Laptops :: Can MBP Polymer Battery Be Damaged Through Overcharged
Dec 14, 2010
i know that its generally recommended to not overcharge batteries. i have e.g. seen several cellphone batteries going kaput within a few months since people leave their phones on 'overnight' charge.so i am wondering if the same applies for the polymer batteries in my MBP ?however, if i am not mistaken apple uses some kind of sophisticated electronic monitoring to keep a tab on the state of charge or discharge of the battery.
does this mean that there is no chance of the battery getting damaged through overcharging ?basically, what good practises can i use to ensure that the polymer battery lasts me a long time ?
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Oct 19, 2009
my macbook battery's capacity is 5341 mAh. the original was 5020. is this the charger's problem or is it the batteries?( i get my battery info from coconut battery.)
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Apr 2, 2010
Kind of a silly question but I was looking to buy a battery replacement for my macbook pro. See signiture. My macbook pro uses a lithium ion battery. I noticed that eBay sells the same battery but in a lithium polymer type. Would it work in my computer? What is the difference really anyway? Should I assume that the lithium ion gets 300 cycles and the lithium polymer gets 1000 cycles. I know thats with the new uMBP but what about the aluminum MBP?
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Sep 30, 2009
My MBP 15" Duo 2.33 A1211 received light spillage. The apparent damage was limited to loss of the keyboard backlight on 3/4 of the panel and, of greater concern, effective loss of the right speaker. Audio does pass, though far too faint and distorted to be useful. The left speaker/channel functions as per normal. Last night I successfully replaced the combined speaker assembly yet the same symptoms remain with no change. My knowledge of the guts of my machine is slight though growing. Where should I go next up the signal chain to trouble shoot? Is there a dedicated audio amp onboard between the logic board & the speakers? Outside of my stated problem, all other hardware/processes have functioned without issue since the accident.
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Jan 19, 2011
I recently spilled coffee on my mid 2010 2.4ghz macbook pro. After drying out, the computer worked fine, although the battery was not recognized. Since apple does not cover water damage i bought a replacement battery and installed it today. After starting up the problem is not solved. there is still an X through the battery indicator and if i unplug the laptop it shuts down instantly. When i turn it on, the status LED on the front blinks 6 times before the laptop actually boots up. I have reset the SMC, NVRAM and PRAM.
Any help or input would be greatly appreciated.
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Oct 8, 2009
Mac Book Pro shuts off when using the battery after about 20 minutes. System Profile information says it is fully charged. Health Information, cycle count:108, Condition: check battery. I believe I have two weeks left on the Applecare Protection Plan.
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Jan 28, 2010
I've got a late '06 Macbook Pro, running OS 10.4.11, 2GB RAM, 2.16GHz processor. The battery recently died, but that's not a problem as I run it via the power adapter when at home.
Problem is, since the battery packed up, the computer itself is running slower than when the battery was installed. Is this usual?
It's a dualcore processor, and was previously fast enough to watch HD movies, but now HD movies are jerky, and the whole overall operating system seems noticeably more sluggish.
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Apr 6, 2010
I have a white macbook core2 duo. The main battery is dead and I have been using it with the power brick.
Lately when I plug in and start up I have to go through the reset time and date etc.
I have heard that some of the newer laptops don't have the back up battery. Does this one, and how do I get to it to change it?
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Feb 26, 2009
I've been looking for some info on the older 2007 MacBook Pro battery specs and stats, etc., but have been somewhat unsuccessful. Lately my MBP has been draining the battery at a much quicker pace than normal. This machine is only a year old now (however CoconutBattery says the battery is 16 months old). Still, the battery capacity shouldn't have diminished too significantly. Before I restored the Mac and installed the Windows 7 Beta, I could average 3-4 hours on a full charge. Normally, I would keep WiFi + Bluetooth enabled, an external monitor attached, several USB peripherals plugged in, and the main display would be set to maximum brightness. 3-4 hours was pretty nice considering the amount of power the machine could have been using.
