MacBook Pro :: Battery Calibration - Power Cord
Oct 12, 2010
Well I just scored a 15 inch 2.4 from Bestbuy for 10% off. SOmebody just returned it having never even used it, but they had to discount it because it was opened. I love it love this thing!We did migration from our imac and everything came over. AmazingOne question about calibration. I charged it fully and let the power cord be in it for an extra 2 or so hours. I then used it unplugged until it basically shut off due to no power. Cant I just plug it in and let it charge all the way without letting it sit for 5 hours. Its not sleeping I dont think. It actually shut off suddenly as it was at zero percent. There is no power to it at all that I can tell. Will charging it now without leaving it unplugged for 5 hours ruin the calibration??
View 2 Replies
ADVERTISEMENT
Jun 26, 2012
This morning, my macbook pro laptop won't turn on even though the battery is charged and power cord is working. it worked fine last night. what can i do?
Info:
MacBook
Pro, Mac OS X (10.5.8)
View 1 Replies
View Related
Apr 9, 2012
Last Thursday I down loaded software updates from apple and have been losing power very quickly ever since. It just seems like as soon as I remove the power cord I lose power with in three minutes.
Info:
MacBook, iOS 5.0.1, purchased feb 2009
View 4 Replies
View Related
Jul 6, 2012
Can I use existing 85w magsafe adapter from existing macbook pro with new MBA 13 magsafe2 port ?
Info:
MacBook Air
View 1 Replies
View Related
Aug 10, 2009
When calibrating the battery, is it better to do a quick drain with a dvd or cd burning or a slow drain with the brightness all the way down or does it not matter?
View 8 Replies
View Related
Oct 2, 2010
I've got my SSD in an optibay and am using it as my boot drive. As such, I've disabled hibernation on my MBP.I am wondering about battery calibration, as you need to drain the battery down fully and have the MBP enter the hibernation state to properly calibrate the battery.
View 6 Replies
View Related
Nov 18, 2010
got my 13" MBA and am very happy about it. I plan to baby this thing, and I am always very conscious of battery life for all of my devices, so do any of you have any advice for how to best handle the first charge/discharge cycle?The machine almost fully charged out of the box. Should I run it down to zero and then fully charge it? Should I fully charge it first and then run it down?
View 7 Replies
View Related
Mar 21, 2010
So I just got my macbook pro yesterday 2.8ghz. quick question. I just read up on the battery calibration process on apples website. seems straight forward. just one question. after i let the battery drain and let it go into sleep mode, then wait 5+ hours, then charge it to full. can i use the computer when i start charging it to full? or does it have to be off while im charging it to 100%? t
View 7 Replies
View Related
Apr 24, 2010
I just got my first Macbook pro 15" and trying to calibrate the battery. Can my MBP sleep on battery during calibration? Can i finish the process after sleep? It takes a lot of time to calibrate this device.
View 4 Replies
View Related
Aug 5, 2010
When you see the low battery warning, save your work and close all applications. Keep your computer turned on until it goes to sleep.
After your computer goes to sleep, turn it off or allow it to sleep for five hours or longer.
Connect the power adapter and leave it connected until the battery is fully charged.
View 3 Replies
View Related
Jan 19, 2010
I just received an iBook I bought used on eBay (got a great deal, and so far it looks good!). Only problem is- the adapter that came with it is like only 3-4 feet long (the adapter piece JUST reaches the ground from my desk). I plugged in the 'extension' cord from my Macbook Pro's adapter and that seems to be working fine, but now I can only charge my MBP with the little plug thing.
So my question is this: can I use any power 'extension' cable that fits (i.e. a random black one I just found) to plug the adapter into the wall? Like this: (URL) It would be great if I could, since this would save me the trouble of switching cords or buying another cord to connect the adapter.
View 9 Replies
View Related
Sep 4, 2010
I just got my first Mac yesterday, 13" MacBook Pro. I LOVE IT! I've been trying to find out some info on the battery calibration that I can't find anywhere. I have tried Apple's website, Google and MRoogle before I made a new thread about it
View 1 Replies
View Related
Sep 11, 2010
Ok, so I just did a battery calibration and once the battery got really low, it shut off, but didn't go to sleep like it has done before. It completely turned off; the battery light indicator is not indicating it is asleep. I've never seen it do this, has anyone else had this happen? I have a 2006 MacBook Pro, 2.33 C2D, non-unibody.
