IBook shuts down after unplugging power adaper

Hello there...
My iBook G4 doesn't last for more than 10 minutes after I unplug the power adapter. I've checked some other posts and it looks like you need the information below before going any further. Any help on what I should do to remedy this problem?
Battery Information:
Battery Installed: Yes
First low level warning: No
Full Charge Capacity (mAh): 1209
Remaining Capacity (mAh): 1207
Amperage (mA): 0
Voltage (mV): 16593
Cycle Count: 250
Thanks,
Hagen

Hey Hagen,
I've got a brand new iBook 12" battery here in front of me. Just got it in the battery exchange program.
It was fully charged and I've been running it on battery for a bout 15 minutes.
Battery info:
Charge Remaining (mAh) 4136
Full charge capacity (mAh) 4400
Cycle count: 1
Condition: good
Amperage (mA): -1007
Voltage (mV): 11956
So that info that you gave us is w/ the iBook plugged in? The above was with it running on battery.
When this one is plugged in info changes to:
Amperage (mA): 1748
Voltage (mV): 12378
So you're battery seems really weak. The cycle count is pretty high and the capacity seems to be about 1/4 of new.
But run it on battery and give us that info again.
Li-Ion battery have an expected lifetime of 3-4 years whether you use them or not. Which surprised me.
Richard

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