iMac 20' Intel Core 2 duo 2.16GHz, 4GB DDR2-667 SDRAM, Mac OS X 10.5.1 "Leopard"
Hackintosh Q6600 4GB DDR2-667 SDRAM, 9800GT, Mac OS X 10.5.6 "Leopard" (EFI-X)
Macbook 13' Intel Core 2 duo 2.2GHz, 4GB DDR2-667 SDRAM, Mac OS X 10.5.6 "Leopard"
iPhone 2G (8GB) 2.2 (1.1.2 OTB) Week 48 J'B'ken + Activated + Unlocked
from personal experience i would suggest charging it and using till it needs another charge. im on my third battery (all replaced by apple even thogh last battery replacement was out of warrenty) and the last battery i had heated up and expanded so much it cause the trackpad clicking to not work! guy in the store said it was due to the plug being constantly plugged in! dunno how much truth in that but im very careful now cos the batteries cost a small fortune!