After I partitioned my hard drive, the battery life was cut in half on the OS X side. Windows 7 power management was even worse. I figured that there may have been extra disk activity causing this problem. After I finished toying with Redmond's new OS, I removed the Windows partition and moved on from there. I know after I removed the partition, I was getting excellent battery life initially. Once that short period ended, it went downhill from there. The battery meter has become surprisingly accurate as of late; in a minute or so, you can easily watch the percentages drop 1-2%, which appears abnormal. I can manage 3 hours on a single charge at best, but I usually get less. I decided to take greater care in cycling the battery, in hopes of nursing it back to health, so to speak. It doesn't appear to be working so well. Enabling WiFi and other peripherals only drains more power, but turning them off again adds only 5 minutes. So when I'm using several devices at once, I'm lucky to get a little over 2 hours. Turning off menu items and background apps does nothing either.
It's been this way for several weeks now, and yet, iStat, System Profiler, and CoconutBattery all report seemingly acceptable and consistent battery info: 86% Battery health, around 180 charge cycles, and the capacity is around 4700mAh (out of the original 5500) for now. The computer believes all is well. Performance says otherwise. I'd like to think that physically the battery seems to be okay. I've cycled and calibrated it several times. I have read reviews that indicate that Santa Rosa MacBooks with new batteries have averaged similar runtimes to the ones I experience now, but I know mine has usually bested all of the reported tests. It just seems wrong for the average runtime to go from almost 4 hours to 2 when the battery is (supposed to be) maintaining the same health level. I have AppleCare if it needs to be replaced, since this drastic change in usage time is very noticeable and counterproductive for me, but it could just be the computer (or me for that matter). Is this behavior normal for a battery of this age? What should I look into? If this is normal behavior I can live with it, but I would prefer to get as much out of the one I have.
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Dec 4, 2009
I believe the mechanism utilized by my laptop to route power either from the battery or the AC adapter, is faulty. Sometimes when the battery is connected to the laptop, the battery is not recognized and the battery icon has an 'X' in it, other times it shows a charge %. Just recently with a full battery, I removed the AC adapter from the laptop and the laptop immediately powered off as if the battery was not in place.
Assessed:
(equipment age) new linear power cable and new battery purchased in september
(connection) linear connection seems stable
(battery) charges and holds a charge
Possibly linear > battery transistor issue? Repair Options?
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Nov 13, 2010
I just bought a new MacBook Pro with a solid state (flash memory) disk. The battery life is good while I'm using it, but if I leave it with the cover off for a few days (asleep, I assume), it'll be mostly discharged when I open it up. I assume this isn't normal - it shouldn't be losing that much charge when closed and hibernating. I don't have "wake for ethernet access" checked, if that makes a difference. What's going on - why won't it hibernate?
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Oct 5, 2010
I have an external hard drive attached to my MacBook Pro. Today my MacBoor Pro freezed and I had to turn it off pressing and holding the power button. After turning it on the external hard drive didn't appear in desktop. I checked the disk utility that comes with mac and it shows the HD but I can't mount it.
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Feb 4, 2009
I noticed that some system files are damaged. They are owned by strange groups/owners and the file size is zero. Here are some examples:
Code:
-rwxr-xr-x 1 root wheel 133312 20 sep 09:37 launchctl
-r-xr-xr-x@ 44093 root 8629311 0 4 mei 2008 link
-r-xr-xr-x@ 44093 8629310 wheel 0 4 mei 2008 ln
-r-xr-xr-x 1 root wheel 73696 12 nov 02:51 ls
I repaired my HD and fixed some chain links, any idea to fix these files?
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Mar 17, 2010
I was browsing the internet for a couple of hours when I noticed the computer started getting super hot. The fans are going full blast, and the keyboard is also hot. The scary thing is, I'm not running anything but safari. I'm afraid that given where the fall happened (the back of the computer) that I have damaged one of the fans, because one side of the computer (the left) is burning hot and the right is just normal. What should I do? I dunno how much a new fan costs but I'm guessing not cheap.
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May 16, 2010
I have an A-Data brand 16 gig SDHC card which became corrupted/damaged in my Canon S90 (it looks like a lot of people are having problems with this card). When I put the card into the card reader attached to my Mac Pro, the volume does not show up on the desktop, or appear at all under Disk Utility. No error message of any kind pops up. If I look in Console, I see the following messages:
Code:
USBF:28693.905AppleUSBUHCI[0x11f5b000]::Found a transaction which hasn't moved in 5 seconds on bus 0x1d, timing out! (Addr: 0, EP: 0)
USBF:28696.637[0x12238100] The IOUSBFamily is having trouble enumerating a USB device that has been plugged in. It will keep retrying. (Port 1 of Hub at 0x1d000000)
USBF:28696.637[0x12238100] The IOUSBFamily was not able to enumerate a device. USBMSC Identifier (non-unique): 000000009451 0x5e3 0x723 0x9451
USBF:28719.906AppleUSBEHCI[0x1208e800]::Found a transaction past the completion deadline on bus 0xfd, timing out! (Addr: 5, EP: 1)
USBF:28725.906AppleUSBEHCI[0x1208e800]::Found a transaction which hasn't moved in 5 seconds on bus 0xfd, timing out! (Addr: 5, EP: 0)
The last two continue to repeat.
