Lose power when remove AC but battery shows partial charge?

When i unplug my PB G4 it loses power and immediatly shuts off. However when it is on, it shows that the battery is 67% full. Is this a battery issue or something bigger.
Some other things i noticed also is that when in sleep mode i can umplug it without it shutting down. It only shuts down when i open it up. Also the battery seems never to charge. It slowly over time is going down. It started at 90+ percent and a month later is is at 67%. Also it never seems to be able to calculate how long the battery will last, it only shows the %.
Powerbook G4 Mac OS X (10.3)

Hi @xdellman,
Thank you for your query and realize how frustrating this is.
I gathered from your post you have tried most of the troubleshooting steps to no avail.
If you check the adapter do you notice any damaged or bent pins as this can cause charging issues?
Here are two links that may also assist you.
HP ENVY and Pavilion Notebook PCs - Battery Does Not Charge
HP Notebook PCs - Testing and Calibrating the Battery (Windows 8)
If this has not helped please contact HP support for assistance.
Please call our technical support at 800 474 6836. If you live outside the US/Canada Region, please click the link below to get a support number for your region.
World Wide Phone Support
Please let me know the results.
Best of Luck!
Sparkles1
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping!

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Seeking help on followings:-
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Battery Information:
Model Information:
Serial Number:    W0038U4FEE1LA
Manufacturer:    SMP
Device name:    bq20z451
Pack Lot Code:    0000
PCB Lot Code:    0000
Firmware Version:    0201
Hardware Revision:    000a
Cell Revision:    0165
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Charging:    No
Full charge capacity (mAh):    4471
Health Information:
Cycle count:    260
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Amperage (mA):    -2
Voltage (mV):    11031
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System Sleep Timer (Minutes):    10
Disk Sleep Timer (Minutes):    10
Display Sleep Timer (Minutes):    10
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Wake On Clamshell Open:    Yes
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Disk Sleep Timer (Minutes):    10
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ID:    0x0000
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Revision:    0x0000
Family:    0x0000
Serial Number:    0x00000000
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Hi sanjoyapple,
Welcome to the Apple Support Communities!
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Wake On LAN: Yes
Display Sleep Uses Dim: Yes
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iFixit
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Hi @xdellman,
Thank you for your query and realize how frustrating this is.
I gathered from your post you have tried most of the troubleshooting steps to no avail.
If you check the adapter do you notice any damaged or bent pins as this can cause charging issues?
Here are two links that may also assist you.
HP ENVY and Pavilion Notebook PCs - Battery Does Not Charge
HP Notebook PCs - Testing and Calibrating the Battery (Windows 8)
If this has not helped please contact HP support for assistance.
Please call our technical support at 800 474 6836. If you live outside the US/Canada Region, please click the link below to get a support number for your region.
World Wide Phone Support
Please let me know the results.
Best of Luck!
Sparkles1
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping!

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