View 4 Replies
View Related
Oct 30, 2010
I got mine yesterday, and am calibrating the battery. When you run it down to sleep, and recharge, can you use it during the full recharge period?
View 1 Replies
View Related
Nov 11, 2010
I've just calibrated my battery on my 2.4GHz MBP (let it run out until it slept, then woke it up, then used it till it shut down, then charged it) and it's stuck on "finishing charge". Additionally, the battery health has gone down to 23% from 37% since I have done this.
View 10 Replies
View Related
Jul 19, 2009
I was sick of the battery life I was getting on my 15" Macbook Pro 3,1 (early 2008 model), so I went to the apple store yesterday to get a new one. I was over 400 cycles, so I had to just buy it, they wouldn't replace it for me. I expected that, so no big deal. But I wanted to treat this battery right. I got home, charged it up to 100%, let it sit at that for a few hours, and then let it drain overnight and rest at empty for a few hours. This afternoon, I plugged it back in with the intention of letting it fully charge and thus complete my battery calibration, but at around 40% charged, the cat yanked the charger cable out from my laptop. And then a little bit later, my girlfriend did it again. So, has my time been wasted here? Battery calibration is such a pain in my rear. i hate it. I use my laptop often and expect it to be available to me whenever I need it, regardless of how many other computers i own. I really don't want to deal with it again in the near future. And I may not.
View 3 Replies
View Related
Apr 22, 2010
So I just got my first MBP, and I have calibrated my battery. Both iStat and Coconut Battery report my battery health is 98%. Do you think this is reason for concern, considering the MBP is supposed to be new? What is your new MBPs battery health?
View 3 Replies
View Related
Jun 21, 2010
Last night I calibrated my battery. Let it fully charge for 2hrs, took it off the charger, turned up the screen brightness and keyboard backlight all the way, then proceeded to run the battery down watching videos and whatnot. It went to sleep and I went to bed to let it sit for 5 or more hours. Woke up, charged it up, turned it on and noticed that I went from 97% to 87% (coconut battery says 86%) and I only have 54 cycles. Should I go to the genius bar or something? Or try re-calibrating the battery? Did I do something wrong when I did it? Does it matter how long it takes to run down the battery after it's fully charged?
View 10 Replies
View Related
Jun 23, 2010
I just bought MBP 17 i5 model a couple days ago from a local apple store(Keystone Mall). and I calibrated my battery yesterday. The thing is I know MBP should sleep when the battery is really low(running off reserve) then when the battery drains out, MBP should do the "safesleep" thing where it stores the current state of the machine so that upon turning the machine back on by supplying the power to it or after charging, MBP returns to the stored state.
But, when i was calibrating my battery, I did get the low battery warning(reserve battery blah blah) but then it drained down to 0 then the screen flickered(literally made a flicking sound) and went dead. When I got up in the morning I plug the adapter on and turned the MBP on and MBP just freshly boots.. rather than restoring the previous state..................
View 3 Replies
View Related
Jun 19, 2010
I am searching for any bright ideas to power up my Macbook. I find myself in Belize without my cable cord for my Macbook but I happen to have a powered up PC. Any ideas on how I might use maybe my PC to power up my Macbook?
View 5 Replies
View Related
Feb 2, 2012
Having a problem with my power cord. 41% battery and i go to plug it in and the power cord does nothing. Changed outlets, cleaned ports on both ends, waited few minutes, and cursed at it and it still won't work.
Info:
MacBook Air, Mac OS X (10.7)
View 2 Replies
View Related
Aug 17, 2010
calibrating my battery for the first time this morning. i just opened my macbook pro to see that the time left icon jumps every minute. it goes from 8:50 to 12:38 to 6:54 to 11:37 to 7:40! and now it went from 8:45 to 9:19! the percentage remaining is consistent and correct but the time left is way out of whack! sorry for the slang! now it went from 9:19 to 9:11 then 8:47. i have the screen at the lowest brightness, no backlit keyboard, nothing else running except firefox. i wasnt aware that i was supposed to calibrate my battery and its been about 3 months since i bought this. now its at 8:37 now 8:18. this is quite
View 5 Replies
View Related
Dec 2, 2009
I have a 30 month old MacBook Pro (the SantaRosa line from June 2007)... And was still using the original battery up until 3 days ago. Its capacity suddenly dropped from 83% down to 45%, so I took it to an Apple store, they did a diagnostic, and without question told me the battery was defective, and just gave me a brand new battery with only 1 loadcycle on it. So today I decided to calibrate it, had it charged up, unpulgged it and let it run until it was 'supposed' to go to sleep... It had 0% left on it, the screen shut off, and the sleep light was just starting to dim, when I heard the hard drive go . (As if one pushed and held the power button, aka hard shutdown).
