time anymore.
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Dec 29, 2010
I have just bought a MacBook. I have downloaded the Battery Health Monitor and it says obviously that my current capacity is at 100%, with 5,791 mAh. I would like to know how many hours does this value correspond to, because it has certainly not been the highly announced 10 hours battery life
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Dec 1, 2009
Ever since owning the uMBP, I have kept the battery charged and monthly calibrate it to maintain a 100% battery health. But through this, the laptop limits its portability and it is sometimes extremely tedious to find a plug in order to use it. My question is: Is it really worth it to keep a good battery that will last overtime, or would you prefer simply purchasing a new battery when your old one dies? Also, how big of a difference does a healthy battery compare to a battery put through regular use?
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Feb 14, 2009
Hope I can get this clear before buying a new MBair 1.86 SSD. Can I connect to the MB air the ethernet / USB adapter via a USB hub? Via the USB hub of the extrenal keyboard? Via the USB hub of the new 24" led display?
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May 23, 2012
My USB ethernet is "unplugged" (according to System Preferences/Network) after it's been plugged out and plugged in an USB port. The actual network connection doesn't work either. The machine needs a reboot to have the adapter connected. USB probing lists the adapter as expected after re-plugging.
Info:
MacBook Air, Mac OS X (10.7.4)
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Jul 6, 2012
Can I use existing 85w magsafe adapter from existing macbook pro with new MBA 13 magsafe2 port ?
Info:
MacBook Air
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