What kind of batteries have you been using?
Also, what electrical add ons have you installed?
You have some kind of excessive parasitic drain going on. Obviously as your batteries get drained and you recharge them, they lose capacity and will go bad. Still, something isn't quite right about your battery drain.
The V1 hardwire should be pretty simple and you would know if it stayed on all the time. The Inno looks to be a no brainer as well as it's fm modulated.
Make sure none of your lights stay on. drop a video camera into the trunk to make sure that the trunk light isn't always on, I think the glovebox has a light too but I forget how it is triggered.
For a basically stock 05, if you're driving it enough to charge the battery once in a while you should be fine. If it's still under warranty, I'd have the dealer check it out.
A Battery Tender will probably keep your battery tip top but I would fix the electrical gremlin first.
I've found that a week and a half is about borderline, about the point where the car can be hard or impossible to start. Any time my car sits for more than about five days, I connect my automatic battery charger (as Malibu Rapper previously recommended doing).
I was afraid of that being the case. The car is garaged and thus the alarm is not essential. Does it make any difference if the alarm is not armed?
Joe
I measured mine at 65 mA (.065A) so yours at 40mA is very good.
Hrant: my 91 has a 37ma parasitic draw. I keep the battery out during the winter and a smart charger on it during the driving season. You can hook up an amp meter and simply start pulling fuses to see where the draw is.
Dave
Update - though digressing a bit from the OP.
Not sure how the starter draw will show up on a dealer's print out (PGM-FI Freeze data and Data List) but they claimed the starter was ok. The parasitic loss/drain was only 27 milliamp. Battery was good showing 14 volts.
As is the case in many such situations, the dealer couldn't duplicate the problem even though the car stayed overnight for a second testing early in the morning with ambient temp in the high 40sF - ideal conditions for it to have happened. According to the dealer, all stats look good!
Our next focus may shift to the fuel map/injectors in case there is a minor leak since this tends to happen after the car has been parked for a few days - this could be the variable. I do have CTSC - autorotor with OEM injectors. The print out had quite a few other stats like map sensor, st fuel trim B1/B2 that I don't know what they all mean or should be! Faxed it to Shad to see if he can decipher and diagnose.