Macbook - Shuts down with low battery and doesn't go to sleep

I have a Black MacBook 2.16 core duo and have been dealing with this same issue for about 6 months.
At first, the MB (macbook) worked perfectly. battery would get to 5% or so, warn me then go to sleep, then write a safe sleep image, then shutdown. I would turn it back on and it would restore the image to where I left off.
After about 2 months this stopped working properly. When running solely off the battery, the MB would get to about 20% and just shutdown. ppbbbbllltt!
I've spent endless hours on the phone with people in the Phillipines and sitting at Genius Bars. I've gone through all the things mentioned in Apple's support thread: calibrated the battery, reset PRAM, reset SMC / PMU, updated the battery uupdater to 1.1 then 1.2 (I think that 1.3 is only for MB Pros)
I'm on my THIRD BATTERY..it's happening again...at least with the first 2 it worked for a couple of months. With this battery, it bombed out on the first cycle that I went through.
Is this the logic board or the motherboard or something else??
Any other ideas on what to try?
Is this a hardware issue (IE motherboard, logic board...) ?
Is this a software issue (IE - OSX) ?
Is it a firware issue (IE - battery firware) ?
I'm at a loss....

If it's your third battery you need to have Apple look at the computer itself. As you know now switching batteries is not fixing it. I would guess it is in the power control circuit which is on the motherboard. You need to call and get it checked out.

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Macbook shuts down on low battery

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My macbook powers off on low battery several minutes after low-battery alert. So nothing gets saved if macbook was left without power for a long period of time.
About first 3 month when it was new it went to sleep on low battery. But what happened now and how can I fix such a behaviour?

I believe I have found the problem...
If your battery is 0102 or 0102a firmware (check in System Profiler), then I believe it is the culprit; I have been through 4 batteries, and the only two that worked were 0110 firmware.
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Well basically my laptop shuts itself down instead of going to sleep when my battery gets low. I also do not get the low battery message. My macbook will usually shut down when it gets to approximately 6% of battery life. What should I do?
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Have you done the battery update? You might also try to reset the SMC and/or PRAM.
If it doesn't work you may need a new battery. The original core duo batteries have had an extra year added to their warranty so even if your computer is not covered the battery is. My MacBook was doing the same thing except at 28%. Apple replaced my battery and it works fine now.
If you call Apple be polite but firm some people have had trouble from some of the reps. Mine went smoothly I had a new battery in 3 days.

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up until recently my macbook's battery has been working just fine. but then lately i noticed that a few minutes after it displays the low battery warning it shuts down by itself.
before, when the low battery warning would display i could still continue working on my macbook for several minutes until it goes to sleep -- only then would i connect it to the power cord.
unlike the other posts (concerning batteries) that i've read, i have no problems turning my macbook on/off before or after this event has occured. neither does it shut itself down when the battery is halfway. my problem really only happens after the low battery warning has been displayed.
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For what it is worth, I now have the same issue. Only I don't even see the low battery warning, it gets to 15% or 10% and bang, no power. This is not good, by the way and is bound to corrupt something in the system as OSX requires some house keeping when you shut down the computer properly. This instant off is not a proper shut down. I took my MacBook in and they wouldnt simply replace the battery, they want to keep the computer and give it back to me in a few days. I rely on this puter for work 5 days a week, so I was trying to avoid this.
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The problem I am having is that the macbook will shutdown consistently with ~15 minutes left on the charge (under 10%). I get no low battery warning. I have tried numerous SMC and PRAM resets with no luck. Battery temperature and computer temperature appear to be fine so the unit is not overheating. The only indication I can assume is suspicious is that the battery will draw over 2 amps at times as that magic time remaining approaches. Battery cycle count is 3 and remaining capacity is over 5300 mAh.
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Fully Charged:          No
Charging:          No
Full Charge Capacity (mAh):          5336
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HI kostby,
I've been trying to calibrate the battery but can't do the 5-hour sleep procedure since the computer doesn't go to sleep. Although I have noticed that the last time the shutdown occurred, the battery indicator light was one and blinking. So the battery thinks it is drained but the computer does not (hence 15 minutes remaining and no low battery warning). So I took the battery out of the computer last night with blinking indicator light and left it alone overnight. I reinstalled the battery this morning and am charging it now. Hopefully it calibrated.
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rgregoryadams wrote:
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Hi,
Our MacBook Pro has started to shut down with about 40% battery left. After it has shut down, I press the button underneath the computer and 2 our of 5 lights light up on the battery. I wouldn't mind if it just went to sleep but I totally have to restart it and lose everything I have been working on when it died. The computer used to go to sleep when the battery got to 0%, then I could plug it in and keep working.
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I have read so many articles across the internet with people experiencing this problem. This is the conclusion I came to.
I could not calibrate my battery as my system would hard power down before it got anywhere close to draining the battery entirely. The last 10 cycles on my battery were attempts at calibrating. The most common cause would be because the battery in our macbook pro does contain something close to the charge being reported by the computer, but cannot deliver it. Your fuel gauge is probably not incorrect, especially when the leds on the battery itself show a charge that should be capable of running the machine. Even if it is not calibrated correctly. The internal resistance of the battery itself has compromised the batteries ability to deliver the amperage necessary to run our machines. After finally realizing this, I turned my screen brightness all the way down, and sat all my power settings to max battery life without allowing the machine to go asleep. Then, I went to sleep myself =). In the morning it appeared as though I had a successful calibration and the machine did not power down hard. Depending on how bad of shape your battery is in, this may or may not work. Either way, it didn't matter much. Even with my fuel gauge being correct, if my screen brightness was cranked up and I was doing anything somewhat processor intensive, my battery failed to provide the needed amperage and powered down my system hard again.
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Message was edited by: incomethax

Wow! I recently had this same EXACT problem and called Apple Care about it last week and said that they cannot do anything about it since my battery cycle is too high ( only 315) ! MacBook is the same model as yours. I finally brought mine in today at a local genius bar (Otay Ranch) and they replaced the battery even though My Mac's just a little over a month its 1 year warranty. I will now calibrate this battery and see if the same problem persists. When I called about this problem, the Apple Care rep says that he has never seen this problem before but now I just saw this and glad that I wasn't the only one, maybe its a faulty design on the first generation Unibody with removable batteries (Late 2008)

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Never had such issue on my notebook but regarding to another users here in the forum the BIOS might help to solve such strange notebook behavior
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You can get a new battery fairly cheap on eBay if you have the Early 2008 MacBook with the easily removable battery.
Black Batteries http://shop.ebay.com/i.html?_nkw=macbook+black+battery&_sacat=0&LH_BIN=1&_sop=12 &_dmpt=Laptop_Batteries&_odkw=macbook+white+battery&_osacat=0&_trksid=p3286.c0.m 270.l1313
White Batteries http://shop.ebay.com/i.html?_nkw=macbook+white+battery&_sacat=0&LH_BIN=1&_sop=12 &_dmpt=Laptop_Batteries&_odkw=macbook+black+battery&_osacat=0&_trksid=p3286.c0.m 270.l1313
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Macbook - Shuts down with low battery and doesn't go to sleep

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