Battery power for ibook g4

so as many of you ibook users know, all batteries die eventually. i have an early 2004 ibook and i get about 40 minutes of battery power. i am going to purchase a new battery from apple. i would like to know how i can get the
MOST POSSIBLE LIFE out of my battery so i dont have to change it every year and a half. i know its not good to leave on the charger, so should i drain it completely before i charge it again? any suggestions would be great! thankyou
-danny
iBook G4 1.07 GHz PowerPC   Mac OS X (10.4.6)   768 MB of RAM ipod 5g 30 gig

Hi Danny,
You may want to look at the following (they will help you achieve your goal)...
Knowledge Base Document #86284 about Calibrating your computer's battery for best performance
Knowledge Base Document #500666 has Tips for maximizing your PowerBook and iBook battery charge
Lithium-ion Batteries
About Notebook Batteries
Jon
Mac Mini 1.42Ghz, iPod (All), Airport (Graphite & Express), G4 1.33Ghz iBook, G4 iMac 1Ghz, G3 500Mhz, iBook iMac 233Mhz, eMate, Power Mac 5400 LC, PowerBook 540c, Macintosh 128K, Apple //e, Apple //, and some more...  Mac OS X (10.4.5) Moto Razr, iLife '06, SmartDisk 160Gb, Apple BT Mouse, Sight..

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