I haven't seen and battery discharge, but I ride everyday, keep'em electrons flowing back and forth.

An Update for the review: When I go inside the mall , I kept the two way range for about 160 yards and all of a suddent the range was lost, then I turned around to go back towards the bike and it took me about a minute to regain the range status info. I was wondering what was happening, since I'd think I should get a lot sooner after going back. I called scorpio e-mailed scoropio ( great customer / tech support both on the phone n' e-mail) and I was told that the alarm sorta pings the remote about once every minute, to check if its still in a range. This is what I plan on doing next. After I loose the range, go back lets say 20 yrds back and see if the range in restored withing the minute. Quite honestly, that time I skiped on waiting for the range to come back on, I ran towards it. It was safe and sound,(lol) just the way I left it.

 

I just installed one onmy CBR1000RR, I have to agree with philnyc. I haven't had any problems with. I think a decent alarm and chain/lock are good deterents for theft. If anyones interested check ebay and craigslist. I searched craigslist for motorcycle parts and found a guy parting out with a bunch of harley parts. He just so happend to have an alarm box in one of the photos of parts. Long story short, I got the I-500 with battery backup and perimeter sensor for $220 and it was new in the box. Everything was still in the factory sealed plastic.