So my battery diedon me and I removed it from the car for three days. Upon installing a new battery today, to my surprise my radio presets were still there. This is after three days of no battery in the car. It's a nice surprise, but any ideas why the presets were not cleared after Battery was removed?

 

You could change your middle name to "Lucky" or there's the possibility that you have a newer model than mine which has the ability to save the presets!
Gary

 

I thought they were all like this? The radio has the ability to save the memory independent of the battery, similarly the odometer can store your mileage forever.