Damn alarm killed the battery... again.

I installed a Gorilla alarm on the SD solely to appease the insurance company.

I park the bike in my garage, alarm off.

I was really busy with work come last November so the bike sat for 2 months before I got to modding time and the battery was VERY dead by then. The tender brought it back and in the weeks following, I left it unplugged for a few weeks to see if it would die again, it didn't.

Today, after changing out the brake fluid, I went to start it up and found that it didn't have the juice needed to get her going, just lump it over once or twice.

It's back on the tender.

Stupid alarms.

I leave all my bikes on a battery maintainer alarmed or not.
My GTR is now 5 years and 50,000 miles old, alarmed, immobilised and still on the original battery.
I'm not given to polishing, cleaning or maintaining my bikes other than what I have to but fitting a 'tail' to the battery and religiously plugging in the charger when I get home saves an awful lot of dicking about.

OK, after leaving the bike on the Optimate 3 and getting a green light (full charge) then letting it sit for a day, I started it while watching a volt meter;

- after sitting a day NOT on the Optimate; 12.5v (+/-... wasn't thinking of posting #'s at that time)
- after ignition switch on; 11.5v (+/-)
- starting; 9.34v
- running / charging; 13.74v

It started up fine but I don't know if it's in my head that it seemed slower than I'm used to.

Thoughts?