Parasidic drain on battery...

Not to beat a dead horse, but is there any benefit to not leaving the keys in the ignition if you're not going to drive it for a few days? I just let the old bitch sit up for a few days, and she rewarded me with two dead batteries. Does the key in keep certain systems powered up in standby? A few days without driving, and with relatively new batteries, shouldn't cause them to drain down that quickly I would assume. Battery charger got me back to 100% on both.

Any insight would be appreciated.

Bill.

Parasidic drain on battery...