did you post this in the NC part of this board so we can help look for your bike? Scorpion wont drain your battery to death, it even tells you when your battery is low. I have the 500 se. I dont know if the version without the pager will tell you if ur battery is low. Also after 15 days or so certain parts of the alarm turn off to save battery life.
Yup, I have a Scorpio. Well worth the money, IMO. I'm finding something new about this alarm every day since I've owned/installed it. However, don't just rely on an alarm to deter theives. Get a lock, audible disk lock, kill switch, etc. The more stuff you can use to protect it, the better. Get it in a garage/shed too.