Well weather here has been great so I was doing some cleaning up that I did not get to with building my son's house. I was sweeping out the garage and noticed some water about where the overflow tube is for the wiper fluid and smelled it. Boy I was surprised -- battery fluid acid. The car had a battery tender on it since December 2. I removed battery and cleaned up. Good news no real damage but still need to wash with baking soda in the AM. Thanks to 180 it had a drain on the front of the battery which was full. It is the orginial Varta battery in a 2007. I am going to put in a new battery. The battery tender was a good one but it may have gone south. I'll call them in the AM too. Just thought I'd pass this on so others will watch for same thing. Battery tender was a new from Wal-Mart about $40.