How do I find Series number to reset PMU?

Question

How do I know what series is my powerbook? I'm trying to follow directions on this page. Not sure how to figure out the series number for my laptop. Thanks
http://support.apple.com/kb/HT1781?viewlocale=en_US
powerbook g4 1.5
10.5.8 2GB

Answer 1

Also, one thing I noticed it that it actually charged while the lid is closed.
Here is my system profiler information on Power (currently plugged in and says Battery is not charging):
Battery Information:
Charge Information:
Charge remaining (mAh): 1064
Charging: No
Full charge capacity (mAh): 3209
Health Information:
Cycle count: 279
Condition: Good
Battery Installed: Yes
Amperage (mA): 0
Voltage (mV): 11101
System Power Settings:
AC Power:
System Sleep Timer (Minutes): 10
Disk Sleep Timer (Minutes): 10
Display Sleep Timer (Minutes): 10
Dynamic Power Step: Yes
Reduce Processor Speed: No
Automatic Restart On Power Loss: No
Wake On AC Change: No
Wake On Clamshell Open: Yes
Wake On LAN: Yes
Wake On Modem Ring: Yes
Display Sleep Uses Dim: Yes
Battery Power:
System Sleep Timer (Minutes): 10
Disk Sleep Timer (Minutes): 10
Display Sleep Timer (Minutes): 2
Dynamic Power Step: Yes
Reduce Processor Speed: No
Automatic Restart On Power Loss: No
Wake On AC Change: No
Wake On Clamshell Open: Yes
Wake On Modem Ring: No
Display Sleep Uses Dim: Yes
Reduce Brightness: Yes
Hardware Configuration:
Clamshell Closed: No
UPS Installed: No
AC Charger Information:
AC Charger (Watts): 45
Connected: Yes
Charging: No