Don't worry about your battery drained totally since the script is based on the phones own cutoff at 3.3V and your battery should cut off when it goes under 3V (danger level is 2.2V), since the script is based on the 3.3V = 0% you will probably not see 0% since the phone will go into shutdown mode.

side note on the minimum battery voltage, i was reviving an old laptop battery the other day and 1 of the 4 cells (14.8V) had a voltage of 2.1V and i was sure that it was dead but it charged up totally and is working so far.
This is just to say don't worry about the phone auto shutting off, since it does it within the limits of the battery, and before you ask, yes the battery is drained at this point discharging to 2.2V will yield max 5-10ma more from a normal 1320mAh battery.

And thank you very much miskooldfield for the nice feedback, i do what i can to make things close to perfect, this script is the result of 6+ hours of:
Discharging battery in intervals
Putting raw data in graph and Qbasic
adjusting and calculating in Qbasic to get the numbers to line up
getting things to work in UNIX terminal and QBW (also thanks to No!No!No!Yes!)

The script will be probably get updated to V2.0 when i get my own home built computer controlled battery charger discharger completed. This means my OLD compaq 486 laptop can get some action again