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PowerBook shuts off while using battery power
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Senior User
Join Date: Jan 2003
Location: Daytona Beach, Florida
Status:
Offline
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Hey everyone,
I have a new 15" 1.25 and have noticed lately that after using it for about an hour on battery power, it will simply shuts itself off without any warning. The battery still has plenty power left and if I remove it for a second and reinstall it, then it boots right up fine, like nothing ever happened. I have all the current updates including the battery upgrade and running 10.3.2.
Anyone else noticing this happening or have any ideas?
Thanx!
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Senior User
Join Date: Nov 2002
Status:
Offline
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Did you try to reset the PMU?
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Happily using a Mac since '89
MacPortable: 16Mhz 1meg/40meg System 6.0.8 - 16lbs Yeah baby!
Powerbook 17" 1.33Ghz 2GB/100GB 8x Superdrive
Powerbook 12" 867Mhz 1.125GB/80GB 2xDVD-R RPC1
MacbookPro 17" 2.33Ghz
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Dedicated MacNNer
Join Date: Oct 2003
Location: 22 15N, 114 10E
Status:
Offline
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Might be a stupid idea, how about re-sit the battery?
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15"MBP/C2D2.4GHz/4GB RAM/320GB HD
15"MBP/C2D2.16GHz/3GB RAM/250GB HD
12"PB/1GHz/768MB/60GB/SuperDrive/AE
iPhone 8GB/iPod video 30GB
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Dedicated MacNNer
Join Date: Sep 2000
Location: Wilsonville, OR, USA
Status:
Offline
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Sounds like intermittent contact between battery and PowerBook. See if the battery fits securely or is wobbly. Could be you need a replacement battery or the PowerBook corrected.
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Mac Elite
Join Date: Jan 2002
Location: California
Status:
Offline
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Originally posted by TerryJ:
Hey everyone,
I have a new 15" 1.25 and have noticed lately that after using it for about an hour on battery power, it will simply shuts itself off without any warning. The battery still has plenty power left and if I remove it for a second and reinstall it, then it boots right up fine, like nothing ever happened. I have all the current updates including the battery upgrade and running 10.3.2.
Anyone else noticing this happening or have any ideas?
Thanx!
Sounds like PMU or a bad battery, or you might not have properly "conditioned" the battery on its first charge.
To reset the PMU (power management unit):
http://docs.info.apple.com/article.html?artnum=14449
Good luck!
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MacBook Pro C2D 17
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Forum Regular
Join Date: May 2003
Status:
Offline
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This happened to mine as well, and this problem is not too rare. If you look on the Apple Discussion boards, many people experience similar problems. What I did, which seemed to help, was run a full extended hardware test that took about 40 minutes. I also switched to Automatic power management, as I heard that custom settings can cause this as well.
For some reason, it has not happened since. Good luck!
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