I have tried a variety of card recovery programs on my Mac, and on the Windows side booted under VMWare. But since the card is not mounting at all, none of these programs can see the card to try to recover anything. I really would like to recover these photos.
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Jan 11, 2010
I have a G5 running Leopard that I have a 2nd hard drive on. It had b-tree node issues, but now Disk Warrior says "the directory cannot be rebuilt, original too severely damaged, error code 2156,-57. The volume wrapper is damaged and needs to be repaired." Disk Warrior doesn't seem to fix it, how I can get my data back?
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May 6, 2007
Our family iBook G4 1.42 MHz was dropped from the arm of a chair onto the carpet (two feet) by one of our children. The display is shown in the picture. I've taken the LCD off and then replaced it thinking a cable might have come loose, but it didn't fix the problem. Does anyone have an opinion as to what is damaged? Is it the LCD? The circuit board in the display housing, or something in the main case? I've not taken the main case apart, but I will try that next.
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Nov 9, 2007
My powerbook G4 aluminum was dropped about 18 inches. The display is now hosed. Thus far I have found *nothing* wrong with the laptop except for the internal display only shows gray horizontal lines with black snow/static intermixed (still in horizontal lines).
What I'm thinking is that the display is probably actually fine and there is some little logic board in the display casing that is bad.
Here is what I've proven:
1. external monitor still works fine (means vid card is fine?)
2. swapped internal displays with another powerbook and was fully functional (means it's something in my display casing or my display itself)
3. backlight works fine (on my munged display)
4. i can see movement in the grayness when i move the mouse pointer around almost like the pointer was as wide as the screen and 90% translucent (i.e. there is a horizontal shaded bar i can move up and down with the trackpad)
I've already thought about upgrading to the 1440x960 display and being done with it. But then I started thinking it is probably a $40-50 part if I could just narrow it down.... And that would be the smart thing, rather than spending $300+
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Nov 22, 2008
I have new MacBook Aluminum, it's totally cool. But there is one problem that i worry about. I can't tour on AirPort. when i hold "tour on" button, MacBook just freezes and then i can't do anything, just shut it down by pressing shutdown button for 5 seconds. i can't find out what is a problem? it's Mac X OS, or AirPort card problem? what should i do? will reinstalling of the OS ?
i even thought that it could be problem of my Mac X installation DVD, could it be damaged?
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Feb 12, 2009
I have a 20" Alu imac, bought September 2008.
A week ago I've been watching a movie with my girlfriend, and the CD suddenly got stuck. Now at first I tried to get it out by poking around in there with a credit card (yes, idiot I know) and I'm afraid my drive might be slightly damaged. Is there any way the iMac can scan if the drive if functioning 100% as intended?
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Dec 6, 2009
My dad bought a macbook pro a few days ago and he deleted some things; iphoto and photobooth to name a few. I told him to go to system preferences and he gets an error message saying something about 'system preferences may be damaged' And it does not open. Is there a way to fix this? He has the snow leopard installation disks etc.
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Dec 27, 2009
Over the christmas holidays I decided to re-install my good old PowerPC Mac mini. Over this procedure by accident I attached the power cable from the Mac mini C2D (2007 model) to the PPC mini. Suddenly I noticed a hard humming noise coming from inside the Mac mini that didn't vanished after some shutdowns. I opened the Mac mini and noticed that the noise was coming from the fan. I cleaned it as good as possible but the noise ist still there. All other components are acting quite usual. But the fan is still making this newly humming noise.
So I think I have damaged the fan somehow and now I'm looking for a suitable replacement. Maybe you have any idea which fan's are good and silent?
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Mar 24, 2010
Whenever I open ITunes, it gives me a message saying that my library is corrupt, and that it is creating a new library, the new library has nothing on it, so i must then copy all my music and movies back into ITunes. How can I stop ITunes from making more and more (damaged) libraries? I just want my old, "corrupted" one back!
