My PowerBook battery is pretty bad and runs for just about 2 hours. CoconutBattery says the max. capacity left is only 2509 mAh (57%) after 321 cycles. New batteries have 4400 mAh.
This is not normal, right? Will Apple replace the battery for free? The PowerBook is just a year old now, and I have the AppleCare 3-yr protection plan.
Does anyone have similar experiences and got the battery replaced? What's the typical mAh after a year?
Thanks! Markus
P.S.: I did a PMU reset, but it didn't help.
$ ioreg -w0 -l | grep Capacity | | | "IOBatteryInfo" = ({"Capacity"=2509,"Amperage"=18446744073709549624,"CycleCount"=321,"Current"=126,"Voltage"=10658,"Flags"=20,"AbsoluteMaxCapacity"=4400})
In article 4dsjflF15lmuaU1@redacted.invalid, Markus Dehmann markus.dehmann@redacted.invalid wrote:
My PowerBook battery is pretty bad and runs for just about 2 hours. CoconutBattery says the max. capacity left is only 2509 mAh (57%) after 321 cycles. New batteries have 4400 mAh.
This is not normal, right? Will Apple replace the battery for free? The PowerBook is just a year old now, and I have the AppleCare 3-yr protection plan.
Does anyone have similar experiences and got the battery replaced? What's the typical mAh after a year?
Thanks! Markus
P.S.: I did a PMU reset, but it didn't help.
The microprocessor on the battery can be re-calibrated by allowing the PowerBook to run until the depleted battery shuts it down and then charging it fully.
In article 4dsjflF15lmuaU1@redacted.invalid, Markus Dehmann markus.dehmann@redacted.invalid wrote:
My PowerBook battery is pretty bad and runs for just about 2 hours. CoconutBattery says the max. capacity left is only 2509 mAh (57%) after 321 cycles. New batteries have 4400 mAh.
This is not normal, right? Will Apple replace the battery for free? The PowerBook is just a year old now, and I have the AppleCare 3-yr protection plan.
Apple will not replace it. The Applecare agreement specifically excludes batteries. (I tried but if it's only a year old, they might)
fyi, mine is at 1951 mAh (44%) after 33 months and 685 load cycles and runs for less than 1.5 hours. I'll get a new one soon.
If you cycle the battery, you can usually get some mAh's back.
m-m
Actually there is an upside to the battery losing it's capacity:
It takes much less time to charge completely :)
(that's like the upside to high gas prices is it takes less time to put $40.00 in)
m-m
Tom Stiller wrote:
In article 4dsjflF15lmuaU1@redacted.invalid, Markus Dehmann markus.dehmann@redacted.invalid wrote:
My PowerBook battery is pretty bad and runs for just about 2 hours. CoconutBattery says the max. capacity left is only 2509 mAh (57%) after 321 cycles. New batteries have 4400 mAh.
This is not normal, right? Will Apple replace the battery for free? The PowerBook is just a year old now, and I have the AppleCare 3-yr protection plan.
Does anyone have similar experiences and got the battery replaced? What's the typical mAh after a year?
Thanks! Markus
P.S.: I did a PMU reset, but it didn't help.
The microprocessor on the battery can be re-calibrated by allowing the PowerBook to run until the depleted battery shuts it down and then charging it fully.
Thanks, that helped a bit. After recalibrating the battery has now 3021 mAh (68%).
Markus