[Boxtaboy]

You can get by with just driving the car on the weekend and not need any battery tender. I've done that, and have also just left it sit for weeks at a time without use or battery tender, and it started up fine. My experience with that, however, is that the battery tends to only last normal time frames (eg. 4 yrs), which is ok, but since using the battery maintainer (I have the old Porsche branded one), my last battery lasted 7 years (and was still good when I replaced it just for peace of mind). One thing I did do was turn off that red LED blink that is usually set to on in the factory CDR 220 radio, however, as I see no need for it. You can turn that off in the settings on the radio, so it doesn't blink when the car is off.