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May 22, 2010
i was attempting to change the icon of my system pref. the way I have in past OS. This was the first time I had attempted to do it in Snow Lep. Well my method is make a copy duplicate of the system pref application change the icon delete the original remove the word copy from the new one and viola it works perfect. However this time it did not work and now my system pref application will not open at all it says "it is damaged or incomplete"
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Mar 28, 2012
Upgraded to 10.7.3 and mail says that 'Mail index has been damaged?' It goes through the importing of new mailboxes and then says import failed. I've fiddled, deleting the envelope files and soome other bits and now it's not working at all.
How can I delete this and reinstall MAIL?
I use googlemail for my email account. iMac 27" Mid 2011Processor 3.4 GHz Intel Core i7Memory 16 GB 1333 MHz DDR3Graphics AMD Radeon HD 6970M 2048 MBSoftware Mac OS X Lion 10.7.3 (11D50)
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Apr 18, 2012
Whenever I try and delete an application on my mac, the finder just freezes. It isn't able to delete any of the appliction.
When I clicked on the appliction a 'You can't open the application Spotify because it may be damaged or incomplete.' box appears.
Does anyone know a way of either restoring the application or deleting it so I can redownload?
Info:
MacBook Pro, Mac OS X (10.7.3)
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Feb 19, 2009
just wanted to see how these machines handle abuse. I don't plan on abusing mine, but I am thinking about giving my brother one, and he is careful, but sometimes slips. I know the aluminum bodies aren't that strong, I've bumped my 12" into my car door, and it got a dent. Now I'm very very careful with it. Anybody else got stories or pics?
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Feb 25, 2009
I recently opened up iTunes to update some of my podcasts. Since my MacBook can keep a charge for about 1 minute (I'm not kidding), it shut down while new podcasts were downloading since I forgot to plug in the charger. No big deal, I think. This has happened to be before. Except when I try to open up iTunes after turning the computer on again, I'm told that something happened to my library, and some file was renamed itunes library(damaged).itl.
Huge problem: there is absolutely no damaged itunes library anywhere on my computer. I'm missing about 2k songs, all of my audiobooks, and all of my podcast subscriptions. Where in the hell could the damaged library have gone? I've read that simply renaming that one and reimporting it brings everything back to normal, but I have no damaged file to do this with. Where does it typically go when something like this happens?
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May 15, 2009
I'm using OS X 10.4.11 and iTunes 8.1.1. I'm not very computer literate. When I started iTunes today, I went straight to copy some files into it from another folder. I got an error message about the .xml file and then told files were damaged (I think). I think iTunes started rebuilding the folders but I stopped it and ended up with only 30-something gb of tunes instead of almost 100 gb. All my music is still there in the iTunes/Music folder (I also have 30 back-up DVDs of the library), but I really, really want to be able to keep the Date Added information as this is how I view the music, as well as all the artwork I've manually added. The iTunes Library (Damaged) file is there, as are several Previous iTunes Libraries file.
After a web search, I did the following:
i. Quit iTunes and copied the most recent "Previous iTunes Library" file to the desktop.
ii. I trashed the iTunes Library.xml and iTunes Library (with the logo) files at the top of the folder structure.
iii. I then dragged the copied Previous iTunes Library file into the iTunes/iTunes Music folder and launched iTunes. Should it be dragged into the top-level iTunes folder or where?
It opens, but with absolutely nothing in it. I've tried dragging the Previous iTunes Library file everywhere I can think of (trashing the existing .xml and Library file each time), but still no joy. This latest Previous iTunes Library file is only a couple of months old and I'd much, much rather re-do the last two months music than lose the Date Added and all Playlists etc.
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Sep 11, 2009
I have a damaged HFS+ volume on a storage appliance (Drobo). It does not mount in the Finder but it is visible with Disk Utility and Data Rescue II, and I've copied quite a bit of data off of it using Data Rescue II. However, because of a separate issue everything on the Drobo is currently read-only.
I would like to copy the damaged volume (about 1.1 TB) as-is to a fresh 2 TB hard drive so that I can then attempt to repair the volume using Disk Utility or other utilities. There is no other way for me to overcome the read-only status of the Drobo. I'm looking for the best way to do a sector-by-sector, block-by-block, or byte-by-byte copy of the damaged volume... whichever of those might be the correct term for what I'm describing.
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