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Use ioreg command to get battery cycle count
Authored by: ahbe on Feb 17, '05 10:29:16PM
Hmm..... When I run this script, all is well accept for the capactiy. It shows:

Battery: battery installed, above warning level
Charger: charger connected, not charging
UPS: UPS not installed
System: clamshell is closed, clamshell was closed on wake up
Voltage: 12.534V
Current: 0.000A
Charge: 2.778Ah of 2.923Ah (95.0%)
Capacity: 2.923Ah of 4.200Ah (69.6%)
Cycles: 108

Only 69.6% capacity even though I'm effectivly fully charged? I thought I had noticed a decrease in battery time. This first gen 12" PB is starting to show her age...

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Use ioreg command to get battery cycle count
Authored by: ahbe on Feb 17, '05 10:47:05PM

OK, I'll reply to my own post. So I've been running my PB for a while off the battery now, and I'm down to 74% charge, however the capacaty has stayed constant at 69.6%. So what gives? Am I understanding this wrong? Is there a way to fix this? Will a calibration perhaps get me back up to near 100% again? Thanx in advance.



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Use ioreg command to get battery cycle count
Authored by: Anonymous on Feb 18, '05 02:31:38PM

Capacity isn't charge. Capacity is how much your battery-when-full compares to a brand new battery. Note that when you were at 95%, your capacity was being compared at 2.923Ah against a brand new battery's charge of 4.200Ah. And, no, most likely a calibration will not get you up near 100%. Although there are things you can Google for and look on the site here for with regards to trying to wring more life out of your battery, the more recharging cycles you go through, the more you lose capacity, until you eventually have to purchase a replacement battery.



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