It your battery is being drained like that, you will need a new one before long as storage batteries are not intended to provide light current for a long time, they are designed for HEAVY current for a SHORT time. So get this fixed NOW, and use the battery tender until you DO get it fixed.

My car sits for as long as three weeks at a time and it spins over nicely. The maximum current you should see is .050 amp.

Once you connect the ammeter, close doors and have the key removed from the ignition. You will see up to .180 amp and over the course of maybe a minute or 90 seconds, it should settle at around .040 to .055 amp. If it is higher, start pulling fuses and see where it's going. If all fuses are pulled and you still have flow, it can be leaky diodes in the alternator (remove the heavy B+ cable from the alternator). I also have heard the ABS/Traction control module has caused this on rare occasions.

If there is an aftermarket sound system in the car, look at that first. Most "professional" sound system installation places employ installers with all the technical expertise and experience of a joint-puffing high school kid. It is common for them to reverse the battery and accessory power connections and this leads to excessive current consumption when "off".