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Software :: Laptop Shuts Down When The Battery Is At 35% With No Warning?


Laptop shuts down when the battery is at 35% with no warning! Any idea of what to do?


View 3 Replies (Posted: Dec 1, 2008)

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Completely shuts down without low battery warning and not necessarily with a low battery. Don't have excessive applications open (firefox, mail, itunes, word)

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Posted: Feb 23, 2010

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Posted: Aug 13, 2010

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Posted: Oct 7, 2007

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For example, I may start at battery = 100%, and at 20% the laptop shuts off, as I am using (not going into sleep mode due to un-use). The battery seems to go down really fast compared to what it used to be.

Battery Information:
Model Information:
Serial Number:9G84603EF3NYB
Manufacturer:DP
Device name:bq20z951
Pack Lot Code:0000
PCB Lot Code:0000
Firmware Version:002a
Hardware Revision:0005
Cell Revision:0100
Charge Information:
Charge remaining (mAh):2079
Fully charged:Yes
Charging:No
Full charge capacity (mAh):2079
Health Information:
Cycle count:158
Condition:Check Battery
Battery Installed:Yes
Amperage (mA):192
Voltage (mV):12563

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Mac OS X (10.6.1)

Posted: Oct 6, 2010

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Just upgraded to Leopard from Tiger. When the battery runs out. the laptop shuts down completely. whereas with Tiger it would be in sleep mode. Means I have to reboot every time this happens.

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Posted: Jun 2, 2009

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Posted: Sep 14, 2009

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my daughter bought a used ibook g4 15" and it worked for several months before developing a maddening habit of shutting down without warning. I've read other threads about this with ibooks but they say it happens only when the battery is operating and doesn't happen when plugged in. My daughter's does it either way and will only stay on for ten or so minutes most times before shutting down. It makes the machine unusable. We've checked the power supply and the power input board. Is this a logic board issue? She paid $450 for the computer but the prices have come down and it might not be worth fixing. I can solder and can get into the logic board if someone can tell me what to do.

Posted: Dec 26, 2009

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Lately my MBP has been randomly shutting down when not plugged in to charger.

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Information:
2.8 GHz Intel Core 2 Duo MacBook Pro
Mac OS X (10.5.6)
4GB RAM

Posted: Apr 1, 2009

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I tried several more times having the same problem and each time it would shut down sooner than before. I packed it up and took it back. They switched it out with a new one and it worked well for quite a while but now it's doing it again. in the middle of anything I'm doing it'll just shut off, losing all my work, with no warning or error messages. Its Not Energy Saving function either. Can I take it in to the store if I didn't by anything extra (apple care plan) and it's within a year?

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Posted: May 15, 2009

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Posted: Dec 27, 2009

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I was hoping you could get me started in the right direction. My wife has an iBook G4 which lately, while using a full battery, just turns off suddenly. There is no warning and it never does it when it's plugged in. The battery looks like it's almost fully charged - at least that's what the meter in the menu says, so I don't know what's going on.

Could you possibly give me some steps to go through to try and figure this out?

The first step she wants to try is to get a new Intel MacBook, but I'd like to try a couple of other things first!

Posted: Nov 5, 2007

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Recently my mbp has just been shutting down without warning, even with a battery at over 30%. I try and reboot and it turns on, then shuts down right away. Once I plug it back into to a power supply its fine. I've had it for about two years, been through 223 cycles, and it says its in good condition.

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Posted: Apr 30, 2009

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I have a macbook pro that is a little over a year old. The battery up to this point has been really spectacular, better than any of my past MacBooks. Of course there has been a little decay in battery life, but nothing substantial. Until the other day. I was operating at about 50% power and the computer just shut down. No warning or anything, it just shut off hard. It has done this several times since, all at about 50% power. Then last night it shut off at 88% power. Is this a battery issue or something more severe with the computer? It has also been coming awake even when closed, so when I come back in the morning the computer is very hot.

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Posted: Aug 1, 2009

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My battery needed replacing for a couple of months before i dropped it from about knee level onto a sidewalk. After the drop I got the not charging icon. I thought maybe the battery had just finally died. so I did not panic about the no charge. The laptop works fine when plugged in to power with the old battery on or no battery at all. Not at all when unplugged.

When I put the brand new battery on the lap top, the computer shuts down halfway through boot up. I tried holding the power button down through boot up reset, as well as removing all power (plug and battery) and holding down the power button for 10 seconds reset.

Posted: Apr 18, 2008

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Posted: May 12, 2009

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I am on my 3rd battery for this laptop. The previous replacements were done under AppleCare but this time I am on my own. It has started just going to sleep without warning when it is still showing a 50% charge or some other relatively good charge level. When I wake it back up it shows 0%. I just got this battery a few months ago. It now says "service battery". The stats for the battery in the system profiler are (with battery charged to 100%) Battery Information:

Model Information:
Manufacturer:Sony
Device name:ASMB012
Pack Lot Code:0000
PCB Lot Code:0000
Firmware Version:0110
Hardware Revision:0500
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Full charge capacity (mAh):2920.....

