ok so i've been trying to calibrate the battery on my g3 ibook as it seems to die(sleep) at around 50% as indicated by the battery level. if i were to plug it back in and wake it, it then reads 0%. i get around 4 hours or so on my battery. i've let it sit for over 18 hours and the little light on the front still fades in and out. how can i completely drain my battery so i can get somewhat of an accurate battery indicator? should i let it sit longer? i thought 5 hours would have been long enough or am i not doing this right i'm stumped right before my battery dies, should i manually put my mac to sleep?