It seems it didn't have enough reserve capacity to let it go to sleep, so instead of waiting the 5 hours (as it wasn't sleeping, and pressing the button on the battery showed no lights at all), I decided to plug it in right away. Would it be a good idea to calibrate again, or simply wait a month or so and do it again then?
When I turned the computer back on, it didn't even resume at my desktop, so not only did it not get to sleep properly, it didn't even have a chance to write the memory to the hard drive, and now the actual battery capacity in Coconut battery is showing up 95%, 5253mAh
Just curious, as 30 months ago when I first got my original one, it calibrated properly and didn't completely die when it got to reserve capacity...
View 3 Replies
View Related
Dec 25, 2009
My MacBook Pro is only 3 months old with 37 battery loadcycles. I calibrate my notebook monthly and the battery capacity stays the same. I have also tried resetting the SMC and nothing happened I do not have my laptop continuously charging, the most would probably 4 or 5 days straight. My current battery capacity is 91%. What should I do?
View 1 Replies
View Related
Sep 28, 2009
I got the frayed power cord issue where it opened up. Went to the Apple store they told me I needed my serial number. Went home came back and now they are having me wait over an hour for them to look at it.
I thought this issue was a common defect like the cracked whitebook and they instantly replace it
View 8 Replies
View Related
Jul 18, 2010
I had just received my first macbook a short time ago and I was wondering what the exact purpose of the AC power cord was.
Is it simply an extension cord to the charger? Or does it have a different purpose?
View 3 Replies
View Related
Apr 1, 2012
Wondering if the yellow, charging light, sometimes coming on and going off is an indication of my battery going dead. Mine is a UMBP and the battery hasn't been change. Don't use it too much, though.
View 5 Replies
View Related
Apr 8, 2012
My 2011 macbook pro does not go into sleep mode with the power cord on. The sleep light goes on, but does not go into "pulse" mode and the fans continue to run as well as the hard disk keeps running.Â
The issue started a few weeks back. I have tried switching off the internet sharing and other possible settings that might hinder the MBP going into sleep mode when the power cord is in. I have even down loaded PleaseSleep but that does not seem to function either.Â
Seems like a minor issue, but if the MBP does not enter into sleep mode correctly I am afraid the built-up heat might damage disks, rams or screen.
Info:
MacBook Pro (15-inch Early 2011), Mac OS X (10.7.3)
View 9 Replies
View Related
May 4, 2012
I have recently discovered that my MacBook Pro (2009) with OSX Lion does not go to sleep when the power cord is connected. It does not matter if I close the lid or select sleep from the Apple menu. All that happens is that the screen is powered off, the SIL is solid and I can hear the HDD/fan. I have not changed any of my power settings recently and it has not been a problem previously. If I disconnect the power cord the MB goes to sleep as supposed to (the SIL led starts flashing).Â
Doing some research I have found other users with somewhat the same issues when VMWare Fusion is installed. I have done some further testing and it seems that if I disable the virtual machine's Network Adapter and quit VMWare Fusion the MB goes into sleeping mode when the lid is closed even with the power cord connected. Enabling the Network Adapter again prevents the MB to go into sleeping mode when the power cord is connected. This even applies when the VMWare application is shutted down.Â
My guess is that the Network Adapter somehow prevents the MB to go into sleeping mode. The workaround is of course toggling the Network Adapter on and off but the virtual machine has to be running in order to do so. Not being that familiar with network settings on a Mac is there any other way to get around the problem?Â
Info:
MacBook Pro (15-inch 2.53 GHz), Mac OS X (10.7.3)
View 5 Replies
View Related
Jun 11, 2012
When I plug in the power cord it is not connecting and therefore not charging the battery. Battery is deal and the MacAir will not turn on.Â
Info:
MacBook Air, Mac OS X (10.7.4)
View 3 Replies
View Related