Posted: Jul 15, 2010

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Posted: Jan 22, 2010

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My MacBook shuts down on random percentages when used on battery power. I can only use it for FIVE minutes before it shuts down. And as I said, it shuts down before the battery runs down to 0%.

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Posted: May 5, 2012

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my brand new MacBook always shuts down when the battery is empty instead of just going to sleep as my iBook always did.

My battery of course is calibrated so how come?

Also i noticed that sometimes my MacBook (when charged) goes to a deep sleep mode and writes the system state to disk - sometimes it keeps it in the ram as i would expect it. Is there any option to influence this behavior?

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Posted: Jan 21, 2009

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On previous laptops and this laptop prior to 10.5.6, when calibrating the battery by letting it drain to 0%, I could immediately reconnect the laptop to the power adapter and then wake it, leaving all of my programs as they were. I was doing this before 10.5.6 and it worked the same way. I just recently, since upgrading to 10.5.6, tried this and the laptop shuts down completely, no sleep. I then have to do a complete power up.

I hope this bug can be fixed as I don't know how I'll ever be able to properly drain the battery to 0% without having to shut down everything on the laptop just as it gets toward zero.

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My MBP is less than a year and a half old (late 2008.) After the battery has fully charged, I take it off the power source. It shuts down without warning after 10 or 15 minutes. Battery is in "Good" condition: cycle count is 119. Can it be that my battery needs to be replaced?

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Posted: May 9, 2009

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My MacBook (13" unibody) shuts down at 30-35% of battery level without any warning. I have the impression that it began to happen after I installed the Snow Leopard upgrade. I got the computer on Dec. 24th 2008.

Information:
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Mac OS X (10.6.2)

Posted: Jan 2, 2010

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I have done all those PMU resetting stuff. The problem is that my iBook (1GHz, 768MB RAM, Tiger 10.4.3) keeps shutting off when I run it on battery. While plugged in there doesn't seem to be a problem. Here's what I've found out: This seems to happen only when I run the iBook from the battery. There is no pattern as to when it will happen: It might be fully charged, at 70%, 50%, etc. There are no warnings: The iBook just dies

To restart it I have to plug in the charger, I can't start it from the battery after one of these sudden deaths

If I press the battery indicator after a crash, it doesn't show any charge - no green lights
When I restart the machine the battery indicator will work, and it show's a charge in Tiger as well

I've done all that PMU resetting, PRAM resetting, etc. Doesn't work. Any ideas as to what this could be? Bad battery?

One more thing: I've run the hardware test, and it doesn't come up with anything at all.

Coconut Battery shows that my battery should hold a charge as well. Max charge is still at 3500mAh, 18 months and 750 cycles after I got the iBook.

Posted: Nov 25, 2005

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Is it strange that my MacBook now just shuts down when it runs out of battery instead of just going into sleep mode? It's about two weeks old now. It used to go into sleep mode, but now it just shuts down once the battery is down. Also, I had the most wonderful experience with Apple. My first macbook (three weeks ago) had a small chip on the screen. When I finally noticed it, I thought it was a large piece of dust so it wasn't too terrible. I tried to exchange it at the local store where I purchased it, but it had already been four days and I had cut out the UPC for the printer and ipod rebate the day before and sent it out. So they recommended that I go see a mac genius and see if I can get the screen replaced because I could no longer exchange it or return it (risk losing my rebates).

So, a bit upset that I was too prompt about getting the rebates in, I scheduled an appointment with a genius. When I spoke to him, he just went to the back and got the manager. The manager said instead fixing the screen, he'd liked to give me a new macbook and instant reimbursement for the ipod and printer! (the rebates I sent in will be rejected since the mac has been returned). The new macbook I noticed has a much louder superdrive seems to be working hard every time the computer wakes up and when I open it, but that definitely beats a chip on the screen. But now it doesn't go to sleep after the battery gets low, but instead shuts off.

Posted: Sep 20, 2007

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Coconutbattery says my battery is 36% health, but it also says it's not plugged into the charger when it actually is, so I don't know how reliable this program is. It says my mac is 27 months old, i have 367 cycles on the battery... etc. And I am running Tiger.

The problem is that the power meter on the top bar will say i've got a full charge... so I run the computer (on battery) down to about 60% according to the meter, but the computer instantly shuts off. I try to reboot, and it shuts off while rebooting. It's like the battery works fine and suddenly dies. I get about 30-40 minutes use out of the battery.

Is this the battery or do I have other problems? This only happens when using the battery.

Posted: Oct 27, 2007

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I've read through the forums and it seems a lot of people are having this problem, but their batteries are bad. What are some options/solutions to this problem? I am willing to invest money wisely into the computer to keep it running smoothly for a while.

Posted: Jan 10, 2010

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Information:
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Mac OS X (10.5.6)
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Whenever my battery gets drained, my MacBook Pro turns off as if the battery was pulled out, I lose all my work when this happens.This started after I installed Snow Leopard, before, it would just go to sleep and my work is safe.

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