Random drop in battery power, plus sudden shutdown!!!

I recently posted a topic regarding my battery losing power quickly. You can view it here http://discussions.apple.com/thread.jspa?threadID=1184841&tstart=0
Tonight I was using my computer and saw it was down to 35% battery. Literally as I was reaching for the cord to plug it in, it went to sleep. It finally turned on again once I plugged it in, but said that the battery was at 0%. Right now it is at 4% and climbing steadily. What the heck happened?

You might want to rethink your battery use. From 8-1-2006 to 10-21-2007 is 447 days. From your cycle count you charged it 458 times. A cycle charge equals one full charge. A full charge is counted from the battery level when the computer shuts down to full charge. If you don't need to run off battery you shouldn't. It is Ok to run off the MagSafe adapter most of the time. I only run my battery completely flat once every two months. The rest of the time I just use it and don't worry about the level. I just plug it in as soon as I can get back to my supply. I have had this battery about 5 months and have 12 cycles on it.
I think you will need to get a new battery. You might want to look at these, http://store.fastmac.com/productinfo.php?cPath=10_4&productsid=151 , and save a little money.
Any battery has a finite number of cycles in it before you have to replace. Apple says theirs should be at 80% at 300 Cycles. You may be able to stretch your batteries life out by calibrating and using your battery a little differently. But as I said it may not help a lot.

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    Those figures actually look fine, ze red baron.
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  • Battery power drops constantly​/randomly from nearly full to under 10%.

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    Hi and Welcome to the Community!
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    Occam's Razor nearly always applies when troubleshooting technology issues!
    If anyone has been helpful to you, please show your appreciation by clicking the button inside of their post. Please click here and read, along with the threads to which it links, for helpful information to guide you as you proceed. I always recommend that you treat your BlackBerry like any other computing device, including using a regular backup schedule...click here for an article with instructions.
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  • Random, Sudden Shutdowns - A redux and other things to rule out first

    Do a google search for "macbook random shutdown" and you'll find many people with similar problems reporting on various forums. At present, this issue has not been picked up by the mainstream PC news media. However, one should also note that only a fraction of those with problems are suffering this particular fault. A large number of other reasons must be ruled out before a MacBook owner should become convinced their machine is one which suffers this problem. Bad RAM, poorly seated RAM, improperly installed hard drive, corrupted OS, corrupted plists, bad batteries, bad chargers, corrupted PMU, and corrupted NVRAM all need to be ruled out first!
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    MacBook suddenly shuts off to a completely powered down state seemingly at random. There are no kernel panic, mouse freezing, or other premonitory symptoms. The machine simply powers down suddenly. The screen goes black. The hard drive spins down and no sleep light illuminates. The machine simply turns itself off.
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    Resetting of the PMU and PRAM MAY temporarily reduce the frequency of the sudden shutdowns, but the effect is temporary. Indeed, the effect may not even be real given the randomness of the shutdowns. None-the-less, one must perform PMU and PRAM resets to ensure that some corruption of those devices is not creating a reason for shutdowns. On my own MacBook, resetting PMU and PRAM (four chimes) did not prevent the random sudden shutdowns.
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    In my case, a logic board replacement did indeed solve the fault, but several days later, sudden shutdowns began again. Presumably either the replacement board has the same weakness as the original or some other component of the machine was the actual reason for the sudden shutdowns. The former is quite likely because the machine was made stable for several days with a new logic board. At that point, I requested to be swapped to a new machine and the Apple Store manager wisely decided to help out his customer. For that I am most grateful. However, it is unlikely that the majority of people will have their machines swapped out, but instead repaired.
    At this time, no official statement regarding cause for or acknowledgment of the MacBook's sudden random shutdown problem has been made. Because the underlying cause has not been revealed, it is impossible to know that a logic board replacement will permanently solve the problem or merely result in the same fault recurring later on the replacement board. Of course, we do not know if it actually is a logic board flaw.
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    3b. Reset PRAM by holding option-command-P-R keys down during startup until you hear the chime at least three or four times.
    Resetting the PMU and PRAM are standard procedures you'll otherwise be asked to perform to diagnose your machine.
    4. Do a CLEAN install of the OSX if you wish to totally eliminate a bad OS install as the problem. This will destroy all your data. Alternatively, an archive and install will be helpful without totally destroying your data, but that will not let you exonerate your system files and settings. An alternative is to run Apple's hardware test utility which is found on your OS installation disc. However, an extended hardware test is needed because the shutdown flaw may take hours to surface.
    Note: If your MacBook has become so "narcoleptic" that it cannot even complete a boot up sequence, try holding the power button down until you hear a loud beep. That may allow an otherwise balky machine to start.
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    BTW - resetting PMU may induce a separate 10.4.7 related bug which results in your MacBook exhibiting a white screen with progressively more numerous vertical color lines during startup. This appears to be fixable by resetting PRAM and then temporarily changing display resolution to something other than the current setting and then back.

    thanks for the comprehensive info. i experienced this for the first time today. i bought my macbook the day they were released. the shutdown happenned for me after leaving my computer on overnight with no programs running. about two minutes into web browsing it shutdown. it then shutdown in the middle of restarts. i disattached power cord, external hard drive, dvd burner & ethernet & it powered up and has been working for about 20 minutes since.
    this computer has really been a lemon. first my superdrive scratches the **** (just previewed this, i can't believe they sensor the h_ word?) out of discs, then the trackpad button becomes very hard to push. i've been working around those issues using an external dvd burner and mouse, but not sure how to work around sudden shutdowns. i haven't been able to send it in for repairs yet since i bought it cause i needed it's dvd authoring capabilities for a class i was taking, plus i wanted to make sure nothing else went wrong (self fulfilling prophecy?). i was planning on taking it on vacation with me, but guess i better pack my old ibook too (which other than a cd burner which sucked from the start, has been very reliable). i'll send in my macbook when i get back.
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    white macbook, 2GHz, 1GB ram (factory installed) Mac OS X (10.4.7)
    macbook Mac OS X (10.4.6)
    macbook   Mac OS X (10.4.6)  

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    the clock reset is just a side effect of the main issue - system power failure. as long as there are no sudden shutdowns the clock is saved. plus i guess i am not gonna replace the whole motherboard so that's why i am less concerned about that.
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    Message was edited by: rraaarr

    Here's the Apple article on how to reset the PMU:
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    Je peux lire en français s'il est plus facile que vous répondiez en français.
    Puedo leer a españoles si es más fácil que usted conteste enespañol.
    Macbook Rev. 2,1   Mac OS X (10.4.10)   Core 2 Duo 2.16 GHz, 1GB RAM, 80 GB HD, . . .

    Have you done the battery update?
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    FYI in your specs you listed having a 2.16 GHz C2D. These just came out. Since yours is late 2006 it is probably a 2.0 GHz C2D.
    Mort

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    Could this be from my new logic board?

    Hi E,
    Unlikely, but possible. More likely the batt is dying. Time indicators have never been known for their accuracy, and a batt starting to die increases that problem. Check the condition of the batt (Apple Menu:About This Mac:More Info:Power) and post back.
    Message was edited by: tjk

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